United States Department of Transportation
i
Improving traveler information on rural corridors in Wyoming through the use of intelligent transportation systems.
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2014-03-01
[PDF-2.92 MB]
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Abstract:Using intelligent transportation systems to help report traveling conditions has been reserved for urban
areas. The goal of this research was to help develop a new methodology for incorporating travel times
calculated from intelligent transportation system (ITS) technology into Wyoming’s road and weather
condition reporting system. Bluetooth sensors and speed sensors were used to measure travel times on I-80
between Cheyenne and Laramie, as well as WY-28 between Farson and Lander in Wyoming. From
previous research, the distribution of travel times on I-80 show two distinct modes. Travel times from the
WY-28 corridor were then calculated to determine if this trend was common with other rural highways. The
next step in this research was to determine the best way to measure travel times on a rural corridor.
Bluetooth sensor travel time data was compared to speed sensor travel time data. Then a travel time index
was created for I-80 from one year of speed sensor data. This travel time index was then modeled with
weather variables downloaded from road weather information system (RWIS) stations. Finally, a
methodology for implementing and evaluating this new travel time reporting procedure was developed. The
results of this research will help to improve the current condition reporting system by incorporating both
physical conditions (slick in spots, high wind speed, etc.) with travel times. This will help all types of
travelers to more accurately quantify the severity of traveling conditions.
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