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Showing 161 - 180 of 427 results

Quarry By-Product Fines for Otta Seal Surfacing of Local Roads

Mahala, Neeta

;

Kong, Taeyun

2026-08-01 | PDF

This report evaluates through comprehensive laboratory testing the potential of utilizing quarry by-products (QBs) in Otta seal applications as a sustainable and economical alternative to conventional aggregates. An asphalt surface treatment used on low-volume roads, Otta seal consists of a relatively thick application of asphalt binder, covered wi ...

08/17/2026

Title : Quarry By-Product Fines for Otta Seal Surfacing of Local Roads Creator(s) : Mahala, Neeta;Kong, Taeyun;Vyas, Abhilash;Wang, Yudi;Tutumluer, Erol;Hajj, Ramez;Ceylan, Halil; Corporate Creator(s) : Illinois Center for Transportation Corporate Contributor(s) : Illinois Department of Transportation. Bureau of Materials;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-08-01 Report Number : FHWA-ICT-26-011;ICT-26-013;UILU-2026-2013; URL : https://rosap.ntl.bts.gov/view/dot/92987
Mahala, Neeta et al. (2026). Quarry By-Product Fines for Otta Seal Surfacing of Local Roads.

Mahala, Neeta et al. "Quarry By-Product Fines for Otta Seal Surfacing of Local Roads" (2026)

Mahala, Neeta et al. "Quarry By-Product Fines for Otta Seal Surfacing of Local Roads" , 2026
Export RIS Citation Information. TY - Tech Report AU - Mahala, Neeta AU - Kong, Taeyun AU - Vyas, Abhilash AU - Wang, Yudi AU - Tutumluer, Erol AU - Hajj, Ramez AU - Ceylan, Halil A2 - Illinois Center for Transportation A3 - Illinois Department of Transportation. Bureau of Materials A3 - United States. Department of Transportation. Federal Highway Administration AB - This report evaluates through comprehensive laboratory testing the potential of utilizing quarry by-products (QBs) in Otta seal applications as a sustainable and economical alternative to conventional aggregates. An asphalt surface treatment used on low-volume roads, Otta seal consists of a relatively thick application of asphalt binder, covered with a graded aggregate layer that allows the use of locally available and marginal-quality materials. Commonly used chip seal design methods were modified to develop a rational design approach for Otta seal, as the conventional Otta seal design procedure is largely empirical. Material characterization was conducted to determine aggregate gradation, physical properties, and emulsion characteristics required for Otta seal design. A double-layer Otta seal configuration was selected based on laboratory optimization involving testing of various configurations and incorporating QBs. The effect of curing temperature and duration on performance was also investigated through weight-loss monitoring and post-curing sweep testing. The performance of laboratory-optimized, QB-based Otta seals was then evaluated and compared with typical Otta seal aggregate through multiple laboratory tests. Performance assessment included sweep testing to evaluate aggregate retention, a modified Hamburg wheel-tracking (HWT) test to evaluate aggregate retention under simulated braking conditions, and close-range photogrammetry to quantify surface texture. The QB-based Otta seal specimens showed performance trends comparable to those constructed with typical Otta seal aggregate. The best-performing design method was selected, and QB-based specimens were further evaluated for susceptibility to bleeding under repeated wheel passes using modified HWT, friction characteristics using a dynamic friction tester, and changes incomposite modulus using a box-test setup with lightweight deflectometer testing. Results indicated that QB-based Otta seal provides adequate resistance to bleeding and sufficient friction for safe traffic movement, demonstrating strong potential as a sustainable and cost-effective pavement-preservation alternative for low-volume roads. AN - dot:92987 ET - Final Report: 8/16/24-8/15/26 KW - Quarries KW - Aggregates KW - Asphalt emulsions KW - Local transportation KW - Cost effectiveness KW - Laboratory tests KW - Pavement maintenance KW - Low volume roads KW - Performance measurement KW - Quarry By-Product KW - Underutilized Quarry Material KW - Otta Seal KW - Surface Treatment KW - Local Roads LA - English PB - Illinois. Department of Transportation PY - 2026-08-01 SN - FHWA-ICT-26-011 TI - Quarry By-Product Fines for Otta Seal Surfacing of Local Roads M3 - Tech Report N1 - United States N1 - R27-268 UR - https://rosap.ntl.bts.gov/view/dot/92987 ER - DB - ROSA P
Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers

Alexander, Christopher L. ;

Sagüés, Alberto A.

2026-07-01 | PDF

The University of South Florida's Corrosion Research Laboratory previously developed a tendon imaging unit (TIU) capable of providing representative cross-section images of external tendons that show strand envelope position and the likelihood of grouting deficiencies. The objective of this work was to adapt the grout-based TIU for application to w ...

08/17/2026

Title : Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers Creator(s) : Alexander, Christopher L.;Sagüés, Alberto A.;Karki, Mahesh;Kandel, Laxmi; Corporate Creator(s) : University of South Florida. Department of Civil and Environmental Engineering Corporate Contributor(s) : Florida. Department of Transportation Published Date : 2026-07-01 Report Number : BED25-977-20 URL : https://rosap.ntl.bts.gov/view/dot/92986
Alexander, Christopher L. et al. (2026). Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers.

Alexander, Christopher L. et al. "Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers" (2026)

Alexander, Christopher L. et al. "Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers" , 2026
Export RIS Citation Information. TY - Tech Report AU - Alexander, Christopher L. AU - Sagüés, Alberto A. AU - Karki, Mahesh AU - Kandel, Laxmi A2 - University of South Florida. Department of Civil and Environmental Engineering A3 - Florida. Department of Transportation AB - The University of South Florida's Corrosion Research Laboratory previously developed a tendon imaging unit (TIU) capable of providing representative cross-section images of external tendons that show strand envelope position and the likelihood of grouting deficiencies. The objective of this work was to adapt the grout-based TIU for application to wax-filled external tendons. After characterization of the electrical properties of FDOT approved waxes, it became apparent that adaptation to wax-filled tendons would require sophisticated signal analysis to account for the limited difference between the dielectric constant for wax and air. An analysis approach was developed in which the magnetic signal is converted to a representative impedance signal considering a flaw-free, completely wax-filled condition. Comparison between the magnetic-signal recovered impedance and the measured impedance facilitates deficiency detection. Air void and water pocket deficiency detection with cross-section image recovery was demonstrated for a series of strand configurations and fill conditions. In a parallel thrust, an initial design for a rotation-free TIU was developed, and preliminary testing confirmed the capability of recovering strand position. This is a particularly promising advancement that with further development could result in increased ability to rapidly scan external tendons to facilitate bridge-scale testing or monitoring systems. AN - dot:92986 ET - Draft Final Report: 03/15/2024-07/31/2026 KW - Reconstruction KW - Magnets KW - Sensors KW - Mechanical impedance KW - Flexible structures KW - Bridges KW - Configuration management KW - Laboratory tests KW - Monitoring KW - Image reconstruction KW - magnetic sensor KW - convolution LA - English PB - Florida Department of Transportation PY - 2026-07-01 SN - BED25-977-20 TI - Development of a Non-Destructive Imaging Tool to Identify Deficiencies in External Tendons Containing Flexible Fillers M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92986 ER - DB - ROSA P
Report R27-R03: Developing Guidelines for Context Specific Crosswalk Design [Research Project Brief]

Raida, Afrida ;

Robartes, Erin M.

2026-08-01 | PDF

Crosswalks can be marked as either transverse or high-visibility crosswalks (HVCs). The Virginia Department of Transportation (VDOT) mandates HVCs at marked crosswalks at all unsignalized crossings, roundabouts, and pedestrian hybrid beacons, except on stop-controlled approaches, as IIM-TE-384.1 describes. At signalized intersections, marking type ...

08/17/2026

Title : Report R27-R03: Developing Guidelines for Context Specific Crosswalk Design [Research Project Brief] Creator(s) : Raida, Afrida;Robartes, Erin M.;Chen, T. Donna; Corporate Creator(s) : Virginia Transportation Research Council (VTRC) Corporate Contributor(s) : Virginia. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-08-01 URL : https://rosap.ntl.bts.gov/view/dot/92985
Raida, Afrida et al. (2026). Report R27-R03: Developing Guidelines for Context Specific Crosswalk Design [Research Project Brief].

Raida, Afrida and Robartes, Erin M. and Chen, T. Donna "Report R27-R03: Developing Guidelines for Context Specific Crosswalk Design [Research Project Brief]" (2026)

Raida, Afrida et al. "Report R27-R03: Developing Guidelines for Context Specific Crosswalk Design [Research Project Brief]" , 2026
Export RIS Citation Information. TY - Brief AU - Raida, Afrida AU - Robartes, Erin M. AU - Chen, T. Donna A2 - Virginia Transportation Research Council (VTRC) A3 - Virginia. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - Crosswalks can be marked as either transverse or high-visibility crosswalks (HVCs). The Virginia Department of Transportation (VDOT) mandates HVCs at marked crosswalks at all unsignalized crossings, roundabouts, and pedestrian hybrid beacons, except on stop-controlled approaches, as IIM-TE-384.1 describes. At signalized intersections, marking type is left to engineering judgment per IIM-TOD-400. VDOT is responsible for the routine maintenance of a large crosswalk inventory. As HVCs have higher costs than transverse crosswalks, appropriate deployment is important. This report summarizes existing research regarding the contexts in which HVCs are effective, a survey of crosswalk marking practices in Virginia localities, and a study of HVCs and transverse crosswalks on Virginia roads at signalized intersections. AN - dot:92985 ET - Research Project Brief KW - Crosswalks KW - Highway design KW - Pedestrian safety KW - Visibility LA - English PB - Virginia Transportation Research Council (VTRC) PY - 2026-08-01 TI - Report R27-R03: Developing Guidelines for Context Specific Crosswalk Design [Research Project Brief] M3 - Brief N1 - United States N1 - 124330 UR - https://rosap.ntl.bts.gov/view/dot/92985 ER - DB - ROSA P
Developing Guidelines for Context Specific Crosswalk Design

Raida, Afrida ;

Robartes, Erin M.

2026-08-01 | PDF

Crosswalks can be marked as either transverse or high-visibility crosswalks (HVCs). The Virginia Department of Transportation (VDOT) mandates HVCs at marked crosswalks at all unsignalized crossings, roundabouts, and pedestrian hybrid beacons, except on stop-controlled approaches, as IIM-TE-384.1 describes. At signalized intersections, marking type ...

08/17/2026

Title : Developing Guidelines for Context Specific Crosswalk Design Creator(s) : Raida, Afrida;Robartes, Erin M.;Chen, T. Donna; Corporate Creator(s) : Virginia Transportation Research Council (VTRC) Corporate Contributor(s) : Virginia. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-08-01 Report Number : FHWA/VTRC 27-R03 URL : https://rosap.ntl.bts.gov/view/dot/92984
Raida, Afrida et al. (2026). Developing Guidelines for Context Specific Crosswalk Design.

Raida, Afrida and Robartes, Erin M. and Chen, T. Donna "Developing Guidelines for Context Specific Crosswalk Design" (2026)

Raida, Afrida et al. "Developing Guidelines for Context Specific Crosswalk Design" , 2026
Export RIS Citation Information. TY - Tech Report AU - Raida, Afrida AU - Robartes, Erin M. AU - Chen, T. Donna A2 - Virginia Transportation Research Council (VTRC) A3 - Virginia. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - Crosswalks can be marked as either transverse or high-visibility crosswalks (HVCs). The Virginia Department of Transportation (VDOT) mandates HVCs at marked crosswalks at all unsignalized crossings, roundabouts, and pedestrian hybrid beacons, except on stop-controlled approaches, as IIM-TE-384.1 describes. At signalized intersections, marking type is left to engineering judgment per IIM-TOD-400. VDOT is responsible for the routine maintenance of a large crosswalk inventory. As HVCs have higher costs than transverse crosswalks, appropriate deployment is important. This report summarizes existing research regarding the contexts in which HVCs are effective, a survey of crosswalk marking practices in Virginia localities, and a study of HVCs and transverse crosswalks on Virginia roads at signalized intersections. AN - dot:92984 ET - Final Report KW - Crosswalks KW - Highway design KW - Pedestrian safety KW - Visibility LA - English PB - Virginia Transportation Research Council (VTRC) PY - 2026-08-01 SN - FHWA/VTRC 27-R03 TI - Developing Guidelines for Context Specific Crosswalk Design M3 - Tech Report N1 - United States N1 - 124330 UR - https://rosap.ntl.bts.gov/view/dot/92984 ER - DB - ROSA P
Automated Battery Management Systems for Electric Vehicles

Na, Woonki ;

Xie, Yuanyuan

2026-08-01 | PDF

Electric vehicle (EV) safety, efficiency, and lifetime are strongly influenced by how well battery cells are managed, and as EV adoption accelerates, improving battery performance has become critical to vehicle reliability, cost, and public trust. This report conducts a field study on the core technologies and challenges in Battery Management Syste ...

08/17/2026

Title : Automated Battery Management Systems for Electric Vehicles Creator(s) : Na, Woonki;Xie, Yuanyuan; Corporate Creator(s) : San Jose State University. College of Business. Mineta Transportation Institute Corporate Contributor(s) : California State University, Fresno. Fresno State Transportation Institute (FSTI);State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration;Fresno County Transportation Authority;United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2026-08-01 Report Number : 26-20 DOI : https://doi.org/10.31979/mti.2026.2534
Na, Woonki and Xie, Yuanyuan (2026). Automated Battery Management Systems for Electric Vehicles. https://doi.org/10.31979/mti.2026.2534

Na, Woonki and Xie, Yuanyuan "Automated Battery Management Systems for Electric Vehicles" (2026), https://doi.org/10.31979/mti.2026.2534

Na, Woonki and Xie, Yuanyuan "Automated Battery Management Systems for Electric Vehicles" , 2026, https://doi.org/10.31979/mti.2026.2534
Export RIS Citation Information. TY - Tech Report AU - Na, Woonki AU - Xie, Yuanyuan A2 - San Jose State University. College of Business. Mineta Transportation Institute A3 - California State University, Fresno. Fresno State Transportation Institute (FSTI) A3 - State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration A3 - Fresno County Transportation Authority A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - Electric vehicle (EV) safety, efficiency, and lifetime are strongly influenced by how well battery cells are managed, and as EV adoption accelerates, improving battery performance has become critical to vehicle reliability, cost, and public trust. This report conducts a field study on the core technologies and challenges in Battery Management Systems (BMS), focusing on the classification of BMS circuit topologies (design/structures) and systematically reviewing different topologies of active cell balancing circuits (systems that move energy from stronger battery cells to weaker ones). The study provides a detailed analysis of the working principles, advantages, and disadvantages of various active balancing circuit topologies. Additionally, it elaborates on the key algorithms underpinning battery balancing. The report also examines the main challenges in designing these systems, including balancing efficiency, cost, reliability, and the ability to scale. It also highlights the difficulty of accurately understanding battery conditions and making real-time decisions as operating conditions change. The study also summarizes and reviews major breakthroughs in balancing algorithms within the field. By conducting comprehensive research on circuit topologies and core algorithms, this report informs the design and performance optimization of BMS, particularly active balancing systems. Addressing these challenges is essential to improving EV safety, reducing costs, and supporting the broader adoption of electric vehicles. AN - dot:92983 DO - https://doi.org/10.31979/mti.2026.2534 KW - Electric vehicles KW - Storage batteries KW - Fuel cell vehicles KW - Performance KW - Reliability KW - Cost effectiveness KW - Infrastructure KW - Artificial intelligence KW - Literature reviews KW - Battery management system KW - active KW - cell balancing LA - English PB - San Jose State University. College of Business. Mineta Transportation Institute PY - 2026-08-01 SN - 26-20 TI - Automated Battery Management Systems for Electric Vehicles M3 - Tech Report N1 - United States N1 - SB1-SJAUX_2023-26 UR - https://rosap.ntl.bts.gov/view/dot/92983 ER - DB - ROSA P
Automated Battery Management Systems for Electric Vehicles [Research Brief]

Na, Woonki ;

Xie, Yuanyuan

2026-07-01 | PDF

Electric vehicles (EVs) are at the heart of the global transition to sustainable transportation. Their performance and safety depend critically on large lithium-ion battery packs-yet these packs face a persistent engineering challenge: cell imbalance. When individual cells charge and discharge at different rates due to manufacturing variability, ag ...

08/17/2026

Title : Automated Battery Management Systems for Electric Vehicles [Research Brief] Creator(s) : Na, Woonki;Xie, Yuanyuan; Corporate Creator(s) : San Jose State University. College of Business. Mineta Transportation Institute Corporate Contributor(s) : California State University, Fresno. Fresno State Transportation Institute (FSTI);State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration;Fresno County Transportation Authority;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology;United States. Department of Transportation. University Transportation Centers (UTC) Program; Published Date : 2026-07-01 Report Number : 2534 URL : https://rosap.ntl.bts.gov/view/dot/92982
Na, Woonki and Xie, Yuanyuan (2026). Automated Battery Management Systems for Electric Vehicles [Research Brief].

Na, Woonki and Xie, Yuanyuan "Automated Battery Management Systems for Electric Vehicles [Research Brief]" (2026)

Na, Woonki and Xie, Yuanyuan "Automated Battery Management Systems for Electric Vehicles [Research Brief]" , 2026
Export RIS Citation Information. TY - Brief AU - Na, Woonki AU - Xie, Yuanyuan A2 - San Jose State University. College of Business. Mineta Transportation Institute A3 - California State University, Fresno. Fresno State Transportation Institute (FSTI) A3 - State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration A3 - Fresno County Transportation Authority A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program AB - Electric vehicles (EVs) are at the heart of the global transition to sustainable transportation. Their performance and safety depend critically on large lithium-ion battery packs-yet these packs face a persistent engineering challenge: cell imbalance. When individual cells charge and discharge at different rates due to manufacturing variability, aging, and uneven heat distribution, the entire pack becomes limited by its weakest cell. Left unaddressed, imbalance accelerates battery degradation, reduces driving range, and can trigger dangerous overheating. This research tackled the question: which active cell-balancing architecture delivers the best combination of speed, efficiency, and safety for next-generation electric vehicles? AN - dot:92982 ET - Research Brief KW - Electric vehicles KW - Storage batteries KW - Fuel cell vehicles KW - Performance KW - Reliability KW - Cost effectiveness KW - Literature reviews KW - Artificial intelligence KW - Infrastructure KW - Battery management system KW - active cell balancing LA - English PB - San Jose State University. College of Business. Mineta Transportation Institute PY - 2026-07-01 SN - 2534 TI - Automated Battery Management Systems for Electric Vehicles [Research Brief] M3 - Brief N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92982 ER - DB - ROSA P
Stall/Spin Aerodynamic Data Project

Snyder, Melvin H.

1989-09-01 | PDF

The purpose of this project was to develop a bank of aerodynamic data including high angle-of-attack aerodynamic characteristics of 2-D airfoils and characteristics of 3-D wings and of complete airplanes beyond the stall. To fill gaps in available literature, flow visualization studies and wind tunnel tests were to be conducted. Also, a flow visual ...

08/17/2026

Title : Stall/Spin Aerodynamic Data Project Creator(s) : Snyder, Melvin H. Corporate Creator(s) : Wichita State University Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-09-01 Report Number : DOT/FAA/CT-88/29 URL : https://rosap.ntl.bts.gov/view/dot/92981
Snyder, Melvin H. (1989). Stall/Spin Aerodynamic Data Project.

Snyder, Melvin H. "Stall/Spin Aerodynamic Data Project" (1989)

Snyder, Melvin H. "Stall/Spin Aerodynamic Data Project" , 1989
Export RIS Citation Information. TY - Tech Report AU - Snyder, Melvin H. A2 - Wichita State University A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - The purpose of this project was to develop a bank of aerodynamic data including high angle-of-attack aerodynamic characteristics of 2-D airfoils and characteristics of 3-D wings and of complete airplanes beyond the stall. To fill gaps in available literature, flow visualization studies and wind tunnel tests were to be conducted. Also, a flow visualization laboratory was to be established to study wing stall and anti-stall devices. The flow visualization laboratory is in operation. A bank of 2-D high angle-of attack airfoil data has been compiled. The 3-D data have been acquired; water tunnel and wind tunnel reflection plane tests have been performed and continue. Data obtained indicated that movable leading-edge control surfaces show promise toward the goal of controlled flight beyond the stall. AN - dot:92981 ET - Final Report KW - Aerodynamics KW - Airplanes KW - Design KW - Rotation KW - Stall LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-09-01 SN - DOT/FAA/CT-88/29 TI - Stall/Spin Aerodynamic Data Project M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92981 ER - DB - ROSA P
Stall/Spin/Flight Simulation

Nagati, M. G.

1989-09-01 | PDF

This report summarizes the work performed for stall/spin resistant design aids for aircraft. Two major areas were investigated. First, the solution of the non-linear equations of motion with on-line computation of the aerodynamic moments and visual display of the pilot's view and views of the aircraft. This enables evaluation of the simulator and t ...

08/17/2026

Title : Stall/Spin/Flight Simulation Creator(s) : Nagati, M. G. Corporate Creator(s) : Wichita State University Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-09-01 Report Number : DOT/FAA/CT-88/28 URL : https://rosap.ntl.bts.gov/view/dot/92980
Nagati, M. G. (1989). Stall/Spin/Flight Simulation.

Nagati, M. G. "Stall/Spin/Flight Simulation" (1989)

Nagati, M. G. "Stall/Spin/Flight Simulation" , 1989
Export RIS Citation Information. TY - Tech Report AU - Nagati, M. G. A2 - Wichita State University A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center A4 - Reed, John AB - This report summarizes the work performed for stall/spin resistant design aids for aircraft. Two major areas were investigated. First, the solution of the non-linear equations of motion with on-line computation of the aerodynamic moments and visual display of the pilot's view and views of the aircraft. This enables evaluation of the simulator and the quality of the solution by pilots and engineers. Second, a method for predicting the aerodynamics of wings near and beyond stall was developed. It serves the purpose of selecting planforms for spin resistant aircraft. This work demonstrates the viability and promise of these approaches against spin. AN - dot:92980 ET - Final Report KW - Aerodynamics KW - Airplanes KW - Design KW - Rotation KW - Stall LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-09-01 SN - DOT/FAA/CT-88/28 TI - Stall/Spin/Flight Simulation M3 - Tech Report N1 - United States N1 - DTFA03-86-C-00041 UR - https://rosap.ntl.bts.gov/view/dot/92980 ER - DB - ROSA P
Electro-Impulse De-Icing Research: Fatigue and Electromagnetic Interference Tests

Zumwalt, G. W. ;

Friedberg, R. A.

1989-03-01 | PDF

Electro-Impulse De-Icing (EIDI) has been recently developed and tested with very encouraging results. Questions remain, however, regarding the fatigue life and electromagnetic compatibility of the system.

08/17/2026

Title : Electro-Impulse De-Icing Research: Fatigue and Electromagnetic Interference Tests Creator(s) : Zumwalt, G. W.;Friedberg, R. A.;Schwartz, J. A.; Corporate Creator(s) : Wichita State University Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-03-01 Report Number : DOT/FAA/CT-88/27 URL : https://rosap.ntl.bts.gov/view/dot/92979
Zumwalt, G. W. et al. (1989). Electro-Impulse De-Icing Research: Fatigue and Electromagnetic Interference Tests.

Zumwalt, G. W. and Friedberg, R. A. and Schwartz, J. A. "Electro-Impulse De-Icing Research: Fatigue and Electromagnetic Interference Tests" (1989)

Zumwalt, G. W. et al. "Electro-Impulse De-Icing Research: Fatigue and Electromagnetic Interference Tests" , 1989
Export RIS Citation Information. TY - Tech Report AU - Zumwalt, G. W. AU - Friedberg, R. A. AU - Schwartz, J. A. A2 - Wichita State University A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - Electro-Impulse De-Icing (EIDI) has been recently developed and tested with very encouraging results. Questions remain, however, regarding the fatigue life and electromagnetic compatibility of the system. AN - dot:92979 ET - Final Report KW - Airplanes KW - Electromagnetic interference KW - Ice prevention LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-03-01 SN - DOT/FAA/CT-88/27 TI - Electro-Impulse De-Icing Research: Fatigue and Electromagnetic Interference Tests M3 - Tech Report N1 - United States N1 - DOTFA03-86-C-00041 UR - https://rosap.ntl.bts.gov/view/dot/92979 ER - DB - ROSA P
Investigation of Transport Airplane Fuselage Fuel Tank Installations Under Crash Conditions

Wittlin, G.

1989-07-01 | PDF

Three contemporary fuel tank installation configurations investigated in this study include: (1) a comfortable tank containing a bladder and supported within a dedicated structure; (2) a double wall cylindrical strap in an auxiliary tank; and (3) bladder cells fitted in the lower fuselage. Existing crash design criteria are reviewed, as well as cur ...

08/17/2026

Title : Investigation of Transport Airplane Fuselage Fuel Tank Installations Under Crash Conditions Creator(s) : Wittlin, G. Corporate Creator(s) : Lockheed Aeronautical Systems Company Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-07-01 Report Number : DOT/FAA/CT-88/24, LR-31443 URL : https://rosap.ntl.bts.gov/view/dot/92978
Wittlin, G. (1989). Investigation of Transport Airplane Fuselage Fuel Tank Installations Under Crash Conditions.

Wittlin, G. "Investigation of Transport Airplane Fuselage Fuel Tank Installations Under Crash Conditions" (1989)

Wittlin, G. "Investigation of Transport Airplane Fuselage Fuel Tank Installations Under Crash Conditions" , 1989
Export RIS Citation Information. TY - Tech Report AU - Wittlin, G. A2 - Lockheed Aeronautical Systems Company A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - Three contemporary fuel tank installation configurations investigated in this study include: (1) a comfortable tank containing a bladder and supported within a dedicated structure; (2) a double wall cylindrical strap in an auxiliary tank; and (3) bladder cells fitted in the lower fuselage. Existing crash design criteria are reviewed, as well as current proposals which could affect fuel tank installations. Program KRASH was used to help evaluate the performance of a fuselage mounted tank when subjected to dynamic loads. A total of 21 cases were analyzed including 12 vertical impacts and 9 longitudinal pulse conditions and/or configurations. The analytical models included 120-inch sections, 300-inch segments and full airplane representations. Results in the form of floor and fuel tank accelerations, floor and fuel tank attachment loads and fuselage crush were obtained. Two test conditions are proposed to represent conditions that best meet the crash design criteria developed in a previous FAA sponsored parametric study, as well as to recognize realistic structures and tests that can be run. AN - dot:92978 ET - Final Report KW - Air transportation KW - Aircraft KW - Crash investigation KW - Dynamic loads KW - Fuel tanks KW - Installation KW - Studies LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-07-01 SN - DOT/FAA/CT-88/24, LR-31443 TI - Investigation of Transport Airplane Fuselage Fuel Tank Installations Under Crash Conditions M3 - Tech Report N1 - United States N1 - DTFA03-86-C-00005 UR - https://rosap.ntl.bts.gov/view/dot/92978 ER - DB - ROSA P
Statistics on Aircraft Gas Turbine Engine Rotor Failures That Occurred in U.S. Commercial Aviation During 1982

DeLucia, R. A. ;

Salvino, J. T.

1988-07-01 | PDF

This report presents statistics relating to gas turbine engine rotor failures which occurred during 1982 in U.S. commercial aviation service use. One hundred and sixty-one rotor failures occurred in 1982. Rotor fragments were generated in 88 of the failures and, of these, 16 were uncontained. The predominant failure involved blade fragments. Sevent ...

08/17/2026

Title : Statistics on Aircraft Gas Turbine Engine Rotor Failures That Occurred in U.S. Commercial Aviation During 1982 Creator(s) : DeLucia, R. A.;Salvino, J. T.; Corporate Creator(s) : Naval Air Propulsion Center Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-07-01 Report Number : DOT/FAA/CT-88/23 URL : https://rosap.ntl.bts.gov/view/dot/92977
DeLucia, R. A. and Salvino, J. T. (1988). Statistics on Aircraft Gas Turbine Engine Rotor Failures That Occurred in U.S. Commercial Aviation During 1982.

DeLucia, R. A. and Salvino, J. T. "Statistics on Aircraft Gas Turbine Engine Rotor Failures That Occurred in U.S. Commercial Aviation During 1982" (1988)

DeLucia, R. A. and Salvino, J. T. "Statistics on Aircraft Gas Turbine Engine Rotor Failures That Occurred in U.S. Commercial Aviation During 1982" , 1988
Export RIS Citation Information. TY - Tech Report AU - DeLucia, R. A. AU - Salvino, J. T. A2 - Naval Air Propulsion Center A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report presents statistics relating to gas turbine engine rotor failures which occurred during 1982 in U.S. commercial aviation service use. One hundred and sixty-one rotor failures occurred in 1982. Rotor fragments were generated in 88 of the failures and, of these, 16 were uncontained. The predominant failure involved blade fragments. Seventy percent of the 161 failures occurred during the takeoff and climb stages of flight. This service data analysis is prepared on a calendar year basis and published yearly. The data support flight safety analysis, proposed regulatory actions, certification standards, and cost benefit analyses. AN - dot:92977 ET - Final Report KW - Aircraft KW - Engines KW - Failure KW - Gas turbines KW - Rotor blades KW - Turbine engines LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-07-01 SN - DOT/FAA/CT-88/23 TI - Statistics on Aircraft Gas Turbine Engine Rotor Failures That Occurred in U.S. Commercial Aviation During 1982 M3 - Tech Report N1 - United States N1 - DOTiFA71NA AP98 UR - https://rosap.ntl.bts.gov/view/dot/92977 ER - DB - ROSA P
Experimental Guidelines for the Design of Turbine Rotor Fragment Containment Rings

Salvino, J. T. ;

DeLucia, R. A.

1988-07-01 | PDF

Results of experimentation to determine design guidelines for turbine rotor fragment containment rings are presented in this report. The project consisted of two tasks. Task 1 was an investigation of the containment characteristics of cloth rings. Task 2 determined the engine casing thickness required for single and triple blade containment. This e ...

08/17/2026

Title : Experimental Guidelines for the Design of Turbine Rotor Fragment Containment Rings Creator(s) : Salvino, J. T.;DeLucia, R. A.;Russo, T.; Corporate Creator(s) : Naval Air Propulsion Center Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-07-01 Report Number : DOT/FAA/CT-88/21 URL : https://rosap.ntl.bts.gov/view/dot/92976
Salvino, J. T. et al. (1988). Experimental Guidelines for the Design of Turbine Rotor Fragment Containment Rings.

Salvino, J. T. and DeLucia, R. A. and Russo, T. "Experimental Guidelines for the Design of Turbine Rotor Fragment Containment Rings" (1988)

Salvino, J. T. et al. "Experimental Guidelines for the Design of Turbine Rotor Fragment Containment Rings" , 1988
Export RIS Citation Information. TY - Tech Report AU - Salvino, J. T. AU - DeLucia, R. A. AU - Russo, T. A2 - Naval Air Propulsion Center A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - Results of experimentation to determine design guidelines for turbine rotor fragment containment rings are presented in this report. The project consisted of two tasks. Task 1 was an investigation of the containment characteristics of cloth rings. Task 2 determined the engine casing thickness required for single and triple blade containment. This effort was conducted as part of the overall Rotor Fragment Protection Program. AN - dot:92976 ET - Final Report KW - Airplanes KW - Motors KW - Turboprop engines KW - Rotors KW - Mechanical failure LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-07-01 SN - DOT/FAA/CT-88/21 TI - Experimental Guidelines for the Design of Turbine Rotor Fragment Containment Rings M3 - Tech Report N1 - United States N1 - DOT-FA71NA-AP-98 UR - https://rosap.ntl.bts.gov/view/dot/92976 ER - DB - ROSA P
Analytical Ice Shape Predictions for Flight in Natural Icing Conditions

Berkowitz, Brian M. ;

Riley, James T.

1988-12-01 | PDF

LEWICE is an analytical ice prediction code that has been evaluated extensively against icing tunnel data, but on a more limited basis against flight data. The purpose of this report is to compare ice shapes predicted by LEWICE with experimental ice shapes accreted on the NASA Lewis Icing Research Aircraft. The flight data selected for comparison i ...

08/17/2026

Title : Analytical Ice Shape Predictions for Flight in Natural Icing Conditions Creator(s) : Berkowitz, Brian M.;Riley, James T.; Corporate Creator(s) : United States. National Aeronautics and Space Administration;Sverdrup Technology, Inc; Corporate Contributor(s) : Lewis Research Center;United States. Department of Transportation. Federal Aviation Administration. Technical Center; Published Date : 1988-12-01 Report Number : NASA CR-182234 -T/FAA/CT- 88/19 URL : https://rosap.ntl.bts.gov/view/dot/92975
Berkowitz, Brian M. and Riley, James T. (1988). Analytical Ice Shape Predictions for Flight in Natural Icing Conditions.

Berkowitz, Brian M. and Riley, James T. "Analytical Ice Shape Predictions for Flight in Natural Icing Conditions" (1988)

Berkowitz, Brian M. and Riley, James T. "Analytical Ice Shape Predictions for Flight in Natural Icing Conditions" , 1988
Export RIS Citation Information. TY - Tech Report AU - Berkowitz, Brian M. AU - Riley, James T. A2 - United States. National Aeronautics and Space Administration A2 - Sverdrup Technology, Inc A3 - Lewis Research Center A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - LEWICE is an analytical ice prediction code that has been evaluated extensively against icing tunnel data, but on a more limited basis against flight data. The purpose of this report is to compare ice shapes predicted by LEWICE with experimental ice shapes accreted on the NASA Lewis Icing Research Aircraft. The flight data selected for comparison includes liquid water content recorded using a hot wire device and droplet distribution data from a laser spectrometer; the ice shape is recorded using stereo photography. The main findings are as follows: (1) An equivalent sand grain roughness correlation different from that used for LEWICE tunnel comparisons must be employed to obtain satisfactory results for flight. (2) Using this correlation and making no other changes in the code, the comparisons to ice shapes accreted in flight are in general as good as the comparisons to ice shapes accreted in the tunnel. As in the case of tunnel ice shapes, agreement is least reliable for large glaze ice shapes at high angles of attack. (3) In some cases, comparisons can be somewhat improved by utilizing the code so as to take account of the variation of parameters such as liquid water content, which may vary significantly in flight. AN - dot:92975 ET - Final Report KW - Airplanes KW - Climate KW - Ice prevention KW - Mathematical models LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-12-01 SN - NASA CR-182234 -T/FAA/CT- 88/19 TI - Analytical Ice Shape Predictions for Flight in Natural Icing Conditions M3 - Tech Report N1 - United States N1 - NAS3-24105 UR - https://rosap.ntl.bts.gov/view/dot/92975 ER - DB - ROSA P
Fiber Composite Analysis and Design: Volume II, Structures

United States. Department of Transportation. Federal Aviation Administration

1985-01-01 | PDF

Fiber composites have been developed to take advantage of unique properties found in materials in fibrous form. Many materials in the form of fine filaments exhibit strength and stiffness characteristics far greater than those of the same material in bulk form. The combination of such filaments with a suitable matrix can yield a composite with prop ...

08/17/2026

Title : Fiber Composite Analysis and Design: Volume II, Structures Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Contributor(s) : Rosen, B. Walter;Chatterjee, Sailendra;Smith, John Hart;Humpreys, E. A.;Kibler, John;Whitney, Jim; Published Date : 1985-01-01 Report Number : DOT/FAA//CT-88/18 URL : https://rosap.ntl.bts.gov/view/dot/92974
United States. Department of Transportation. Federal Aviation Administration (1985). Fiber Composite Analysis and Design: Volume II, Structures.

United States. Department of Transportation. Federal Aviation Administration "Fiber Composite Analysis and Design: Volume II, Structures" (1985)

United States. Department of Transportation. Federal Aviation Administration "Fiber Composite Analysis and Design: Volume II, Structures" , 1985
Export RIS Citation Information. TY - Tech Report A2 - United States. Department of Transportation. Federal Aviation Administration A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center A4 - Rosen, B. Walter A4 - Chatterjee, Sailendra A4 - Smith, John Hart A4 - Humpreys, E. A. A4 - Kibler, John A4 - Whitney, Jim AB - Fiber composites have been developed to take advantage of unique properties found in materials in fibrous form. Many materials in the form of fine filaments exhibit strength and stiffness characteristics far greater than those of the same material in bulk form. The combination of such filaments with a suitable matrix can yield a composite with properties superior to the same material in bulk. AN - dot:92974 ET - Volume 2 KW - Airplanes KW - Composite materials KW - Parts KW - Aviation KW - Structures LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1985-01-01 SN - DOT/FAA//CT-88/18 TI - Fiber Composite Analysis and Design: Volume II, Structures M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92974 ER - DB - ROSA P
Wheel Performance Evaluation Phase I - Analysis

Durup, Paul ;

Brussat, T. R.

1988-09-01 | PDF

This report describes the procedures of analysis and dynamometer testing that may be used to develop data and supporting technology for improving aircraft wheel performance. As related to current. wheel standards and in-service inspection procedures, load/test spectras which characterize wheel operating environments (associated with long, medium an ...

08/17/2026

Title : Wheel Performance Evaluation Phase I - Analysis Creator(s) : Durup, Paul;Brussat, T. R.;Bakow, L.; Corporate Creator(s) : Lockheed-California Company Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-09-01 Report Number : DOT/FAA/CT-88/16 URL : https://rosap.ntl.bts.gov/view/dot/92973
Durup, Paul et al. (1988). Wheel Performance Evaluation Phase I - Analysis.

Durup, Paul and Brussat, T. R. and Bakow, L. "Wheel Performance Evaluation Phase I - Analysis" (1988)

Durup, Paul et al. "Wheel Performance Evaluation Phase I - Analysis" , 1988
Export RIS Citation Information. TY - Tech Report AU - Durup, Paul AU - Brussat, T. R. AU - Bakow, L. A2 - Lockheed-California Company A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report describes the procedures of analysis and dynamometer testing that may be used to develop data and supporting technology for improving aircraft wheel performance. As related to current. wheel standards and in-service inspection procedures, load/test spectras which characterize wheel operating environments (associated with long, medium and short haul aircraft) are defined. These spectra may be applied as a basis for effective dynamometer testing and to the verification of wheel service limits taking into account stress corrosion and crack growth conditions. AN - dot:92973 KW - Airplanes KW - Testing KW - Tires LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-09-01 SN - DOT/FAA/CT-88/16 TI - Wheel Performance Evaluation Phase I - Analysis M3 - Tech Report N1 - United States N1 - DTFA03-B4-C-00044 UR - https://rosap.ntl.bts.gov/view/dot/92973 ER - DB - ROSA P
Enhanced Emergency Smoke Venting

Maylor, Elliott L.

1988-07-01 | PDF

This study evaluated two concepts for modifying the air conditioning systems of large commercial airplanes to enhance the venting of smoke that may be continuously injected into the passenger cabin during inflight fire emergencies. Data from past fire accidents and airplane tests provided a basis for creating four fire/smoke scenarios and deriving ...

08/17/2026

Title : Enhanced Emergency Smoke Venting Creator(s) : Maylor, Elliott L. Corporate Creator(s) : Boeing Commercial Airplane Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-07-01 Report Number : DOT/FANCI'-88/22 URL : https://rosap.ntl.bts.gov/view/dot/92972
Maylor, Elliott L. (1988). Enhanced Emergency Smoke Venting.

Maylor, Elliott L. "Enhanced Emergency Smoke Venting" (1988)

Maylor, Elliott L. "Enhanced Emergency Smoke Venting" , 1988
Export RIS Citation Information. TY - Tech Report AU - Maylor, Elliott L. A2 - Boeing Commercial Airplane A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This study evaluated two concepts for modifying the air conditioning systems of large commercial airplanes to enhance the venting of smoke that may be continuously injected into the passenger cabin during inflight fire emergencies. Data from past fire accidents and airplane tests provided a basis for creating four fire/smoke scenarios and deriving five sets of equations to predict the smoke venting effectiveness of current airplanes and the proposed concepts. Concept A would modify the air conditioning packs by adding high flow modes with dual outflow valves and Concept B would add ram air ventilation with an added dump valve. The estimated costs to incorporate Concept A or B in the U. S. fleet were about $381 million or $587 million, respectively. The effectiveness equations predicted that both concepts would provide only slightly significant smoke venting enhancement. Furthermore, the study showed that both concepts would have been negated by the reported crew actions and/or fire damage in past fires. It was concluded that current U. S. fleet airplanes will provide a majority of the passenger cabin free of smoke during inflight fires while the air conditioning systems are kept operating. AN - dot:92972 ET - Final Report KW - Air conditioning systems KW - Aircraft KW - Fires KW - Smoke KW - Ventilation systems LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-07-01 SN - DOT/FANCI'-88/22 TI - Enhanced Emergency Smoke Venting M3 - Tech Report N1 - United States N1 - DTFA03-87 -C-00038 UR - https://rosap.ntl.bts.gov/view/dot/92972 ER - DB - ROSA P
Technology Assessment for Aircraft Command in Emergency Situations

Blomberg, Richard D. ;

Bishop, Edward W.

1988-10-01 | PDF

This technology assessment determined the feasibility of FAA support for development of a computer-based system to supplement crew function during in-flight fire/smoke incidents. The system was designated Aircraft Command in Emergency Situations (ACES). It was limited to fire/smoke incidents in areas other than power-plant or lifting and control su ...

08/17/2026

Title : Technology Assessment for Aircraft Command in Emergency Situations Creator(s) : Blomberg, Richard D.;Bishop, Edward W.;Hamilton, John W.;Custer, Richard L. P.; Corporate Creator(s) : Dunlap and Associates, Inc. Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1988-10-01 Report Number : DOT/FAA/CT-88/20 URL : https://rosap.ntl.bts.gov/view/dot/92971
Blomberg, Richard D. et al. (1988). Technology Assessment for Aircraft Command in Emergency Situations.

Blomberg, Richard D. et al. "Technology Assessment for Aircraft Command in Emergency Situations" (1988)

Blomberg, Richard D. et al. "Technology Assessment for Aircraft Command in Emergency Situations" , 1988
Export RIS Citation Information. TY - Tech Report AU - Blomberg, Richard D. AU - Bishop, Edward W. AU - Hamilton, John W. AU - Custer, Richard L. P. A2 - Dunlap and Associates, Inc. A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This technology assessment determined the feasibility of FAA support for development of a computer-based system to supplement crew function during in-flight fire/smoke incidents. The system was designated Aircraft Command in Emergency Situations (ACES). It was limited to fire/smoke incidents in areas other than power-plant or lifting and control surfaces. It would be used in large commercial air transports. Thirteen scenarios of in-flight fire/smoke incidents which had occurred or were likely to occur were written to define the events to which a flight crew might have to respond. The responses to each scenario, based on current practice, were described and presented on a timeline. The development of each incident was described as were the significant operational and environmental features. An analysis of each scenario was then made to identify problems encountered in detection and management of the incident. Separate analyses of current sensor technology, aircraft computer/ display technology, and of human factors led to a hypothetical ACES system using smoke/heat sensing with determination of rate and extent of change in both. The postulated ACES was incorporated into the master warning concept with advisory displays forced to the cockpit. The scenarios were reanalyzed using the ACES and results compared to the first scenarios analysis. It was concluded that an ACES is technologically feasible and can be used in and facilitate air crew emergency procedures. Training will be needed but crew workload will not be negatively affected. In almost every incident the ACES concept significantly reduced reaction time and severity. AN - dot:92971 ET - Final Report KW - Airplanes KW - Fires KW - Flight crews KW - Survival KW - Fire detection systems KW - Air pilots KW - Workload LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1988-10-01 SN - DOT/FAA/CT-88/20 TI - Technology Assessment for Aircraft Command in Emergency Situations M3 - Tech Report N1 - United States N1 - DTFA03-87-C-00020 UR - https://rosap.ntl.bts.gov/view/dot/92971 ER - DB - ROSA P
Recommended Major Acquisitions in Industry Structure of Final System Plan

United States Railway Association

1975-02-01 | PDF

This color foldout map was prepared by the United States Railway Association in 1975 as an accompanying map to Final System Plan for Restructuring Railroads in the Northeast and Midwest Region Pursuant to the Regional Rail Reorganization Act of 1973, Volume I, Parts I and II. Volume I expressly states that the property and trackage-rights acquisiti ...

08/17/2026

Title : Recommended Major Acquisitions in Industry Structure of Final System Plan Corporate Creator(s) : United States Railway Association Published Date : 1975-02-01 URL : https://rosap.ntl.bts.gov/view/dot/92970
United States Railway Association (1975). Recommended Major Acquisitions in Industry Structure of Final System Plan.

United States Railway Association "Recommended Major Acquisitions in Industry Structure of Final System Plan" (1975)

United States Railway Association "Recommended Major Acquisitions in Industry Structure of Final System Plan" , 1975
Export RIS Citation Information. TY - Map A2 - United States Railway Association AB - This color foldout map was prepared by the United States Railway Association in 1975 as an accompanying map to Final System Plan for Restructuring Railroads in the Northeast and Midwest Region Pursuant to the Regional Rail Reorganization Act of 1973, Volume I, Parts I and II. Volume I expressly states that the property and trackage-rights acquisitions necessary to implement its recommendations are displayed on a color foldout map accompanying the report. The title, legend, and subject matter of the present sheet positively identify it as that map. AB - The map presents the property transfers, operating rights, and carrier relationships proposed under the preferred Final System Plan structure. Its legend identifies proposed acquisitions by ConRail, Chessie, Delaware and Hudson, Norfolk and Western, Grand Trunk Western, Southern, and Amtrak. It also identifies connecting routes operated by existing carriers and distinguishes acquisitions of routes for through and local service from proposed trackage rights over newly acquired or existing routes. Following N&W's withdrawal from the proposed Erie Lackawanna acquisition, Chessie is shown acquiring most of the viable Erie Lackawanna freight routes east of Sterling, Ohio, including the principal corridors through Buffalo, Binghamton, and northern New Jersey, together with most Reading services and selected access to Central Railroad of New Jersey territory. AB - The map also shows proposed Delaware and Hudson extensions intended to strengthen competitive access; Grand Trunk Western acquisitions in Michigan; selected Norfolk and Western additions; Amtrak acquisitions associated with passenger corridors; and Southern Railway's proposed acquisition of the Delmarva Peninsula lines and the Cape Charles-Norfolk car-float route. AB - This map depicts the preferred Final System Plan allocation rather than the property conveyances ultimately completed. Implementation depended on acceptance by the acquiring solvent railroads and completion of the necessary agreements. The major Chessie and Southern transactions were not completed, and many properties shown as proposed acquisitions by those carriers were instead included in the larger Conrail startup system. AB - The map is useful for studying the evolution from the Preliminary System Plan to the Final System Plan, the proposed allocation of bankrupt railroad assets among ConRail and solvent carriers, competitive-access policy, proposed trackage rights, and the differences between the preferred Final System Plan structure and the railroad network implemented in 1976. AB - United States Railway Association. (1975). Recommended major acquisitions in industry structure of Final System Plan [Map accompanying Final System Plan, Volume I, Parts I and II]. AN - dot:92970 KW - Abandonment KW - Bankruptcy KW - Bibliographies KW - Economics KW - Financing KW - Marketing KW - Regional planning KW - Maps KW - Railroads KW - Regional railroads LA - English PB - United States Railway Association PY - 1975-02-01 TI - Recommended Major Acquisitions in Industry Structure of Final System Plan M3 - Map N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92970 ER - DB - ROSA P
Final System Plan Freight Service Lines Operated by ConRail

United States Railway Association

1975-02-01 | PDF

This color foldout map was prepared by the United States Railway Association in Washington, D.C., in July 1975 as an accompanying map to Final System Plan for Restructuring Railroads in the Northeast and Midwest Region Pursuant to the Regional Rail Reorganization Act of 1973, Volume I, Parts I and II. Volume I expressly states that a second foldout ...

08/17/2026

Title : Final System Plan Freight Service Lines Operated by ConRail Corporate Creator(s) : United States Railway Association Published Date : 1975-02-01 URL : https://rosap.ntl.bts.gov/view/dot/92969
United States Railway Association (1975). Final System Plan Freight Service Lines Operated by ConRail.

United States Railway Association "Final System Plan Freight Service Lines Operated by ConRail" (1975)

United States Railway Association "Final System Plan Freight Service Lines Operated by ConRail" , 1975
Export RIS Citation Information. TY - Map A2 - United States Railway Association AB - This color foldout map was prepared by the United States Railway Association in Washington, D.C., in July 1975 as an accompanying map to Final System Plan for Restructuring Railroads in the Northeast and Midwest Region Pursuant to the Regional Rail Reorganization Act of 1973, Volume I, Parts I and II. Volume I expressly states that a second foldout map accompanying the report shows the ConRail freight-service network. The title and legend of the present sheet positively identify it as that map. AB - The map depicts the freight-service network proposed for operation by ConRail under the preferred Final System Plan structure. Its legend distinguishes ConRail through- and local-service lines, ConRail trackage rights for through and local service, and ConRail trackage rights for overhead traffic only. The mapped system extends from St. Louis and Chicago through the Midwest, Great Lakes region, Pennsylvania, New York, New Jersey, New England, Maryland, and connecting portions of Canada. AB - The network shown is the smaller ConRail system that would have remained after the proposed acquisitions by solvent railroads were completed. Most Erie Lackawanna and Reading properties proposed for acquisition by Chessie are therefore absent from ConRail's directly operated network. ConRail is shown retaining selected routes and trackage rights, including overhead rights over portions of the Reading system. In the Philadelphia-Reading corridor, ConRail also retained an independent route over the former Penn Central, originally Pennsylvania Railroad, Schuylkill Branch, identified in the Final System Plan property schedules as the Schuylkill Secondary. This provided a ConRail-controlled connection from Philadelphia to Reading and the retained routes north of Reading, rather than requiring ConRail to depend exclusively on trackage rights over lines associated with the proposed Chessie system. The parallel former Reading main-line corridor was subject to a more complex combination of property assignments and reciprocal operating rights. AB - Much of the Delmarva Peninsula network is also absent because the Final System Plan proposed that Southern Railway acquire the former Penn Central lines east and south of Wilmington, Delaware, together with the Cape Charles-Norfolk car-float operation. The map should not be interpreted as a Day 1 Conrail map. The preferred structure depended on completion of the proposed acquisitions by Chessie, Southern, and other solvent carriers. Those acquisitions were not completed, and Conrail began operations on April 1, 1976, over a larger network that included many properties omitted from this map. AB - The map is useful for distinguishing the preferred Final System Plan ConRail network from both the Preliminary System Plan proposal and the larger system ultimately operated by Conrail. It supports research concerning proposed property transfers, trackage rights, competitive rail access, the proposed Chessie and Southern acquisitions, and implementation of the Regional Rail Reorganization Act of 1973. AB - United States Railway Association. (1975, July). Final System Plan freight service lines operated by ConRail [Map accompanying Final System Plan, Volume I, Parts I and II]. AN - dot:92969 KW - Abandonment KW - Bankruptcy KW - Bibliographies KW - Economics KW - Financing KW - Marketing KW - Regional planning KW - Maps KW - Railroads KW - Regional railroads LA - English PB - United States Railway Association PY - 1975-02-01 TI - Final System Plan Freight Service Lines Operated by ConRail M3 - Map N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92969 ER - DB - ROSA P
Northeast and Midwest Recommended Industry Structure: Competitive Freight Service Mainline Routes

United States Railway Association

1975-02-01 | PDF

This separately issued color map was prepared by the United States Railway Association in Washington, D.C., in February 1975 as an accompanying map to Preliminary System Plan, Volume I: For Restructuring Railroads in the Northeast and Midwest Region Pursuant to the Regional Rail Reorganization Act of 1973. Volume I expressly refers to an enclosed l ...

08/17/2026

Title : Northeast and Midwest Recommended Industry Structure: Competitive Freight Service Mainline Routes Corporate Creator(s) : United States Railway Association Published Date : 1975-02-01 URL : https://rosap.ntl.bts.gov/view/dot/92968
United States Railway Association (1975). Northeast and Midwest Recommended Industry Structure: Competitive Freight Service Mainline Routes.

United States Railway Association "Northeast and Midwest Recommended Industry Structure: Competitive Freight Service Mainline Routes" (1975)

United States Railway Association "Northeast and Midwest Recommended Industry Structure: Competitive Freight Service Mainline Routes" , 1975
Export RIS Citation Information. TY - Map A2 - United States Railway Association AB - This separately issued color map was prepared by the United States Railway Association in Washington, D.C., in February 1975 as an accompanying map to Preliminary System Plan, Volume I: For Restructuring Railroads in the Northeast and Midwest Region Pursuant to the Regional Rail Reorganization Act of 1973. Volume I expressly refers to an enclosed large color map titled Northeast and Midwest Recommended Industry Structure. The present map bears that title and adds the subtitle Competitive Freight Service Mainline Routes. The map presents USRA's preliminary recommended structure for competitive freight-service mainline routes in the Northeast and Midwest. Its legend identifies routes proposed for ConRail, Norfolk and Western, "EL East," Chessie, and the Delaware and Hudson-Boston and Maine grouping. Dotted lines indicate proposed trackage rights. AB - Under this preliminary proposal, ConRail would be formed primarily from Penn Central and designated portions of the smaller railroads in reorganization. Norfolk and Western would operate its existing system together with the Erie Lackawanna routes from Buffalo through Binghamton to the New York-Newark area. The proposed assignment of "EL East" to N&W likely reflected, at least in part, N&W's historical financial and corporate interest in Erie Lackawanna through its wholly owned Dereco holding company, as well as the geographic value of the Erie Lackawanna route as an eastward extension of the N&W system. This is a historically supported interpretation rather than a rationale stated on the map itself. AB - Chessie would retain its existing system and obtain access to the Reading's Philadelphia and Allentown markets, principally through proposed trackage rights over routes that would also serve as ConRail main lines. Delaware and Hudson would receive access over the Lehigh Valley route between Wilkes-Barre and Allentown, strengthening its connections with Chessie and the Boston and Maine. The map records a preliminary proposal rather than a final property-conveyance or operating arrangement. Following N&W's withdrawal from the proposed Erie Lackawanna expansion, USRA revised the structure for the July 1975 Final System Plan. See Map 3, Final System Plan Freight Service Lines Operated by ConRail, for the resulting ConRail network under the preferred Final System Plan structure, and Map 4, Recommended Major Acquisitions in Industry Structure of Final System Plan, for the revised allocation of properties and trackage rights that produced that network. AB - The map is useful for studying the evolution of the Preliminary and Final System Plans, USRA's proposed competitive carrier structure, the historical relationship between N&W and Erie Lackawanna, proposed trackage rights, route rationalization, and the planning process that led to the formation of Conrail. AB - United States Railway Association. (1975, February). Northeast and Midwest recommended industry structure: Competitive freight service mainline routes [Map accompanying Preliminary System Plan, Volume I]. AN - dot:92968 KW - Abandonment KW - Bankruptcy KW - Bibliographies KW - Economics KW - Financing KW - Marketing KW - Regional planning KW - Maps KW - Railroads KW - Regional railroads LA - English PB - United States Railway Association PY - 1975-02-01 TI - Northeast and Midwest Recommended Industry Structure: Competitive Freight Service Mainline Routes M3 - Map N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92968 ER - DB - ROSA P

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