Effect of Work Zone Length and Speed Difference Between Vehicle Types on Delay-Based Passenger-Car Equivalents in Work Zones.

Author(s)
Chitturi, M.V. & Benekohal, R.F.
Year
Abstract

This paper presents how Delay-based Passenger Car Equivalent (D-PCE) values of heavy vehicles in work zones vary with work zone length, speed difference between vehicle types, heavy vehicle type, traffic volume and heavy vehicle percentage. The D-PCE values increased with increasing volume, work zone length and speed difference between vehicle types. Speed differencehad the most significant effect on D-PCE. They decreased with increasing heavy vehicle percentage. Depending on the work zone length, speed difference between vehicle types, volume and percentage heavy vehicles, the D-PCEvalues ranged from 1.01 to 21.18. Operation of two lane highways resembleone lane work zones more closely than basic freeway sections and the D-PCE values are comparable to the PCE values of heavy vehicles for two lane highways. D-PCE values for different combinations of the factors were developed in this paper.

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Publication

Library number
C 45257 (In: C 43862 CD-ROM) /73 / ITRD E843748
Source

In: Compendium of papers CD-ROM 87th Annual Meeting of the Transportation Research Board TRB, Washington, D.C., January 13-17, 2008, 13 p.

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