Under sections 144 and 163 of the Road Traffic Act, what offence does a driver commit by stationing a vehicle on a road between sunset and sunrise without a light?

1. None, provided the vehicle is fully off the carriageway
2. Stationing a vehicle on a road without a light between sunset and sunrise
3. None, provided the vehicle is moved again within 24 hours
4. Obstruction only, and only if another driver actually complains