@article{ref1,
title="Evaluation of the FHWA vehicle classification and automobile-occupancy sampling manual",
journal="Transportation research record",
year="1980",
author="Hupp, R. Craig and Palombo, Carmine",
volume="779",
number="",
pages="21-26",
abstract="The Federal Highway Administration recently sponsored the development of a how-to manual for conducting automobile-occupancy and/or vehicle classification studies. A draft version of the manual, Guide for Estimating Urban Vehicle Classification and Occupancy, was field tested by the Southeast Michigan Council of Governments in cooperation with the Michigan Department of Transportation. This paper describes how the guide was used to set up a regional vehicle classification and automobile-occupancy study. Study procedures and results are discussed. Overall, the guide was found to be an excellent how-to manual for vehicle classification and automobile-occupany studies. Perhaps the largest contribution of the guide is the short-count sampling approach it recommends. This approach results in a significant survey cost saving with no loss of accuracy.<p />",
language="en",
issn="0361-1981",
doi="",
url="http://dx.doi.org/"
}