Publications by David Ungemah

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Transportation Research Record articles - now available

Download Articles published in the Transportation Research Record

The following Transportation Research Record articles are now available for download:

icon Automated Vehicle Occupancy Verification Systems - Policy and Legal Implications (191.11 kB)

icon Discussing High-Occupancy Toll Lanes with the Denver, Colorado, Public (1.39 MB)

icon I’ll Tell You What I Think! A National Review of How the Public Perceives Pricing (212.18 kB)

icon Life-Cycle Graphical Representation of Managed High-Occupancy Vehicle Lane Evolution (1.26 MB)

icon So You Want to Make a High-Occupancy Toll Lane? Project Manager’s Guide for HOT Conversion (156.11 kB)

icon The World Can Be Flat - Case Study of Flat-Rate Pricing for Vanpool Operations (473.01 kB)

icon This Land Is Your Land, This Land Is My Land - Addressing Equity and Fairness in Tolling and Pricing (164.36 kB)

 

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Examining Incentives and Preferential Treatment of Carpools on Managed Lane Facilities

Journal of Public Transportation, Volume 10, Number 4, 2007.

Journal of Public TransportationAs managed lanes (ML) are considered throughout more than 25 North America cities, there is a need for guidance in defining the role of carpools in tolled ML and the trade-offs between carpool exemptions and other project objectives. Increasingly, project objectives are reflecting not only mobility concerns but the need to generate revenue as well. As a result, allowing exempt or discounted users, such as carpools on priced-ML requires an evaluation of revenue impacts as well as mobility interests such as person movements, operations, and emissions.

This article highlights the existing body of knowledge regarding carpooling, facilities, and incentives designed to encourage carpooling and carpooling’s contributions to society. Following a review of literature, state and regional entities involved in either operating existing ML facilities or planning for new facilities were interviewed to determine the rationale for setting their carpool policies.

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icon Examining Incentives and Preferential Treatment of Carpools on Managed Lane Facilities (463.63 kB)