Brake stone near Petrovice.

Brake stones are among the oldest road signs. A brake stone is a four-sided stone pillar with a depiction of a skid carriage brake handle, which marked the place where the charioteer was supposed to start braking the chariot to avoid hitting the horse's coat. The brake stones are still standing on the left side of the road, because until 1939, driving on the left was used in our territory. The pillar was often painted white and the brake relief was black.…