Abstract
We investigated the accuracy (overall, sensitivity and positive predictive value (PPV)) of the speed zone recorded for the location of crashes in a sample of Victorian police-reported crash data. Data on crashes that occurred on 111 road segments (where the true speed limit was known) in the Melbourne metropolitan area were obtained. The speed zone recorded for each crash location was compared to the true speed limit. Speed zone was not recorded correctly in almost one-quarter of crashes. Sensitivity varied by speed zone and was highest for crashes that occurred in 60 km/h zones. PPV was extremely low for crashes recorded as occurring in 50 km/h zones; almost 90% did not occur in 50 km/h zones. Misclassification of speed zone was less frequent when police attended the scene. The misclassification affected estimates of association between speed zone and crash severity. Implications and recommendations for rectifying the problem are discussed.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 2017 Australasian Road Safety Conference |
| Editors | M. Mongiardini, R. H. Grzebieta, P. Palamara |
| Place of Publication | ACT Australia |
| Publisher | Australasian College of Road Safety |
| Number of pages | 8 |
| ISBN (Print) | 9780648184805 |
| Publication status | Published - 2017 |
| Event | Australasian Road Safety Conference 2017: Expanding our Horizons! - Perth, Australia Duration: 10 Oct 2017 → 12 Oct 2017 https://mailchi.mp/acrs/the-post-conference-wrap-up-999421?e=6e8f765557 |
Conference
| Conference | Australasian Road Safety Conference 2017 |
|---|---|
| Abbreviated title | ACRS 2017 |
| Country | Australia |
| City | Perth |
| Period | 10/10/17 → 12/10/17 |
| Internet address |