AP-G84/04 Best practice in road use data collection, analysis ... - WIM

Accessed by AR - ARRB TRANSPORT RESEARCH on 04 Feb 2005
Austroads 2004
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Best Practices in Road Use Data Collection, Analysis and Reporting
traffic data coverage within a region. Seasonal factors are
used to estimate AADT from this data.
Traffic patterns These are the variation of traffic volumes over a period of
time.
Turning movement A turning movement count is the number of vehicles
observed to make a particular turning movement (left or right
turn, or through movement) at an intersection over a
specified period. All traffic counts fall into one or other
category of link counts or turning movement counts.
Twelve hour volume The 12-Hour Volume on a road is the number of vehicles
passing an observation point over a given 12-hour interval
during a day.
Vehicle-Kilometres Travelled Vehicle-Kilometres Travelled (VKT) is the amount of travel
given by the product of the total number of vehicles and their
distance travelled. VKT is usually expressed as an annual
statistic, and sometimes expressed as a daily statistic due to
the convention of expressing traffic volumes as an average
daily value. The yearly VKT is the daily VKT multiplied by the
number of days in that year (365 or 366 days).