DOT Inspection Service
The myriad of regulations can leave your head spinning! Our years of experience have given us an extensive working
knowledge of what is required by law. Following all federal guidelines, we will make sure your business avoids unexpected delays.
Emissions Diagnostics & Repair...
We can diagnose the cause of excessive emissions and avoid fines and delays! There are many reasons for emissions failure and often it is due to complicated systems. We can inspect and service your commercial trucks and fleet so you avoid fines and unneccessary 'off road' time that leads to a loss of business!
Diesel Emissions Program Area
The full counties of Boulder, Jefferson, Broomfield, Denver, and Douglas, and the partial counties of Adams and Arapahoe, Larimer, Weld, and ElPaso.
Gross Vehicle Weight Rating (GVWR)
Heavy Duty diesel vehicles - GVWR of 14,001 lbs. or more
Light duty diesel vehicles - GVWR of 14,000 or less
Temporarily Exempt Vehicles
- Heavy duty and light duty diesel vehicles are exempt from emissions for the first four model years. After the exemption period, vehicles are required to be tested as instructed in Vehicle Emissions Testing Cycles below.
Vehicle Emissions Testing Cycles
Light duty diesels that are 2003 and older are required to have an emissions test every year.
Light duty diesels that are 2004 and newer are required to have an emissions test every 2 years.
Heavy duty diesels that are 2004 and newwer are required to have an emissions test every 2 years.
Heavy duty diesels that are more than 10 model years old are to have an emissions test every year.
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