When facing a heavy load uphill, what should a driver do?

When driving with a heavy load uphill, it is essential to shift into a lower gear. This action allows the engine to generate more torque and maintain power, which is crucial for overcoming the uphill gradient. A lower gear helps prevent the engine from straining and stalling, as it engages the engine more effectively with the increased demand of climbing the hill.

By using a lower gear, the vehicle can maintain a safer and more controlled speed, which is particularly important with heavier loads, as these can have a higher inertia and may be more difficult to control. Additionally, the lower gear provides better acceleration and helps prevent the vehicle from rolling backward if it begins to slow down while ascending. Operating a truck in a manner that matches the load and terrain is key to safe driving practices, making this approach the most effective in the given situation.

Other options, such as shifting into a higher gear, maintaining speed, or using cruise control, could lead to loss of power and control, especially under the stress of driving uphill with a heavy load.