Speed warnings and enforcement can be administered locally on a road stretch, and on a road network. Local automatic speed warning at an urban intersection reduced the mean speed by 5 km/hr. Theoretically, a reduction in accidents of 25 to 65 percent can be achieved. At a rural intersection, the speed limit was reduced from 100 to 70 km/hr. An automatic sign warns speeding cars; this resulted in a lowering of the mean speed from around 80 to 63 km/hr. An automatic speed warning and enforcement system on two-lane rural road stretches where the speed limit is 80 km/hr resulted in a reduction of the mean speed from 78 to 73 km/hr; the percentage of speeders decreased from 40 to 10 percent. The total number of accidents was reduced by 35 percent. This effect was almost the same three years after concluding the experiment. The problem of vandalism could be diminished by mounting the camera on a high pole, mechanically preventing climbing of the pole, automatic detection of vandalism, and wireless communication...
[1]
Charles Lave,et al.
EFFECT OF THE 65 M.P.H. SPEED LIMIT ON HIGHWAY SAFETY IN THE U.S.A. (WITH COMMENTS AND REPLY TO COMMENTS)
,
1992
.
[2]
Markku Salusjärvi.
THE SPEED LIMIT EXPERIMENTS ON PUBLIC ROADS IN FINLAND
,
1980
.
[3]
G A Varkevisser,et al.
PILOT SPEED MEASUREMENTS INSIDE BUILT-UP AREAS. INDICATIVE MEASUREMENTS IN THREE BIG DUTCH CITIES, PERFORMED ON FOUR ARTERIAL ROAD TYPES
,
1994
.
[4]
H-L Oei.
EFFECTIVE SPEED MANAGEMENT THROUGH AUTOMATIC ENFORCEMENT
,
1994
.
[5]
D Solomon,et al.
Accidents on main rural highways related to speed, driver, and vehicle
,
1964
.