Iowa CDL Hazardous Materials Test

About the Hazardous Materials Test

Study hazardous materials regulations, placarding requirements, and safe handling procedures.

Test Requirements

• Number of questions: 30
• Correct answers to pass: 24 out of 30
• Passing score: 80%
• Time limit: 40 minutes

Study Tips

• Memorize the nine hazard classes
• Understand placarding and marking requirements
• Learn proper loading and securing procedures
• Study emergency response procedures

What to Expect

This practice test simulates the actual Iowa CDL Hazardous Materials exam. Each question is multiple choice with four possible answers. You must score at least 24 out of 30 to pass.

The questions are based on the official Iowa CDL handbook and cover topics including:

• Federal Motor Carrier Safety Regulations (FMCSR)
• Iowa-specific CDL requirements
• Safe driving practices and procedures
• Vehicle operation and maintenance