Who NEEDS an Annual Tarping System Permit
You typically need this permit if you:
1. Operate Trucks with Fixed Tarping Systems
- Trucks equipped with permanent or semi-permanent tarping systems
- Systems that add extra height to the vehicle, often exceeding standard limits
2. Exceed Legal Height Limits
- Washington generally limits vehicle height to around 14 feet
- If your tarping system pushes the truck above this, a permit is required
3. Haul Materials That Must Be Covered
Common industries include:
- Construction (sand, gravel, asphalt)
- Agriculture (grain, silage)
- Waste and debris hauling
4. Make Frequent Trips Year-Round
- Carriers who regularly operate with tarped loads
- Businesses that would otherwise need repeated trip permits
5. Operate Commercial Vehicles on Public Roads
Permits are issued and regulated by the Washington State Department of Transportation.
Who Typically Does NOT Need One
You usually don’t need this permit if:
- Your truck and tarping system stay within legal height limits
- You use temporary tarps that don’t affect height significantly
- You only operate occasionally (a trip permit may be enough)
- You’re not engaged in commercial hauling
Key Insight
If your truck’s tarping system consistently increases vehicle height above legal limits, an annual permit is the most efficient and cost-effective way to stay compliant.