Level I Inspection (I + 1): What Every Carrier Needs to Know

Road safety in North America is not optional. That’s why the North American Standard Level I Inspection, also known as I + 1, is one of the most thorough procedures in the transportation industry. It evaluates both the driver and the vehicle to ensure full compliance with international standards.

In this article, we break down what it involves, why it matters, and how you can prepare your fleet.

What is a Level I Inspection?

The Level I Inspection consists of 37 steps performed by inspectors certified by the Commercial Vehicle Safety Alliance (CVSA). It includes a complete review of the vehicle’s mechanical condition and the driver’s credentials and documentation, along with any hazardous materials that may be on board.

Who conducts the inspection?

Certified law enforcement officers at the local, state, federal, or provincial level in the U.S., Mexico, and Canada. These inspectors are trained to issue or remove the CVSA decal, which certifies that the vehicle has passed the inspection.

What is inspected?

Key areas include:

• Driver’s license and qualifications

• Hours-of-service log and records

• Vehicle brakes, lights, tires, steering, and suspension

• Coupling devices and cargo securement

• Fuel and exhaust systems

• Carrier identification

• Presence of hazardous materials (if applicable)
  

What is the CVSA decal?

The CVSA decal is issued when a commercial vehicle passes a Level I, V, or VI inspection with no critical violations.

• The color of the decal indicates the quarter it was issued.

• It is valid for three months.

• It helps reduce redundant inspections during that period.

Important: If any critical violation is found, the vehicle may be placed out of service until all issues are resolved. In this case, no decal is issued.

How to prepare your fleet

1. Conduct pre-trip inspections to ensure your units are in top condition.

2. Train drivers on inspection procedures and documentation requirements.

3. Maintain accurate and current records, including logs and inspection reports.

4. Address any violations promptly to avoid repeat infractions or out-of-service orders.
   

What about Mexican carriers?

Carriers based in Mexico who operate beyond the commercial zone must display a valid CVSA decal during their provisional operating authority and for three years after receiving permanent operating authority.

Why this inspection matters

The Level I Inspection is a critical step toward safe and compliant operations across North America. Meeting these standards not only helps prevent accidents and fines but also enhances your company’s credibility and efficiency.

Being prepared means fewer delays, fewer risks, and more peace of mind.