Final answer:
When parallel parking facing downward on a hill, turn your wheels towards the curb and apply the parking brake to prevent the car from rolling away and to ensure safety.
Step-by-step explanation:
If you're parallel parking facing downward on a hill, it is essential to use the correct wheel position and safety measures to prevent your car from rolling away. The correct action to take is to:
- Turn your wheels towards the curb. This ensures that if your vehicle starts to roll, it will roll into the curb and stop, rather than rolling down the hill.
- Apply the parking brake. Doing so will add an additional measure of safety in case the primary braking system fails. It's an important step that should always be taken when parking, especially on an incline.
By following these steps, you will enhance the safety of your vehicle as well as that of other road users.