A driver is hauling a sealed cargo container and suspects the weight exceeds the legal axle limits, but cannot verify the contents. What should the driver do?

1. Drive slowly to the destination and hope for no inspections
2. Weigh the vehicle at a certified scale and refuse to haul the load if it exceeds legal limits
3. Add extra tie-downs to compensate for the excess weight
4. Drive only at night when enforcement is less common