Road Safety Facts
SPEED- Risk areas
- The speed increases violence shocks
- Speed increases the stopping distance
- The speed reduces the field of view
- The reduced speed traction vehicle
- The speed makes it impossible for some emergency maneuvers
- Slow down and save lives
RISK AREAS
Areas 30-60 km / h and 90 km / h are the areas where the risk of having a road accident is highest.
Areas 30-60 km / h
It is in these areas that has the highest number of accidents with serious injuries or minor injuries.
The risk of accidents can increase depending on the surrounding environment and coexistence with other road users.
A distance of 10 km, a driver traveling at 70 km / h instead of 60 km / h earns only 2 minutes at most. The rate is therefore not really worth! Moreover, if we take into account the traffic lights, most of the time, the gains are zero. How often we do we doubled by a driver in a hurry to find ourselves next to him at a red light a few moments later?
Areas 90 km / h
It is in these areas that the greatest number of fatal accidents occur.
In areas of 90 km / h, it is primarily the impacts of violence which makes them more deadly accidents faster you drive there and traffic is dense, sometimes with restricted visibility.
In short, areas of 90 km / h are areas where anything can happen! It must be remembered when we borrow these roads! We must also remember that the time saved by rolling faster than the limits allow not worth not worth it when you consider the risk of accidents that we run. Indeed, over a distance of 30 km, a driver traveling at 110 km / h in an area of 90 km / h earns no more than 4 minutes.
Respect speed limits, it is not trivial.
It's more than fine that is at stake. This is his life and that of others in question.
THE SPEED INCREASES VIOLENCE SHOCKS
The speed dramatically increases the severity of injury in an accident. Thus, the risk of being seriously injured or killed in a double impact between 50 and 70 km / h and quad between 70 and 90 km / h.
During a collision, the vehicle decelerates abruptly when the passengers are projected violently towards the point of impact. This is the energy released upon impact causing injury.
Kinetic energy is equal to 1/2 times the mass of the vehicle multiplied by its velocity squared (EC = 1/2 mv2). As well expresses this equation, the violence of the shock, or the energy released, is greatly influenced by the weight but especially by the vehicle speed.
• A shock at 50 km / h is equivalent to falling into the void from the top of a 3 storey building.
• At 75 km / h, it is equivalent to a fall of a 7-storey building.
• At 100 km / h, compared to a 12-story drop.
SPEED INCREASES THE STOPPING DISTANCE
A motorist sees an obstacle in his way. Time to react, he presses the brake pedal will travel some distance before stop his vehicle.
This is called the stopping distance.
The stopping distance is dependent on the reaction time and the braking time.
While the reaction time, that is to say the time from which the driver decides to brake and when it will be pressed the brake pedal, the vehicle will have traveled some distance.
The average reaction time is about 1.3 second. More vehicle speed, the greater the distance traveled during the reaction time will be long.
During the braking time the driver brakes to immobilize the vehicle. Over the starting vehicle speed, the greater the distance it will travel during this time will be long. Wear on the brakes and tires, the vehicle weight and the bad road conditions are all factors that can also contribute to increase the braking distance.
Contrary to popular belief, the anti-lock braking system (ABS) does not reduce the stopping distance. On a wet and dry roads, the braking distance of ABS is about the same as with conventional brakes. By cons, on gravel or mud, the stopping distance ABS brakes is longer than conventional brakes.
The increase of the stopping distance is not linear. As we can see, it more than doubles between 30 and 60 km / h and is almost tripled between 60 and 90 km / h.
It is mainly for this reason that the speed increases the frequency of accidents.
Always keep a safe distance, the more you ride faster, the space between your vehicle and the one ahead must be great!
THE SPEED REDUCES THE FIELD OF VIEW
A driver stopped or moving at very low speed normally has a field of view of 180 °.
At 90 km / h, the field of vision is reduced by half because the human brain can only process a limited amount of information at once.
However, the greater the vehicle speed is higher and the brain receives information. It is therefore forced to eliminate multiple device data.
Thus a motorist traveling at high speed may not see the child who is about to cross the street or the car that arises at an intersection.
THE REDUCED SPEED TRACTION VEHICLE
A motorist driving at high speed is more likely to lose control of the vehicle in curves because of the centrifugal force.
At high speeds, the vehicle adheres less to the road and skidding risks are greater. Indeed, from the beginning of the turn, the tires are crushed, the springs deflect and the suspension of the vehicle prevents it from being pulled out of the road.
If the speed is too high, the centrifugal force becomes larger than the frictional force of the tires and the vehicle skidding or tipping.
THE SPEED MAKES IT IMPOSSIBLE FOR SOME EMERGENCY MANEUVERS
A passenger vehicle, and more so a truck can instantly stop there, or make a change of direction at 90 °. But when the speed increases, the possible paths to avoid an obstacle, a cyclist for example, are reduced by much.
A car travels slower than car B
The trucks are harder to maneuver and slower to react than automobiles because they are bigger and heavier. To brake, the truck needs more time and space than cars.
Over 90% of driver input based on what he sees. 10 km / h less can make a difference
Here is a concrete example of the effects of speed that should make you think.
An overhead conductor at 50 km / h sees a pedestrian ... He can react, brake and stop in time if he is distant of at least 31.2 meters. This, with a reaction time of 1.3 second, in normal conditions on dry pavement.
Continues the same scenario, but with 10 km / h more.
If the pedestrian is always at 31.2 meters when the driver sees the wheelchair then 60 km / h it brakes, slowing the car, but at the moment of impact with the pedestrian, still traveling at 42 km / h. At this speed, the pedestrian will almost certainly invalid for the rest of his life, and maybe even death.
- 10 km / h less and he returned home unharmed him ...ed
- Some km / h less can sometimes mean the difference between life and death.
- According to some studies, a decrease of 3 km / h average speed of traffic would annually reduce by 15% the number of injuries and deaths.
SLOW DOWN AND SAVE LIVES
It was a beautiful and powerful car and it feels good driver, we can afford to drive faster without increasing the risk of accidents. Or time is short, we're late to drop the kids at school, pressing the accelerator pedal and exceed 10 km / h speed regulated, it's not so bad ...
Yet even an excellent conductor, with an excellent vehicle, does not escape the laws of physics. Whatever anyone says, as the speed increases, the frequency and severity of accidents also increases.
