An interesting study.
There seem to be too many variables for a conclusive result. One that
addressed in a study in a single location is climate: as other
have said, snow and overcast conditions will make a significant
There's another study at http://www.officeofroadsafety.wa.gov.au/Research/
As the URL suggests, it has been done in Western Australia, a lightly-
and mostly hot, dry and sunny area.
The difference between silver and white is insignificant, but both rate
The worst colours? WA landscape colours.
I'm shopping for a car. It won't be brown.
Competing interests: No competing interests