Purposes of travel time and delay study
- Travel time being a good indication of efficiency of roadway.
- Before and after studies, utilising data on travel time and delay, are used to determine effectiveness of a traffic improvement, such as parking restriction, signal timing, new one way street, etc.
- To determine the need for traffic signals.
- Information on amount, cause and location of delays helps in locating ‘congestion spots’, where proper remedial measures can be taken.
- Economic studies such as cost-benefit analysis utilise travel time and delay data.
- Traffic assignment is based on speed -delay characteristics.
- Sufficiency ratings or quality indices methods based on travel time, are used to compare different roads and assess the quality.
