Medic Rules

[◄Chuck►]

That however is not quite what I meant, sure in the video they're not using the siren because the current traffic situation does not require it in that very moment, but the difference is whether they MAY use it if necessary or not.
I've been reading a lot on this, at least the legal situation in Germany. If anyone is interested:
There exist two different kind of rights, the official German terms are not easy to translate but I will try,
1. Special rights, which grants (carefully) violating the road laws (ie speeding, wrong way, parking etc)
This one may be used silently, even in unmarked cars, there exists a directive though that orders the usage of blue lights if the vehicle is equipped.

2. "Right of a free road"
This one must be claimed by the usage of both sirens and blue lights at a time.
Other cars and whatever is on the road must immediately clear the road.

So, as for the view of a random civilian: Blue lights mean nothing but "caution" or "I may drive faster than you " or simply "I've got a blue light". Only Siren + blue lights together means "get off the road".

However, both of these "rights" do usually apply to ambulances as they wouldn't make much sense separated. I mean a car with blue lights but without siren, that takes part in the road traffic like any other vehicle would only distract and confuse others, and probably looks retarded too.