HOW TO PROPERLY TEST THE PARKING AND SERVICE BRAKES OF A TRUCK Here’s how to properly test your parking brake and service brake during a CDL exam or pre-trip: 🔹 Parking Brake Tug Test Vehicle in neutral Parking brake ON Start the engine and confirm air pressure is in range Put the vehicle in drive and gently apply throttle ✅ Vehicle should NOT move → parking brake is working 🔹 Service Brake Test Release the parking brake Drive up to 5 MPH Apply the brake and come to a smooth stop ✅ Vehicle sho
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HOW TO PROPERLY TEST THE PARKING AND SERVICE BRAKES OF A TRUCK Here’s how to properly test your parking brake and service brake during a CDL exam or pre-trip: 🔹 Parking Brake Tug Test Vehicle in neutral Parking brake ON Start the engine and confirm air pressure is in range Put the vehicle in drive and gently apply throttle ✅ Vehicle should NOT move → parking brake is working 🔹 Service Brake Test Release the parking brake Drive up to 5 MPH Apply the brake and come to a smooth stop ✅ Vehicle sho
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