Traffic characteristics, such as the annual average daily traffic (AADT) and the AADT for each vehicle class, are essential for highway maintenance and planning. In practice, selected road segments are monitored continuously every day of the year to identify their traffic characteristics. A sample of the remaining road segments is monitored for 1 or 2 d each year, and the resulting data are adjusted (by using factors based on data collected from the continuously monitored road segments) to produce estimates of annual average daily traffic characteristics. A simulation study empirically considered how the precision of an estimate from a continuously monitored site compares with the precision of an estimate from a short-term monitored site. The original estimates of traffic characteristics (i.e., AADT and AADT by vehicle class) treating the site as a continuously monitored site are on average quite close to, but smaller than, the simulated estimates treating the site as a short-term monitored site. The original estimates (continuous monitoring) appear to be more precise, on average, than the simulated estimates (short-term monitoring). This decrease in precision typically occurs for vehicle classes that account for less than 1 percent of the daily traffic volume, suggesting that these less-common vehicle classes could be combined to achieve reliable AADT estimates.
Traffic Count Estimates for Short-Term Traffic Monitoring Sites: Simulation Study
Transportation Research Record: Journal of the Transportation Research Board
Transportation Research Record: Journal of the Transportation Research Board ; 1625 , 1 ; 26-34
01.01.1998
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Traffic Count Estimates for Short-Term Traffic Monitoring Sites: Simulation Study
British Library Conference Proceedings | 1998
|Engineering Index Backfile | 1928
|Managing Traffic Count Infrastructure
British Library Conference Proceedings | 2010
|TRAFFIC MONITORING USING SHORT-LONG TERM BACKGROUND MEMORY
British Library Conference Proceedings | 2002
|