How to properly pass a speed bump. Equipment travel road irregularities

Due to speed bumps not suffer suspension car, especially the front suspension, you must master the correct technique they travel.

2015-11-17 21:07:58 56

speedspeed bumpsfront suspensionfront wheelsbrake pedalfront suspension springs

Due to "bumps" did not suffer the chassis of the car, especially the front suspension, you must master the correct technique they travel.

what are "speed humps

Speed bumps (IDN) or "speed bumps" are designed for forced speed reduction of the motor flux at uncontrolled pedestrian crossings, entrances to pedestrian and residential areas, near educational and cultural institutions. As a result, even those of drivers who were used to driving, not observing the speed limit, ignoring traffic signs and markings, are forced to slow down when approaching the "speed bumps". However, to slow down is not enough, artificial road roughness must still pass correctly.

a Little physics

While pressing on the brake pedal of a moving car at the point of contact of the wheels with the road surface occur braking force directed in the direction opposite to the motion. At the same time, the inertial force applied to the center of mass of the car, pulling the car forward. The resulting moment of forces tends to squeeze the front of the car down, and the rear part to lift up. As a consequence, the front suspension springs are compressed, the load on the levers and the bearings of naves of wheels increases. If at this point the front wheels overcome obstacles in the form of a speed bump, the front suspension of the car gets an extra kick from below – from road obstacles. It is not surprising that frequent and repeated, and even ignorant of the passage of a speed bump pretty soon suspension parts will wear out and become worthless.

travel Technology

Approaching road bumps in the form of a "speed bump" you need to slow down to about 15 km/h, and for 2 meters to the obstacle (line a) press on the brake pedal. In full compliance with the laws of physics the front of the car will hug the road surface, and spring front suspension compressed. Two feet from a speed bump (line b) it becomes necessary to remove your foot from the brake pedal. The front of the car lifts up, the spring front suspension unloaded and uncompressed position, gently taking the hit from the bottom at the moment of contact with road unevenness. After the front wheels pass road roughness, and back on it still will not stop that need by briefly pressing on the brake pedal lift up the rear of the car, unloading the rear suspension spring. As a result the car gently rear wheels will pass through the road block. Eventually the car easily and smoothly rolling over the "speed hump".

Complicated technique of travel

In the case where the obstacle in the form of speed bumps are detected late and slow to the recommended in the previous section of 10 km/h is not possible, you need to take a brake, and 2 meters to the obstacle, release the brake pedal, instead of pressing on the gas. As a result the vehicle's centre of gravity moves back and when passing obstacles the front wheels front suspension springs are decompressed and the machine easily without hitting, pass a speed bump with its front wheels. Only the front wheels pass the obstacle, foot off the gas pedal you need to remove and tapping the brake to lift the rear part of the machine. From this dynamic maneuver looks like jumping over the obstacle and requires experience and certain skills.

Travel obstacles on the diagonal

If road conditions allow, "speed bump" you can go a little diagonally, providing alternate travel wheels through the road block. When this technique of travel the machine will not rise above the obstacle, and only slightly swaying from side to side, as if it was gently moving through the "speed bump". And most importantly – during the execution of the maneuver of travel, road speed bump do not lose control over the traffic situation ahead of the vehicle. After all, these bumps were not created to annoy you or give you the opportunity to hone driving skills, but solely to protect pedestrians that are in the area, fenced "speed bumps". Good luck to you! No nail, no wand!


Related articles