Design and evaluation of modified centerline rumble strips : final report.

Details

• Creators:
  Kim, Yong-Rak ; You, Taesun ; Rilett, Laurence R.
• Corporate Creators:
  University of Nebraska--Lincoln. Dept. of Civil Engineering ; Nebraska Transportation Center ; United States. Federal Highway Administration
• Corporate Contributors:
  Nebraska. Dept. of Roads
• Subject/TRT Terms:
  Center Lines Damage Prediction Finite Element Simulation Highway Design Highway Safety Pavement Pavement Distress Road Markings Rumble Strips Two Lane Highways Centerline Rumble Strip Design
• Publication/ Report Number:
  26-1121-4026-001
• Resource Type:
  Tech Report
• Geographical Coverage:
  Nebraska;United States
• Corporate Publisher:
  Nebraska. Dept. of Roads
• Abstract:
  A centerline rumble strip (CLRS) is primarily installed on the centerline of undivided two-lane and two-way roadways
  
  to alert drivers that they are moving out of their intended travel lane. The main purpose of CLRSs is to reduce crossover
  
  collisions typically caused by inattentive, distracted, drowsy, or fatigued drivers. Despite the safety benefits,
  
  CLRSs that were milled over or adjacent to the centerline joint may increase or accelerate the deterioration and
  
  degradation of the pavement structure, which has been observed in Nebraska pavements. In this research project, new
  
  (or modified) CLRS designs were sought to reduce pavement damage, while satisfying the safety purpose of CLRSs.
  
  A literature review including a survey of the CLRS design practices in different states and discussions with the project
  
  technical advisory committee (TAC) members resulted in three proposed modified CLRS designs. Then, the current
  
  (8”-4”-8” with 0.5” depth) and modified designs (6”-6”-6” with 0.5” depth, 5”-7”-5” with 0.375” depth, and 6”-8”-6”
  
  with 0.5” depth) were evaluated using finite element pavement modeling and simulations to assess the stress and
  
  damage potential of pavements associated with the different CLRS designs. Two primary types of pavements in
  
  Nebraska (i.e., composite pavements and concrete pavements) were considered. Model simulation results demonstrated
  
  that pavements with CLRSs showed higher stress than pavements without CLRSs. In addition, each CLRS design
  
  induced different stress distributions (and damage potential) due to different tire-pavement contact. The highest stress
  
  typically occurred at the corner/edge of the CLRS, and the current CLRS design (i.e., 8”-4”-8” with 0.5” depth)
  
  produced higher stress (or damage potential) than the modified designs in both types of pavements. A comparison of
  
  the three modified CLRS designs in this study showed that one modified design (6”-6”-6” with 0.5” depth) generally
  
  yielded the lowest stress. This research provides preliminary insights into how a modified CLRS design can reduce the
  
  pavement damage, while the findings should be validated through field testing in a follow-up effort.
  
  
• Format:
  PDF
• Funding:
  SPR-P1(16) M034
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:97e97f32630ef38922f86a3d0dddea10ede33fb1d4da1fd1dfef9ca7741952feb6fb5d461f6adde63b28e9f0ef260dfa3c43ad263314f29e2b782298ea3eee73
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32114/dot_32114_DS1.pdf
• File Type:
  [PDF - 3.60 MB ]