Originally Posted by
unterhausen
The organizers were joking about that. They do require yellow vests, at least at night. A yellow vest is included in the registration fee. In fact, the reason there are so many yellow vests is that cyclists and pedestrians are required to have one and you are required to have one in your car.
As i understand it, you are required to have one for every passenger, which practically means one for every seat in the car. The things are ubiquitous. Car insurance agencies hand them out to their customers "for free."