The roads are winding, winding and there are many areas with limited visibility. The question is why hilly roads often curve along the slopes instead of being a straight line to the top, why not make a straight line to the top of the mountain?
Once upon a time, when people wanted to build a road to the top of a mountain or a hill, a group of prospectors would lead a donkey or mule up the steep slope of that place.
The roads up the mountain are never straight.
A donkey or mule will never go to the top by the shortest straight path. Instead, it instinctively chooses a path with a moderate slope, similar to the maximum slope we consider safe for a steep path (between 8 and 10 degrees).
Explorers would then hammer the ground to mark where the animal had just passed, measure the distances of the marked places, draw them on a map, and begin sketching the path. selected for future construction.
When the probe feels that the animal has gone too far from its original target destination, or when it encounters impassable obstacles, they will bring it back. The animal will now choose to go down the same slope as it went up, but in the opposite direction. The point where the donkey or mule changes direction is called the sleeve bend .
A car with a strong engine can easily climb a very steep road, but a truck carrying tons of goods or a bus full of passengers cannot. Moreover, the road with a steep slope will make going down extremely dangerous .
8 degrees is the prescribed slope of most important roads.
Good preparation for the trip will make you feel more secure and it also helps you to reduce unwanted risks; It is necessary to ensure and check some of the following devices: Make sure that the brake fluid and the transmission fluid are adequate, the last time it was changed within the safe recommended time. Brake fluid, over time, loses moisture and contaminates, reducing the boiling point. When using the brake often, the oil boils, losing the brake effect. In addition, it is necessary to check the surface, tire pressure and always pay attention to have a spare tire.
Due to the characteristics of the hilly road, there are many continuous bends, so you almost have to constantly steer with the steering wheel. Estimating the sharpness of the bend to steer just enough is an important factor to help the car run stably, not roll and always stay on the specified road.
Especially note that drivers often have the habit of rubbing the steering wheel with one hand, this is extremely dangerous when driving on a mountain road because sharp turns require a greater force to hold the steering wheel than on a flat road.
The fact that you run evenly on the accelerator and limit the brake is to maintain the vehicle’s speed as stable as possible, from which the average speed of the journey will be much higher than the way of speeding and braking. . Maintaining speed here can be understood as the ability to keep the speed within the limit that you can safely control. That means that everyone’s ability to keep their speed will also be different, and the average speed will also vary depending on the ability to drive.
The secret of climbing the pass is “raising momentum”. By rhythmically with the accelerator, try to always keep the speed no less than 35km/h, the engine rpm is not less than 1500 rpm.
For sleeve bends, the cornering speed must be lower, but you should still keep the engine rpm, observe before entering sharp turns so that you do not have to stop to avoid vehicles in the opposite direction. Note that if traveling in groups, you should stay far enough away to not have to brake suddenly.
When going downhill, the heavier the vehicle, the greater the inertia, the descending speed will increase rapidly and exceed the ability to control driving if the vehicle is still in D mode (automatic transmission), or high gear levels (speed transmission). floor). Intuitively, you will brake, brake a lot and hold for a long time will lead to the temperature of the brake pads rising too high, then the ceramic brake pads will lose braking effect.
The optimal solution at this time is to brake to slow down and shift to low gear (1,2,3 for manual transmission cars; or D1. D2, S low gear for automatic transmission cars), this causes the engine to slow down. vehicle speed, can safely downhill, easy to control. Note always maintain the speed within a safe threshold, absolutely do not let the car drift too fast and then stop, this way of running can cause significant damage to the brake system.
Most steep mountain passes are narrower than national highways. Some drivers tend to stick to the middle of the road to run, but this technique will not be safe if the road has many moving cars, causing discomfort to other cars, bad cases leading to accidents without timely handling. , especially with vehicles in the opposite direction when cornering.
When encountering fog, need to go slowly, observe more.
When encountering fog, it is necessary to go slowly, observe more, turn on the fog lights and always remember to stick to the road markings. Bad weather leads to loss of traction and can lead to landslides, so always be alert, can stop if you feel danger.
On steep slopes, low humidity can lead to altitude sickness and fatigue. Therefore, always provide the body with enough water to stay awake. Besides, the car also needs to be “awake” by filling up the fuel tank, because the density of fuel stations along the road is very little.
Going on a mountain pass requires a lot of concentration and the body of the car changes a lot, so it can easily lead to stress and fatigue, the driver should often stop to rest to stay awake to continue the next journey.