General Knowledge

The test every CDL applicant takes first.

General Knowledge covers the things that decide whether you keep a big vehicle under control: how far you need to stop, how much following space to leave, when the road is slick, what to do when a tire goes, and how the hours-of-service rules actually work. Every answer comes with a plain-language reason, so a wrong answer still teaches you something.

What the bank covers

• Stopping distance and speed management
• Following distance and space cushions
• Hazardous locations and railroad crossings
• Tires, load, and blowout response
• Skid and brake-fade recovery
• Hours of service and driver fatigue

What you get

• —Each test draws 50 questions from a 100-question bank written from the same material your state handbook covers.
• —The correct answer and the reason behind it, shown after you finish.
• —Unlimited retakes — every attempt pulls a fresh mix of 50 questions from the 100-question bank, with answer choices reordered too.
• —A result broken down by topic, so you can see which section is costing you marks.
• —A suggested 30-minute limit, so you can practise under the pace of the real test.

SheDrivesSheRides is an independent training business and is not affiliated with any DMV or state agency. Practice questions are written from widely published CDL handbook material — always confirm the exact requirement and current figures against your own state's handbook before you sit the test.