A sign prohibits vehicles over 7.5 tonnes maximum gross weight except for access. Your 18-tonne vehicle needs to deliver within the restricted road. What is the correct approach?

1. Use the road only if the delivery genuinely requires access and no safer permitted route is available
2. Ignore the sign because all delivery vehicles are exempt
3. Use the road if the vehicle is empty after the delivery
4. Drive through at night because the sign does not apply then