| Location (state) | Vehicle weight (lb) | 1984 limit dB (A) @ 50 ft |
| California | £10,000 | 80 |
| Colorado | <6000 | 84 |
| Mayland | £10,000 | 80 |
| Nevada | <6000 | 84 |
| Florida | £10,000 | 80 |
| Washington | £10,000 | 80 |