What procedure should be followed when starting on an uphill grade?

Using the parking brake to prevent rollback when starting on an uphill grade is the best procedure to ensure safety and control of the vehicle. This approach allows the driver to secure the vehicle in place while preparing to engage the accelerator. By keeping the parking brake engaged, the driver prevents the vehicle from rolling backward before the engine power can effectively push the vehicle forward.

This technique is especially important on inclines where gravity can pull the vehicle down the slope. Once ready, the driver can gradually release the parking brake while simultaneously increasing throttle to move forward. This careful coordination helps prevent accidents and enhances vehicle stability as you start up the hill.

Other procedures mentioned are less effective for starting on a grade. Accelerating quickly before releasing the brake may lead to a sudden and uncontrolled movement, raising the risk of rollback or loss of control. Shifting into neutral until the engine warms up is unnecessary and can compromise stability. Keeping the vehicle in gear until fully stopped might create additional challenges when managing the incline, particularly when needing to engage the throttle while the vehicle is on a slope.