I don't think it should matter on the speed of a single unit like the trolleys as long as they all go in the same direction and probably need to have the slowest in the front with enough sections so that the fastest can coast to a stop on a red signal from the block ahead. If you are trying to do station stops, it probably will require more electronics for more precise stops, I think one per block. They acted like relays only electronic, no points to chatter. Let us know how it goes?
Dave
