When you park a car facing downhill, you should:

• Turn your front wheels toward the curb (kerb). This ensures that if the car starts to roll, the front tire will hit the curb and stop the car from moving further downhill.
• Engage the parking brake to lock the rear wheels and prevent the car from moving.
• If you are driving a manual transmission car, leave it in reverse gear, which helps hold the vehicle in place if the parking brake fails.
• If driving an automatic, place the car in 'Park.'

These steps together maximize safety and prevent the car from rolling downhill into traffic or causing damage.