CDL Test & Field Tools 2026

The CDL Permit Test 2024 Chrome extension offers a comprehensive platform to prepare for the Commercial Driver's License written exam. Featuring 800 multiple-choice questions across 9 essential topics—including Rules of the Road, Air Brakes, HazMat, Passenger Vehicles, Safe Driving, Combination Vehicles, Doubles and Triples, Pre-trip Inspection, and Tank Vehicles—it simulates the official test environment to boost your confidence.

Users benefit from detailed test results showing scores, time taken, and incorrect answers, along with a progress meter visualized via pie charts to focus on weak areas. Customizable options like test length and timer settings enhance the learning experience. The intuitive and minimalistic interface makes it easy to practice efficiently on any Chrome-enabled device.