Sie Fahren 100 km/h Und Haben 1 Sekunde Reaktionszeit. Wie Lang Ist Der Bremsweg
Sie Fahren 100 km/h Und Haben 1 Sekunde Reaktionszeit. Wie Lang Ist Der Bremsweg
Sie Fahren 100 km/h Und Haben 1 Sekunde Reaktionszeit. Wie Lang Ist Der Bremsweg – You can calculate the braking distance regardless of your driving speed and without a calculator. For the calculation to work out, your car must be in optimal technical condition – from the brakes to the tires.
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What is the difference between braking distance and stopping distance?
To calculate the braking distance using a rule of thumb, you need to know that there is also a stopping distance. The stopping distance describes the distance covered during the braking maneuver and includes the reaction path. When we talk about braking distances, we mean the purely technical part.
If an obstacle appears in front of a driver that requires the vehicle to brake to a standstill, the following happens:
This part right up to here is part of the braking maneuver and is incorrectly called the reaction time. The term pre-braking time is correct.
When the brake pedal is depressed, the tires transmit an enormous force to the road surface, which is at least five meters per square second in cars. The anti-lock braking system (ABS) ensures the tires do not lock and can permanently transmit maximum braking power. Any ESP that may be present ensures that the vehicle stays in its lane and does not skid or leave its lane unintentionally. These systems remain in operation until the vehicle’s speed has wholly reduced, i.e., it comes to a standstill.
This second part of the braking maneuver is purely technical, called the braking distance. The distance the vehicle covers during the pre-braking time, and the braking distance together result in the stopping distance.
How long is the pre-braking time?
The regular, average pre-braking time is 0.8 to one second. But, the time it takes for a driver to respond to a traffic situation by braking can vary greatly. There are multiple reasons for this.
Young drivers with sufficient traffic experience and physically and psychologically healthy usually have a reaction time of 0.2 to 0.3 seconds. During this period, the brain recognizes an obstacle as a danger and, therefore, gives the command to change the foot from the accelerator to the brake pedal to press it. The time required to change the pedal and the response time until the brakes engage and decelerate the vehicle must be added to obtain the pre-braking time. That’s why this averages around 0.8 to one second.
However, numerous factors can influence the pure reaction time.
If you are frightened, the phenomenon of the moment of shock occurs. It blocks all logical actions and thoughts. A second of shock usually lasts up to 800 milliseconds.
Alcohol, drugs, and certain medications or combinations usually drastically reduce the ability to react. With blood alcohol levels as low as 0.3 per mille, vision is impaired, and alertness drops. From 0.8 per mille, the reaction time remains slowed by up to 50 percent. From 2.0 per mille, the ability to react remains almost completely switched off, and the driver only reacts mechanically, if at all.
Excessiveness is another factor. In 2020, around 1,400 accidents with personal injuries in Germany registered that could be attributed to overtiredness. In 2021, this number rose significantly to 1,500 accidents. Experts assume that up to 25% of all traffic accidents in Germany can remain attributed to fatigue.
Distractions from driving, such as using a smartphone or having a heated discussion with a passenger, can affect your ability to react. That’s why talking to the driver on trams and public transport buses is forbidden while driving.
Some diseases can negatively affect reaction time, especially those that affect the autonomic nervous system. Even in the early stages, Alzheimer’s and Parkinson’s, for example, can reduce the ability to react.
The age of the driver can play a crucial role. Older people often have a slower reaction time, which becomes noticeable from around 70. In addition, there is often confusion about road traffic. Older drivers cause significantly more accidents by ignoring the right of way, especially when turning left. It is also related to naturally declining eyesight and the fact that a person’s perspective reduces as they age.
How can I improve my reaction time?
You can train and improve your ability to react in a targeted manner. Cognitive games in which the action gets faster and faster as the game progresses are very suitable. Among online games, Subway Surfers is a recommended example.
To avoid negatively affecting the response time, adhering to specific basic rules is much more essential. Drivers should never get behind the wheel if:
You are under the influence of alcohol, medication, or drugs.
They are not well rested.
Suffer from visual impairment and high blood pressure.
You suffer from a disease that increases reaction time.
It is also not advisable to travel long distances without taking breaks. Anyone with a telephone conversation or a discussion with a passenger that requires their full attention should immediately head for the nearest rest area or parking lot.
Are there ways to compensate for poor response time?
To some extent, it is possible to compensate for a less good response time using technical means. Older road users, in particular, should drive vehicles of the latest design to minimize the risk of accidents. To compensate for the human source of error, the automotive industry has developed numerous assistance systems that serve exclusively for traffic safety. The most crucial assistance systems include:
Lane departure warning
Attention control
Fatigue detection
Distance warning
Collision warning, available for frontal collisions, approaching traffic and cross-traffic
Blind spot assistant
active lane departure warning
Emergency brake assistant with emergency call (for dangerous situations)
Emergency stop assistant with emergency call (if the driver no longer controls the vehicle because he fell asleep or perhaps suffered a heart attack)
Anti-lock braking system (ABS
ESP
Conclusion
Sie Fahren 100 km/h Und Haben 1 Sekunde Reaktionszeit. Wie Lang Ist Der Bremsweg – Calculating the braking distance is pure physics, but it can be quickly done in your head at any time using the rule of thumb. You can also use the result of this calculation to calculate the stopping distance using the reaction path. To keep the braking distance as short as possible, the vehicle must be in perfect technical condition. It is also important that you are always able to operate your car appropriately.
