On a mountain grade, which statement correctly describes who should back up when space is limited?

On a mountain grade, which statement correctly describes who should back up when space is limited?

• A. The downhill vehicle must back up.
• B. Both vehicles must stop and reverse one after another.
• C. The uphill vehicle has the right of way; the downhill driver should back up.
• D. The faster vehicle has priority.

Answer: (C)

On a mountain grade with limited space, the vehicle moving uphill has the right of way. The downhill driver should back up to allow the uphill vehicle to proceed, because backing uphill is much more difficult and hazardous due to gravity, limited space for visibility, and control. The downhill driver should slow, signal, and back away to a turnout or a wider spot safely, letting the uphill driver continue. This approach minimizes the risk of losing control or colliding, whereas forcing the downhill driver to back up or insisting both back up would create unnecessary danger. The rule helps maintain progress for the vehicle that has the harder time maneuvering in a tight spot.

On a mountain grade with limited space, the vehicle moving uphill has the right of way. The downhill driver should back up to allow the uphill vehicle to proceed, because backing uphill is much more difficult and hazardous due to gravity, limited space for visibility, and control. The downhill driver should slow, signal, and back away to a turnout or a wider spot safely, letting the uphill driver continue. This approach minimizes the risk of losing control or colliding, whereas forcing the downhill driver to back up or insisting both back up would create unnecessary danger. The rule helps maintain progress for the vehicle that has the harder time maneuvering in a tight spot.