To park a vehicle on a **sufficiently lit urban road**, it is not necessary to leave any type of lighting on. This is because the vehicle's lights, such as the **position lights**, are mainly used in low visibility situations, such as driving at night, passing through tunnels, or on dark days with little natural light.

- On a **well-lit urban road**, visibility is adequate, and the use of additional lights to signal the presence of the parked vehicle is not required.
- Position lights are turned on when the vehicle is moving and in low visibility conditions, or when the car is stopped on a poorly lit road due to a breakdown. However, on a well-lit urban road, these conditions do not apply.

Therefore, on a sufficiently lit urban road, it is not necessary to leave the lights on when parking.