The thing is that I really need to support those "flag lights" that are positioned around some of the race tracks, the ones which have blue, yellow, green, red flags (I guess, without looking) for race control - because they may be more visible than a flag.
They are just sitting there at the moment but obviously should be animated. If the code is implemented to make them work well, looking like lights that can be switched on or off (in a more general way than the existing start lights, which could also be improved in the process) then it seems quite a simple leap to implement some traffic light logic, for a crossroads etc. (if we were in the process of updating South City).