Heavy traffic: "make a corridor for emergency vehicle access"
in some countries it is mandatory to make a corridor for emergency vehicle access (According to Wikipedia: Austria, Czech Republic, Hungary and Germany) when you are stuck in heavy traffic. Although there are a lot of campaigns on building a "Rettungsgasse" in Germay, a lot of people still don't do it, potentially endangering the life of the victims of accidents.
I suggest adding the recommendation to form this corridor to the alert for heavy traffic and standstill.
Great idea. 5 Minutes ago i was making almost the same suggestion about rescue alleys / Rettungsgassen.