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|Title||Evaluate travel speeds and associated risk of casualty crashes through intersections in Australia using naturalistic driving data|
|Authors||Mongiardini M, Stokes CS, Leone P, Marchesan C, Premrl J, Varsos P, Grzebieta R|
|Abstract||Numerous crashes occur at intersections due to their inherent nature of creating potential points of conflict between traffic flows from different directions. To minimise the risk of casualty crashes, intersection designs should mitigate travel speeds within safe energy levels. This study aims to identify speeds and associated casualty risks of Australian drivers when travelling through some of the most common types of intersections.
Speeds of vehicles travelling in free-flow fashion through 93 intersections were extracted from the dataset of the Australian Naturalistic Driving Study (ANDS). Potential correlation of average and 85th-percentile speeds with intersection design characteristics was investigated. The risk of casualty crashes was assessed based on average speed and expected impact angles for each type of intersections.
Of all the types of intersections considered, roundabouts are characterised by the lowest average and 85th-percentile travel speeds, and the only design with average speeds resulting in a casualty risk below 10%.
|Conference Name||2021 Australasian Road Safety Conference|
|Conference Location||Melbourne, Australia|
|Conference Date||28-30 September 2021|
|Mongiardini M, Stokes CS, Leone P, Marchesan C, Premrl J, Varsos P, Grzebieta R (2021) 'Evaluate travel speeds and associated risk of casualty crashes through intersections in Australia using naturalistic driving data', 2021 Australasian Road Safety Conference, Melbourne, Australia, 28-30 September 2021.|