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Hazardous Journey

Car colour and risk of car crash injury: population based case control study

BMJ 2003; 327 doi: (Published 18 December 2003) Cite this as: BMJ 2003;327:1455

Not definitive but interesting

I've no useful evidence to add to your study but
can offer 4 suggestions:

1) try to factor out effects of manufacture and car
models - get data for different coloured cars of the
same model, model year and equipment level. Adjust
for mileage differences.

2) which car was in motion during the accident - both or
just one - which coloured one(s)?

3) Which coloured car(s) was in view or not in view of
the other drivers in the accident?

4) factor in whether there is a difference in human
depth and / or motion sensitivity when subjects view
objects of various colours. If your results are
meaningful, it may be that silver colour objects are
perceived as being closer and / or in motion more so
objects of other colours.

My car is silver.

Competing interests:
None declared

Competing interests: No competing interests

28 December 2003
Michael Low
writer, luthier, ex-researcher