Here we go:
A chicane is an artificial feature creating extra turns in a road, used in motor racing and on streets to slow traffic for safety. Chicane comes from the French verb chicaner, which means “to quibble” or “to prevent justice.”
And here’s an example of one, in the Presidio on Washington Boulevard near Nauman Road by base housing:
Click to expand
(One assumes that area fire departments would simply drive over these chicanes on Washington Blvd. in an emergency)
Someday I’ll drive through this chicane in a car – it’s on my bucket list.