When parking a vehicle with a trailer on an uphill slope, if you do not have wheel chocks, what should you do?
A)It is enough to leave reverse gear or first gear engaged.
B)Use natural elements as chocks, such as stones or pieces of wood.
C)Rest one of the front wheels against the curb, oriented toward the center of the roadway.Correct
When parking a vehicle with a trailer on an uphill slope without chocks, you must rest one of the front wheels against the curb, oriented toward the center of the roadway. This prevents the vehicle from rolling backward if the handbrake fails or the gear disengages. Leaving only the gear engaged or using stones as chocks does not provide sufficient safety.