Benefit Measurements of Highway Electronic Route Guidance

by Salvatore J. Bellomo, Assoc. Transp. Planning Engr.; Alan M. Voorhees and Assoc., Inc., McLean, VA,
George K. Young, Jr., Adjunct Associate Professor; Catholic Univ. of America, Washington, DC,

Serial Information: Transportation Engineering Journal of ASCE, 1972, Vol. 98, Issue 1, Pg. 51-69

Document Type: Journal Paper


This paper develops and presents economic user benefits associated with alternative Electronic Route Guidance Systems (ERGS) for a sample test highway network in Springfield, VA (45,000 population), which contains several major freeway and arterial streets. The basis conclusions of the analysis are: (1) Benefits accrue faster than costs for all loop density patterns studied which range from 15% to 100% deployment of the test network; (2) the most critical components of the benefit functions were found to be the cost per accident and the value of lost time; (3) the benefits of a fully developed Electronic Route Guidance System (ERGS) in the test network were $3,270 per day; and (4) if in the vehicle display unit, costs are increased to values over $135, there will be no excess accident and mistake avoidance benefits with a fully developed static ERGS.

Subject Headings: Highways and roads | Routing (transportation) | Intelligent transportation systems | Traffic accidents | Economic factors | Transportation networks | Population projection | Streets | Virginia | United States

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