Notes for turning and turning of semi trailer

Notes For Turning And Turning Of Semi Trailer

1.Flat road turn

Semi-trailer flat road driving, because the road resistance is small, it is easy to improve the speed, when the running speed is higher turn will produce a larger centrifugal force, sharp turn will produce greater centrifugal force, which will not only affect the car ride, serious will cause rollover accidents.

Therefore, according to the speed and radius of curvature of the curve, the accelerator pedal should be relaxed before entering the curve to make the car slow down smoothly.

When turning, we should choose the right time and speed according to the width of the road, the radius of the bend and the traffic situation. We should pay attention to the coordination of the steering wheel speed and speed, and try to avoid braking and shifting gears in the process of turning.

2.Turn up hill

The uphill resistance is large, the semi-trailer driving speed is slow, the centrifugal force is small, so in case of circumstances, timely release of the accelerator pedal, generally can control the speed.

But uphill driving speed is slow, especially long steep slope avoidance ability is poor, to drive on the right as far as possible, in order to avoid accidents.

After passing the top of the curve, cut back to the outside of the curve, confirm that the road is safe, step on the gas, and finally drive out of the curve quickly against the outside of the curve.

3.Downhill corner

When passing the downhill curve, the center of gravity of the semi-trailer moves forward, the forward inertia increases, the speed is higher, and the centrifugal force increases when turning, so as to decelerate in advance.

After passing the top of the curve, cut back to the outside of the curve, gently throttle, and finally pull out quickly against the outside of the curve.

4.Blind corners

Because you can’t see the traffic at the end of the curve, you first have to slow down, and you can’t drive the way you would on a normal curve.

When passing the left turn, the semi should run along the outside of the turn;

When passing the right turn, the semi should follow the inside of the turn, changing lanes and correcting direction once it sees the exit of the turn.

Compound corners and Safe corners

Compound corners, safe corners are all about securing the last corner so that you can get off the corner quickly at the last exit.

First of all, reduce the speed, into the first corner of the entrance, in each corner, according to the first outside after the inside of the outside method of driving, during which you can add a little throttle, through the last corner, once you see the exit of the bend can be corrected, fully accelerated, straight from the bend.

Semi-trailer as a large truck, there are some driving regulations are very different from small cars, generally in the semi-trailer driver training is to point out how to avoid semi-trailer in the turn caused by violations

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5.Precautions for turning a corner


1.some common-sense error, “ban ban left” crossing back, in motor vehicles has ban back or left turn signal, the location of the marking is not run, some owners think only ban left without switching at the junction of symbol and allowed to run, but this is a wrong, unless the intersection is generally has special instructions,
As long as there is no left turn at a junction, it also means no u-turn.

2.Semi-trailer vehicles shall not turn around at railway crossings, crosswalks, Bridges, sharp bends, steep slopes, tunnels or dangerous sections. It should be noted that the crosswalk mentioned here refers to the crosswalk in the middle of the road.

3.the centerline to yellow when the solid line prohibits run, in addition to the crossroads, if there is no no u turn in the road signs and lines, also allows turn, need special attention is that the road centerline if it is a solid line, whether a single yellow line or double yellow line, means “no u-turn”, the driver also note that the individual road marking with nakedness “yellow line”,
A root for solid lines in the double yellow line, the other as the dotted line, do not pass this on behalf of the solid line side, switching, and dotted line side to allow overtaking, switching, when semi-trailer driver training will have corresponding traffic rules and regulations, these need attention when driving at ordinary times, these tend to be a lot to do with driving safety.


1.Reduce speed to a reasonable level before entering the not brake in the middle of the turning process, simple out of control, resulting in smooth and even neutral into the corner, in neutral state the engine can not contain the wheel operation, all the braking and steering operation at this moment are greatly discounted.

2.Turn of town street or entrance gate.Slow down before turning and use a turn signal to indicate the direction of the trek.Do “one slow, two look and three pass” and pay close attention to the inside of the car turning to prevent risk attacks.

3.A turn at a fork in the road.When turning left, see the road ban sign clearly, turn on the turn signal in advance, and turn to the left side of the road as far as possible..When turning right, turn on the turn signal early, turn slowly, and pay attention to the entry and exit views.

4.A turn in thick early as possible to open the front small lights and fog lights..Use the horn to prompt the attention of other vehicles.Move slowly and prepare for braking at any time.

8.Turn at a steep slope.Observe the width of the lane in advance and try to prevent turning after reversing a car.Change the hand gear into low speed gear first to prevent shifting in turning.When approaching a curve, slow down and honk slowly.


When we drive in curves, we should be more careful to observe the dynamics of the opposite traffic line and be more limited in speed.

When a car turns, it is necessary to make the steering viewpoint appropriate, the steering timing appropriate and the reversing direction timely.

Do not take your hands off the steering wheel to avoid the risk of deviation.

When operating with one hand, the left upper arm should be clamped inward with force, and the two thighs should be slightly pressed upward to move the center of gravity downward to ensure the stability of the direction when operating with one hand.

The most important thing is to ensure your safety as well as the safety of the passengers around you.

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