A route includes a tunnel with a posted hazardous-load restriction and a separate low-clearance warning. Your loaded vehicle may be affected by both. What is the correct planning decision?

1. Enter slowly and decide inside the tunnel
2. Verify cargo classification, vehicle height, legal access, and alternate routes before reaching the tunnel
3. Ignore the hazardous-load sign if the height is acceptable
4. Ignore the height sign if the cargo is not hazardous