| You should assume that this posted clearance is correct | |
| Driving close to the center line will get you a few more inches of clearance | |
| If you`re carrying a lighter load your required clearance may be more than you think | |
| If you`re carrying a heavier load your required clearance may be more than you think |
| Federal and state inspectors | |
| Maintenance mechanic | |
| Driver | |
| Trucking company |
| Within the first 25 miles of the trip and every 150 miles or 3 hours thereafter | |
| Within the first 25 miles of the trip and every 200 miles or 4 hours thereafter | |
| Within the first 25 miles of the trip and every 100 miles or 2 hours thereafter | |
| Within the first 25 miles of the trip and every 250 miles or 5 hours thereafter |