Traffic signals at a four-way intersection are dark due to a power outage, requiring all approaching drivers to treat the intersection as a four-way stop. Four road users approach the intersection under the conditions described below. In what order must right-of-way be yielded, from the first road user permitted to proceed to the last?
- 1An active ambulance with sounding sirens and flashing emergency lights approaching the intersection
- 2Vehicle A, which arrived and came to a complete stop at the intersection before any other non-emergency vehicles
- 3Vehicle B, which arrived simultaneously with Vehicle C after Vehicle A, and intends to travel straight through
- 4Vehicle C, which arrived simultaneously with Vehicle B across from it, and intends to make a left turn across Vehicle B's lane
Answer
The correct sequence from first to last is: (1) Active ambulance with sirens and lights, (2) Vehicle A (first standard arrival), (3) Vehicle B (simultaneous arrival, going straight), and (4) Vehicle C (simultaneous arrival, turning left).
The correct order follows established statutory traffic hierarchies: emergency vehicles with active sirens/flashing lights supersede standard controls (1st priority); among standard traffic at an all-way stop, the vehicle arriving first holds right-of-way (2nd priority); and when two opposing standard vehicles arrive simultaneously, straight-through traffic has right-of-way over left-turning traffic (3rd priority before 4th priority).
Step-by-Step Solution
Key Concept
Right-of-way priority rules at all-way stop intersections involving emergency vehicle override, arrival ordering, and left-turn yield requirements.
Estimated Time:2m 0s