#33 When you are driving, if you see this traffic sign it means
There is a downhill section of road ahead. If you are driving a large vehicle you should change to a lower gear to control your speed.
There is a low place in the road. You should drive slowly and be ready to stop if the low place is filled with water.
The road slopes gently downward and upward ahead. You should continue at the same speed if the way is clear.