01336814

Component

https://doi.org/10.3141/2265-12

http://scholar.google.com....+Xu&publication_year=2011

The primary objective of the present study was to identify how automated speed enforcement (ASE) affected the speeds that drivers choose on rural highways. The study specifically sought answers to the following two questions: (a) How did drivers respond to ASE on rural highways where live speed enforcement is limited? (b) What was the spatial extent of the speed reduction effects of ASE on rural highways? The research team compared speed data collected at various distances from seven sites in the Nanjing area of China where speed cameras were deployed. It was found that ASE significantly reduced vehicle speeds and speed violations in the vicinity of the locations where the speed cameras were deployed. However, ASE was not an effective way to reduce vehicle speeds on road sections beyond the area of influence of the speed cameras. The speed profiles developed in this study showed that the area of influence of a speed camera on a rural highway was generally less than 1 km. Drivers usually started to decelerate about 300 to 400 m before the speed cameras and recovered their original speeds about 300 to 400 m after the speed cameras. The findings suggested that without supplementation with other live speed enforcement efforts, such as mobile or stationary police patrols, elimination of speed violations on rural highways by the use of ASE alone would be difficult. A more realistic solution would be to deploy speed cameras at preselected potentially hazardous locations, such as intersections and horizontal curves, to help reduce speed violations.

01365022

11-1341

English

pp 109-117

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309223027

Print

Figures (10) ; Photos; References (17) ; Tables (4)

Automated enforcement; Behavior; Cameras; Drivers; Rural highways; Speed control; Speeding; Traffic law enforcement

Speed reduction (Motor vehicles)

Nanjing (China)

Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control; I83: Accidents and the Human Factor

TRIS, TRB

Feb 17 2011 5:46PM

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