Question

why railway crossing is built on road on the train tracks​

Answer 1

Answer:

The basic signal consists of flashing red lights, a crossbuck and a bell, attached to a mast. At most crossings, the signals will activate about 30 seconds before the train arrives. In some countries (such as the Czech Republic or Slovakia) there is also flashing white light, which means it is safe to cross.

Answer 2

why the railway crossing is work on roads on the train tracks