Study anywhere

Pre-trip knowledge. Built for your pocket.

Study pre-trip topics on the go and use the Diesel Xtrem Student Portal for assigned lessons, quizzes, progress tools and the free HazMat Preparation Course included with every purchase.

Student Login Install Free Web App

A study system, not a wall of text

Learn in sections. Check your understanding.

Each module breaks a major inspection area into focused review, practice questions and progress checkpoints.

Mobile-friendly lesson structure
Immediate quiz feedback and explanations
Progress saved to the authorized student account
Owner-controlled module access
Read-aloud support on compatible devices
Free HazMat Preparation Course access after any purchase

Official-material reminder: Modernized Vehicle Inspection and Basic Control Skills protocols may apply to your test. Always use the current commercial driver manual, official licensing-agency materials and your instructor's direction.

Protected student curriculum

Focused pre-trip study modules.

Safe Start / In-Cab

In-cab inspection, safe start procedures, dashboard indicators, air gauges, emergency equipment, and controls.

Study Module

Air Brake Test

Complete air brake system test including governor cutout, leakage test, low-air warning, spring brakes, and service brake test.

Study Module

Lights Operation Check

Step-by-step exterior lights check including signals, low and high beams, hazards, brake lights, and rear lights.

Study Module

Front of Vehicle / Engine Area

Inspect the front of the vehicle, headlights, signals, and the full engine compartment including fluids, hoses, and steering components.

Study Module

Suspension / Brakes / Wheels

Inspect leaf springs, air bags, shock absorbers, brake components, tires, rims, valve stems, and lug nuts.

Study Module

Side Vehicle

Inspect mirrors, fuel and DEF tanks, battery box, tractor frame, and cross members from the side of the vehicle.

Study Module

Coupling System

Inspect the full coupling system including air lines, gladhands, electrical pigtail, fifth wheel, kingpin, locking jaws, and release arm.

Study Module

Trailer / Rear of Trailer

Inspect landing gear, trailer clearance lights, reflective tape, frame, rear lights, license plate light, DOT bumper, and rear components.

Study Module

Emergency Stop / Railroad Crossing

Practice the full spoken procedures for emergency stops and railroad crossings.

Study Module

Student Login Get Access Help

Install the student app

Free browser installation for quick access while you are on the go.

Install Free

Student access

Unlocked after a verified purchase.

Use your Diesel Xtrem Student Portal credentials to open assigned lessons, quizzes, progress tools and the HazMat Preparation Course included with your purchase.

Open the Student Portal·View official federal CDL resources