Clear Traffic Jams

If you like to play with traffic, but sometimes gets stuck on narrow roads, this mod can help you.
You can simply press a key (Ctrl+T by default) to reset the traffic so you can go on your way. In multiplayer, only admin user can run this command.
==== CHANGELOG ====
New in v1.0.1.0
- Workers activate beacon lights when driving on roads
- Traffic can be automatically disable while a worker is driving on roads