@article{ref1,
title="Field data collection and sampling procedures for measuring regional vehicle classification and occupancy",
journal="Transportation research record",
year="1979",
author="Ferlis, Robert A.",
volume="701",
number="",
pages="1-6",
abstract="Small-scale field survey procedures that can be used to measure vehicle classification and occupancy at predetermined levels of statistical precision are described. Potential uses of these data to support activities related to transportation system management, air quality, energy efficiency, validation of urban transportation planning models, and trend analysis are identified. Statistical sampling plans, including plans that use the results of parallel traffic-monitoring programs, are presented to enable local planning agencies to design cost-effective field surveys. Representative values for key sampling parameters based on previous surveys, which are needed to use these sampling techniques, are provided. These procedures are then applied to a problem of survey design that demonstrates that regional occupancy can be precisely measured through the use of a small field survey.<p />",
language="en",
issn="0361-1981",
doi="",
url="http://dx.doi.org/"
}