When should the parking brake be used on a snowmobile?

Using the parking brake on a snowmobile is essential when stopping on slopes to prevent the snowmobile from rolling or sliding away. Slopes can create conditions where gravity may cause the vehicle to move, even if the engine is off. Engaging the parking brake ensures that the snowmobile remains securely in place, thus enhancing safety for the operator and preventing potential accidents.

In contrast, using the parking brake while traveling downhill could lead to unintended complications, as it might affect control while navigating steeper terrain. While it is generally advisable to engage the parking brake whenever parked, the context of stopping specifically on slopes highlights the importance of preventing movement in potentially hazardous conditions. Flat surfaces do not typically require the same caution, as the risk of rollback is significantly reduced when the snowmobile is on level ground.