The Transportation Institute is Officially Launched at UF on Oct. 4, 2013.

The CMS Final Report for 2007-2013 is now available. [view]

Dr. Lily Elefteriadou quoted in an article related to federal funding in the Gainesville Sun.

Congratulations to the UF team for winning the 2013 ITE Traffic Bowl Grand Championship!

The STRIDE 2012 Annual Report is available for download. [view]

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Heavy Vehicle Effects on Florida Freeways and Highways

Contracting Agency: Florida Department of Transportation
Principal Investigator: Dr. Scott Washburn
FDOT’s primary source to conduct highway capacity and level of service analyses from planning through design is the Transportation Research Board’s Highway Capacity Manual (HCM).  FDOT’s FREEPLAN and HIGHPLAN software programs utilize truck passenger car equivalency (PCE) values from the HCM to account for the effects of trucks on traffic flow operations.  The PCE values in the HCM used for freeways and multilane highways are based on a study performed in the mid-1990’s[1].  Since that time, commercial truck performance technologies have changed.  Furthermore, loading conditions may be considerably different today given the tremendous growth in freight movement.  Additionally, the PCE values developed in that study were based strictly on simulation and a now outdated version of CORSIM (5.0).  And finally, the PCE values taken from that study for inclusion in the HCM correspond to just a single “typical” truck (although the study considered multiple categories of trucks), which may not be representative of a typical truck in Florida, and accounting for just a single truck type may lead to considerable error in level of service results in some situations.  The objective of this project is to develop truck PCE values appropriate for commercial truck conditions on Florida freeways and multilane highways

[1] Webster, N., and L. Elefteriadou. A Simulation Study of Truck Passenger Car Equivalents (PCE) on Basic Freeway Segments. Transportation Research, Vol. 33B, No. 5, 1999, pp. 323–336.


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Transportation Research Center
Lily Elefteriadou, Ph.D., TRC Director
University of Florida Civil & Coastal Engineering
512 Weil Hall | PO Box 116500 | Gainesville, FL 32611-6580
352.392.9537, Ext. 1409
University of Florida
Last Updated 10/7/2013