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Difficulty: MediumRight-of-Way Rules at Intersections

Four vehicles are approaching a four-way stop intersection under different conditions. Arrange the vehicles in the correct order of right-of-way priority, from FIRST to proceed (1) to LAST to proceed (4).

  1. 1An emergency vehicle (ambulance) with active sirens and flashing red lights.
  2. 2A sedan that arrived first at the intersection and came to a complete stop.
  3. 3A pickup truck proceeding straight that stopped simultaneously with an oncoming left-turning SUV.
  4. 4An SUV intending to turn left across traffic that stopped simultaneously with the pickup truck.

Answer

The correct order from first to proceed to last to proceed is: 1) Emergency vehicle with active siren, 2) Sedan that arrived first, 3) Pickup truck proceeding straight, 4) SUV turning left.
Right-of-way at an intersection follows a strict hierarchy: active emergency vehicles proceed first, followed by non-emergency vehicles in order of arrival, and finally resolving simultaneous arrival ties by giving straight-through traffic priority over left-turning traffic.

Step-by-Step Solution

1
Identify top priority vehicles in emergency status
The emergency vehicle with active sirens and lights is placed first.
Traffic laws mandate that all drivers immediately yield right-of-way to active emergency vehicles regardless of standard arrival sequence.
2
Determine right-of-way by arrival sequence for standard vehicles
The sedan that arrived first and completed its stop is placed second.
At four-way stop intersections, the first vehicle to come to a complete stop has right-of-way over vehicles arriving later.
3
Resolve priority between simultaneous arrival vehicles
The straight-bound pickup truck proceeds third, followed by the left-turning SUV in fourth place.
When opposing vehicles stop simultaneously, straight-through traffic takes priority over left-turning traffic, which must yield before crossing oncoming travel lanes.

Key Concept

Intersection Right-of-Way Hierarchy and Turning Rules
Estimated Time:1m 30s
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Topics

Right-of-Way Rules at Intersections

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