At narrowings on steep gradient sections, if there is no specific signage to that effect, the right of way belongs to the vehicle travelling in the... direction.
A)uphill, in all cases.
B)downhill, unless it could reach a passing place first.
C)uphill, unless it could reach a passing place first.Correct
On steep gradient sections that have no priority signage and where, due to their narrowness, two vehicles cannot pass each other, the right of way belongs to the vehicle travelling in the uphill direction, unless it could reach a designated passing place first.
Steep gradient sections are understood to be those with a minimum incline of 7 percent.