Which way should the tires be turned when parking uphill without a curb?

When parking uphill without a curb, the tires should be turned to the right. This is because turning the front wheels towards the side of the road helps ensure that if the vehicle were to roll backward, it would roll off the road rather than into traffic. By positioning the tires this way, the vehicle is prevented from rolling downhill into harm's way.

Turning the tires to the left or keeping them straight does not provide the same level of protection, as they would allow the vehicle to roll into the lane of traffic if the brake were to fail. Thus, turning right is a safety maneuver that reflects responsible driving practices and adherence to parking regulations.