U-turns in business districts are:
- Always illegal because they are dangerous.
- Legal whenever oncoming vehicles are not a hazard.
- Legal at intersections, unless a sign prohibits them. ✓
Answer: C. Legal at intersections, unless a sign prohibits them.
U-turns in a business district are legal at an intersection, unless a NO U-TURN sign is posted there.
Why this is the answer
The handbook lists business districts among the places where you must never make a U-turn, then gives the exception: at an intersection, or on a divided highway where an opening has been provided. It also says a green light or green arrow at an intersection allows the turn only when no NO U-TURN sign is posted. So inside a business district, an intersection is the place where a U-turn can be made, as long as no sign forbids it.
Why the other answers are wrong
- A. Always illegal because they are dangerous. — The handbook does not ban U-turns in business districts outright; it names intersections as a place where they are allowed.
- B. Legal whenever oncoming vehicles are not a hazard. — Clear oncoming traffic is not the whole test in a business district, because the handbook limits U-turns there to intersections and to divided highway openings.
Remember it
Picture the business district as a no-U-turn zone with one door open: the intersection, and only if no sign closes it.
Official handbook: California Driver Handbook (DL 600), Section 6: Navigating the Roads, p. 20