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Research in the United Kingdom has found that a 1 km/h reduction in the average speed can produce up to a three percent reduction in injury crashes.
The colour of a car plays a major role in determining whether the vehicle will be involved in a crash.
A study of 31,000 crashes in Sweden1 found that black cars were involved in 22.5% of the crashes even though black cars made up only 4.4% of the vehicle population.
This means that black cars were 5 times more likely to crash.
According to the same study, the safest car colour was pink.
Studies in the United States found that US Postal vehicles painted red, white and blue were involved in 27% fewer crashes than postal vehicles painted drab olive. The red, white and blue vehicles were involved in 622 crashes while the olive vehicles were involved in 849 crashes.
| How conspicuous is the colour of your car? According to Daimler Benz, the ratings for colour ranges from white - at 86% percent - down to black, dark red and dark blue at 4%. |
|
|---|---|
| White | 86% |
| Light Ivory | 71% |
| Aqua Blue | 71% |
| Yellow | 70% |
| Pastel White | 67% |
| Off White | 65% |
| Maple Yellow | 58% |
| Signal Red | 44% |
| Autumn Beige | 38% |
| Carnelian Red | 21% |
| Red Green | 21% |
| Beige Grey | 20% |
| Grey | 17% |
| Blue | 8% |
| Deep Blue | 5% |
| Dark Olive | 5% |
| Balck | 4% |
| Dark Red | 4% |
| Dark Blue | 4% |
Daimler-Benz undertook research (before flourescent paints were used) that concluded that white was the easiest colour to be seen. White rated 86% in their tests while black, dark red and dark blue rated 4%.
Many people think that particular colours are safer because they are more visible but it isn’t as simple as that.
The visibility of cars depends on the weather, road conditions the landscape and the time of day.
Generally bright and brilliant colours are much better than dark colours because they reflect a lot more light and can be seen from up to four times the distance of vehicles painted a dark colour.
The US National Safety Council defined the safest colour as "one that is highly visible in the widest range of lighting, weather and vision conditions"2
The Safety Council noted that white is the most visible colour in uniform lighting, but it has low visibility on a light coloured road in bright sunlight and in snow and fog.
A University of California study3 found that the colour of an approaching car influences the driver’s judgement about how far away it is. Blue and yellow made distant objects seem closest. The grey shades made objects seem further away.
| Colours of cars registered in New Zealand in 2004 |
|
|---|---|
| White | 453,585 |
| Blue | 451,659 |
| Red | 405,943 |
| Silver | 306,020 |
| Green | 306,020 |
| Grey | 233,502 |
| Black | 139,662 |
| Gold | 73,091 |
| Brown | 60,927 |
| Yellow | 23,719 |
| Purple | 23,666 |
| Cream | 17,248 |
| Orange | 8,665 |
| Pink | 8,345 |
| Total | 2,576,249 |
Research has also shown that
1Colour choice can be crucial. Road Ahead, Winter 1977, p2-4 2Colours
and visibility. New Zealand Road Safety, 29 (2), 1982. p16-17.
3Nathan, Robert A. What's the safest color for a motor vehicle?. Traffic Safety, Sept. 1969,
p13, 42.
A question of colour. Road Ahead, June 1990, p15.
Bain, Helen. Paint your wagon. The Dominion Post, 19 April 2003, pF3
Car color and safety : white paper. AAA Foundation for Traffic Safety. (http://www.aaafts.org/Text/Research/2001projects/carcolor.cfm)
Colour choice can be crucial. Road Ahead, Winter 1977, p2-4
Colour my wheels. Royalauto, May 2002, p42-45
Colours and visibility. New Zealand Road Safety, 29 (2), 1982. p16-17.
Does vehicle color influence the risk of being passively involved in a collision?. Epidemiology, 13 (6),
2002, p721-725
Nathan, Robert A. Whats the safest color for a motor vehicle?. Traffic Safety, Sept. 1969, p13, 42.
The safest colour for your car. New Zealand Road safety, October 1989, p17.
Vehicle colour & safety. Australian Road Research Board, 1989.
Last updated: 31 March 2005