Translations:TrainCarts/Signs/6/en

Signs can either be powered by or activate Redstone themself.
Some signs may require you to power them using Redstone. Some common examples are stations or spawners. In order to power them will you just need to put a power source next to the sign. A power source can be Redstone dust (Doesn't require to point into the sign), levers, buttons, etc.
If you want to have the sign to be always active without the usage of Redstone can you either add an exclamation mark (!) or a plus (+) in front of train or cart, becoming [!train] and [!cart] respectively. Note that both will alter how the sign may output a Redstone signal itself. For the exclamation mark will the input and output be inverted and for plus will it be constantly active while ignoring any outside Redstone input.