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Featured services

• Smart CTC — Remote Clean Truck Check Device Testing (US + Canada + Mexico)
• CTCP — Mobile Testing (Southern California)

Reference + editorial

• What Is California's Clean Truck Check? — complete guide
• Compare Testing Options — In-Shop vs Mobile vs Remote
• 2027 Testing Changes — What Fleets Need to Know
• CARB Clean Truck Check Compliance Information

Blog

• Blog index
• 3 Ways to Test Your Truck for the Clean Truck Check

CTC-VIS guides

• CTC-VIS hub
• Setting up your CTC-VIS account

California regions

• Bay Area
• Central Valley
• Inland Empire
• Los Angeles Basin
• Sacramento Valley
• San Diego

States with active testers (41)

• Alabama · 3
• Arizona · 37
• Arkansas · 3
• California · 2568
• Colorado · 10
• Connecticut · 1
• Florida · 14
• Georgia · 12
• Idaho · 12
• Illinois · 56
• Indiana · 7
• Iowa · 4
• Kansas · 5
• Kentucky · 4
• Louisiana · 2
• Maryland · 5
• Massachusetts · 1
• Michigan · 5
• Minnesota · 4
• Mississippi · 1
• Missouri · 5
• Montana · 3
• Nebraska · 2
• Nevada · 32
• New Jersey · 5
• New Mexico · 3
• New York · 3
• North Carolina · 6
• Ohio · 18
• Oklahoma · 3
• Oregon · 24
• Pennsylvania · 11
• South Carolina · 4
• South Dakota · 3
• Tennessee · 8
• Texas · 35
• Utah · 19
• Virginia · 2
• Washington · 14
• Wisconsin · 1
• Wyoming · 1

States with no current testers (9)

These state pages still exist for Smart CTC coverage and future local listings.

• Alaska
• Delaware
• District of Columbia
• Maine
• New Hampshire
• North Dakota
• Rhode Island
• Vermont
• West Virginia

International

• International hub
• Canada · 29
• Mexico · 7