Details:

Alternative Title:
Project title: Developing a work zone safety and mobility performance monitoring plan for Texas
Creators:
Ullman, Gerald L. ; Porter, Richard J. ; Karkee, Ganesh J. ;
Ullman, Gerald L. ; Porter, Richard J. ; Karkee, Ganesh J. ; Less -
Corporate Creators:
Texas Transportation Institute ;
Corporate Contributors:
Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration ;
Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration ; Less -
Subject/TRT Terms:
[+]
Roads $z Texas $x Maintenance and repair $x Safety measures.
Work Zone Safety
Work Zone Traffic Control

Publication/ Report Number:
FHWA/TX-09/0-5771-1 ;
Resource Type:
Tech Report ;
Geographical Coverage:
Texas ;
OCLC Number:
459788288
Edition:
Technical report; Sept. 2006-Aug. 2008.
Corporate Publisher:
Texas Transportation Institute ;
NTL Classification:
NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Flow ; NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Control Devices ; NTL-SAFETY AND SECURITY-Highway Safety ; NTL-SAFETY AND SECURITY-Accidents ;
Abstract:
In this report, Texas Transportation Institute researchers identify key work zone safety and mobility performance measures that the Texas Department of Transportation (TxDOT) should target as part of a work zone monitoring program within a district, region, or across the state. Analysis methodologies and computational procedures are presented that will yield the recommended performance measures. For mobility-based measures, researchers recommend that TxDOT target the collection of queue length and travel time delay data caused by temporary lane closures, as the congestion and delays that result from those activities are the simplest to isolate and attribute to the work activities themselves. With regard to work zone safety monitoring, researchers developed procedures that aid a district or project engineer in determining which projects are most suitable for safety monitoring via a periodic review of crash statistics occurring before and during the project. Researchers developed graphs that indicate combinations of work zone length (or work zone segment length), average daily traffic, normal crash rate, and work zone phase or project direction that will most likely allow for reasonable inferences to be made regarding the relative level of safety being maintained within the project. Researchers also developed graphs to aid field or district personnel in quickly determining whether accident frequencies being experienced during a project are within, or above, tolerance limits for that type of project on that facility.
Format:
PDF ;
Funding:
Project 0-5771 ;
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:9c263656b59ab8857ec64afb6bb432834ece5fa38eefa9543d45f36f8226995b
File Type:

Supporting Files

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