Variables influencing spot-speed characteristics
Subtitle: review of literature
By: [by] J.C. Oppenlander
Contributors: University of Illinois (Urbana-Champaign campus). Engineering Experiment Station
Series: Special report 89; NAS-NRC publication 1332; Special report (National Research Council (U.S.). Highway Research Board) -- 89.
Publisher: National Research Council, Highway Research Board
Published: 1966
Place of publication: Washington
Language: eng
Number of pages: 38
Subjects: Traffic engineering; Automobiles; Speed; Spot speed; Traffic speed; Highways; Fahrgeschwindigkeit; Verkehrsablauf
Description: 160 articles are included in this review which is divided into five basic groups: driver, vehicle, roadway, traffic and environment. The articles seem to indicate that of the driver variables, trip distance has the most significant influence on spot speed. Type and age of vehicle are also predominant in their effect on spot speeds. In the area of roadway characteristics, those of classification, curvature, gradient, number of lanes, and surface type tend to be of significant influence. Traffic density and vehicle volume dominate the traffic variables and the important environmental factors are usually time and weather insofar as spot speeds are concerned.
Notes: "Publication of this report was aided in part by a financial grant from the Eno Foundation for Highway Traffic Control, Inc."

"This review was prepared ... under the auspices of the Engineering Experiment Station of the University of Illinois and with the cooperation and financial assistance of the Division of Highways, State of Illinois, and U.S. Bureau of Public Roads."

Includes bibliographical references.
Table of contents: title: Synopsis; title: Introduction; title: The driver; title: The vehicle; title: The roadway; title: The traffic; title: The environment; title: Acknowledgments; title: Bibliography; title: Subject index.