Final answer:
On an upgrade without a curb on a two-way street, front wheels should be turned towards the street to prevent the vehicle from rolling into traffic.
Step-by-step explanation:
When parking on an upgrade on a two-way street where there is no curb, you should leave your front wheels turned towards the street. This way, if your vehicle starts to roll, it will roll into the sidewalk and stop, rather than rolling into traffic. It's crucial for safety and is often required by law to ensure that unattended vehicles do not become hazards to other road users.
When parking on an upgrade on a two-way street where there is no curb, it is important to consider the direction of the grade. If the grade is uphill, you should turn your front wheels away from the curb or edge of the road. This means that you should turn your wheels to the left. If the grade is downhill, you should turn your front wheels towards the curb or edge of the road. This means that you should turn your wheels to the right.