TRAVEL SPEED PERFORMANCE INDICATORS
The following requirements of the agreed methodology should be noted when considering the qualifications of each of the member authorities:
Travel data collections are undertaken up to three times during the financial year — in March/April, July/August and October/November.
Tasmania and the Northern Territory are not participating in the measurement of Travel Speed performance indicators.
Less than 1% of both the Northern Territory’s and Tasmania’s arterial networks are in urban areas where congestion is an issue of major concern.
Roads included in the rural network sample have traffic volumes and environments that are predominately rural and are generally associated with the start of the rural speed zone.
The surveyed network is a 15% sample of all ‘M’, ‘A’ and ‘B’ classification roads and any ‘C’ road carrying more than 2000veh/day (AADT).
The 15% sample is surveyed once per year between February and April with a maximum interval between surveys of three years. The next scheduled reporting year is 2001/02.
The methodology for the measurement of Variability of Travel Time was reviewed by Queensland in 2003. As a result, standard deviation is now calculated for the average route time (by considering inbound and outbound direction) instead of directional standard deviation. Therefore, 2002/03 results and onward should not be compared against previous years.
A new time series will commence from 2002/03 financial year.