ARIZONA — More than 80 commercial vehicle enforcement inspectors are taking part in "Operation Southern Shield," an annual inspection and enforcement campaign targeting commercial vehicles along two major Arizona interstate corridors through Friday, February 27, 2026.

The operation runs from Tuesday, February 24 through Friday, February 27, covering Interstate 10 from Phoenix to the New Mexico state line and Interstate 19 from Tucson to the international border. The effort is led by the Arizona Commercial Vehicle Safety Partnership (ACVSP), which comprises Arizona Department of Public Safety Commercial Vehicle Enforcement troopers and Arizona Department of Transportation Enforcement and Compliance Division officers.

Additional participating agencies include the Pima County Sheriff's Office, the Marana Police Department, the Buckeye Police Department, the Goodyear Police Department, and the Federal Motor Carrier Safety Administration. Enforcement efforts are focused on hazardous moving violations, distracted driving, and seat belt violations, with special emphasis placed on motor carrier safety regulations including driver qualifications, hours of service, and overall safe operations.

Last year's Operation Southern Shield resulted in 910 commercial vehicle inspections and 2,614 driver-vehicle examination report violations. A total of 146 vehicles and 92 drivers were placed out of service for critical violations.

"The mission of the Arizona Commercial Vehicle Safety Partnership is to ensure safe, secure, and efficient commercial transport across Arizona," the ACVSP said.

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