Great collection, a lot of nice signals, love the fiber optic signals, one day I hope to find that 18 inch fiber optic don't walk signal, I have a 12 inch don't walk signal
The model you show at 1:06 remains me of the pedestrian lights we used to have here in New Zealand up to the late 90s except ours had "Wait" and "Walk".
Traffic signals are designed for standard 1-1/2" pipe fittings (normally they'd use galvanized pipe, but I liked the look of black gas pipe better). Put an elbow, T, or coupler on the bottom of the signal, then screw in a nipple and bolt or a chase nipple to hold the signal to the pipe. Use a floor flange to bolt it to the wall.
Not sure what you mean "turned on safely". If you just want them to light up, treat them just like you would a table lamp- wire a plug so the hot ends of the mains goes to the button of the sockets, the other end goes to the neutral, just like you would a table lamp. Make sure the wires are good and preferably ground it too, unlike a lamp there's doors that can pinch wires. If you want it to sequence the easiest way is to buy a hobbiest sequencer from Lights to Go or one of their competitors on eBay.
+mdcastle oh, I meant safely, because I heard if there is to much power in one room, it can probably cause a fire, I was just wondering if it is safe for multiple traffic lights
