Here are some tips that truck drivers can use to help avoid jackknifing:

1. Slow down and be aware of road conditions: Jackknifing is more likely to occur on slippery roads, such as those that are icy or wet. By slowing down and being aware of road conditions, you can help to reduce the risk of jackknifing.

2. Use appropriate braking techniques: When braking on slippery roads, it is important to use the appropriate braking techniques. This includes using the brake and accelerator pedal in combination, known as “pump braking” or “modulating” to slow the vehicle down.

3. Properly adjust tire pressure: Make sure that the tires are properly inflated to avoid skidding or sliding. This will give more traction on road and the chances of jackknifing will decrease.

4. Maintain safe following distances: Following distances should be increased when driving on slippery roads. This will give you more time to react to sudden stops or changes in traffic.

5. Keep the trailer level: A level trailer will give you better stability and control. When loaded, make sure the weight of the cargo is distributed evenly across the trailer.

6. Avoid over-correcting: If the trailer does start to skid, avoid the urge to over-correct the steering. This can cause the trailer to swing around and jackknife.

7. Regularly inspect the vehicle and the braking system, ensure the brakes and tires are in good condition.

By following these tips and being aware of road conditions and your own driving habits, truck drivers can help to reduce the risk of jackknifing and increase their overall safety on the road.