So in most tunnels they have strange lighting setups inside. There are usually 3-5 circuits that come on at random times. In the middle of a tunnel there is usually one or two circuits.
Why do they have these setups.
So in most tunnels they have strange lighting setups inside. There are usually 3-5 circuits that come on at random times. In the middle of a tunnel there is usually one or two circuits.
Why do they have these setups.