Interesting in theory, will not work in reality! If the horse riders knew the road was full of bad / blind bends, why the hell do they put the rider & horse in danger by using the road? you will never stop some motorist over doing the speed limit, if the rider had any sense he / she would keep away from that road, Cyclist's, are we talking about the riders that think they are the world champions with the gear they wear? if they use the road, " Tax them"