In a somewhat surprising comment Yes Insurance have asked for fire engines to be yellow rather than the traditional red.
The request comes following the insurers research in to vehicle colours and how safe they are, research that supplements other studies already carried out. Yes Insurance found that lime yellow is one of the safest colours on the road thanks to its high visibility both at night and day plus in poor weather, when it cuts through poor visibility better than any other.
A further reason Yes Insurance asked for the red paint to be swapped on fire engines for yellow was that red can often be perceived as black when it is dark, plus red is quite hard to see from drivers peripheral vision. These two issues are quite serious for an emergency vehicle that is often out when it is dark and also tries to get through traffic from all angles.