Traffic control

Traffic opportunities, issues.

.

 Ultimate Off-Road. San Bernardino Pass, Alps, Switzerland side (no injuries).

.

Napoleon crossed the Alps here and also had problems. Here, the motorcycle won. The Grand San Bernardino Pass.

Traffic-calming on a budget, Thal, Austria 

Just put out some square planters in the road, add pretty flowers, and make the cars go around; or stop for each other. This is Arnold Schwarzenegger's home town. The idea actually works. Economical, effective, pulchritudinous.
.
Here is Poland, telling you to slow down:

Poland. Budget-friendly speed non-trap

.

Here is Switzerland, telling you to slow down.

.

Switzerland. Budget-friendly speed non-trap.

That fake one aimed at the bikers, at an Altdorf repair shop.