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原文传递 TxDOT Travel Survey Program: External Surveys on High Volume Facilities.

题名：	TxDOT Travel Survey Program: External Surveys on High Volume Facilities.
作者：	farnsworth, s. p. hard, e. n.
关键词：	texas, transportation planning, public transportation, urban areas, volume, highway safety, traffic control, modeling, methodology, legal aspects, evaluation, research programs
摘要：	In the 1990s, the Texas Department of Transportation (TxDOT) began a comprehensive travel survey program. The program, administered by the Transportation Planning and Programming Division, is charged with providing reliable information that can be utilized by transportation planners to make decisions on future road projects. While the Travel Survey Program is comprised of four primary survey types, the external survey (or roadside survey) is one of the most visible. External surveys are conducted at or near the boundaries of urbanized areas in order to collect information on the amount and characteristics of vehicles traveling into, out of, and through the study area. For roadways with low to moderate levels of traffic, external surveys generally use an intercept interview method. With this method, a traffic control plan is established and field personnel randomly stop motorists and request their participation. For roadways with high traffic volumes (typically Interstate highways or roads with more than 20,000 vehicles per day), several methods for collecting external data are available. These methods include roadside intercept interview, roadside intercept postcard mailback, license plate match, and license plate mailout.
总页数：	u0708；2p
报告类型：	科技报告