I am probably going to buy a few Atlas type signals, and right now we are not sure we want to insulate blocks to activate them. Some say I might have troubles with my TMCC or Legacy if I buy a Legacy system (or DCS). How does the infra red system work from Lionel or MTH? Can I put either of them along side the track, and then does the system sense the train as it goes by, rather than sense the train on coming like the Z-stuff does? Thanks for your opnions and or help in this matter.
Jeff