Clean Truck Check in Audubon, IA

Nearest in-person tester to Audubon

The closest CARB-credentialed Clean Truck Check tester is Brown Nationalease in Urbandale, Iowa — about 60 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Audubon County

Clean Truck Check applies to heavy-duty vehicles that operate in California — including out-of-state trucks based here that run loads west.

Trucking establishments

27

Trucking employees

65

Source: FMCSA MCMIS carrier census, US Census County Business Patterns 2021.

Freight corridors near Audubon

Audubon sits on US-71, IA-141, IA-173 and IA-44. Trucks running these routes into California fall under CARB’s Clean Truck Check — Smart CTC lets them test remotely without leaving the road.

Source: OpenStreetMap (© OpenStreetMap contributors).

Nearby truck stops

OpenStreetMap-tagged truck stops, services areas, and HGV-marked fuel stations within 25 miles of Audubon. Useful for routing a service stop around your CTC test.

• Waspy's Truck Stop
  Waspy's Truck Stop · HGV: yes · ~1 mi
  View on OpenStreetMap →
• Waspy's Truck Stop
  Waspy's Truck Stop · HGV: yes · ~13 mi
  View on OpenStreetMap →

+3 more within 25 miles.

Source: © OpenStreetMap contributors. Last updated 2026-05-27.