Prakhar Jain

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To reduce Rear Impact Collisions by almost 80% using Rear Flashing Brake lights

This idea is not original. I first saw it on Discovery channel where engineers from Mercedes demonstrated this for their new cars. According to their research and studies, the driver reaction time was reduced by 33% when flashing rear lights were used in sudden braking conditions. This in turn reduced the number of Rear Impact collisions by about 80%.

The system works by flashing the rear brake lights in the event of sudden braking or emergency braking. The flashing lights reduce the driver response time which in turn reduces the chances of collisions.
(For better understanding of the concept, you can view the videos and facts I have compiled on this page:

My concern is that even though this system costs just about 20$ per car, I do not find it being employed in almost any stock vehicle. Living in a developing country (India), I have never seen it. This is when India is a major market for automobile companies. Hence, as far as I believe, if this feature were to be a stock feature of car being manufactured in US or Europe, the same car would be sold in India and hence should have that feature when sold in India.

I believe, that when a feature has the capability of reducing the chances of a Rear Impact Collision dramatically it should be used as a standard feature in all cars manufactured in the present world.

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    Jul 2 2011: Gents,
    I am sure that the reason why Flashing brakes work is because they are unusual. They are noticeable by virtue of the fact that they are different.
    Once they become the standard, the effectiveness of the brake lights will be reduced to some where in the region of the current brake light effectiveness.
    Some kind of driver assisting brake will be more effective - but will have to be cheaper to create that the Volvo distance sensor and magnetic brake development. Just a suggestion.
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      Jul 13 2011: Blokeo, I believe you slightly misunderstood the explanation.

      The flashing brake lights are NOT substituting the current brake lights. They will be added to the current system. The Brake lights will flash ONLY in case of emergency braking. Not otherwise. So, usually you won't see brake lights flashing. But in the case of sudden braking (emergency / accident) you will see flashes of brake light.

      I suggest you read this -
  • Jul 1 2011: This say that the other vehicles gets alerted when the flashing brakes lights gets alarmed by its lighting.My idea is-
    "The magnetic braking can be introduced.The main feature is the braking system is basically made of magnetic components and inter connected to the engine.Beside the usage of normal brakes in ordinary conditions,When the ordinary brake failures then when the two vehicles come to collide and when the minimum distance between the two vehicles gets reduced then magnetic brakes gets activated automatically and as it is connected to engine,the engine stops working and vehicle automatically stops."
    I did not do any experiment on this and i got this idea by seeing this conversation.
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      Jul 1 2011: HI! Nice to see that my suggestion inspired another idea.

      But I am unable to completely understand your idea. Can you explain it a bit in detail.

      As for my suggestion, the mechanism targets the mind of the driver following the car. Hence the driver who is following gets alerted. It is a very low cost device on which tests have already taken place. Currently, these are available as separate units which can be purchased from Car mod dealer. But these are not stock fitted features. The actual advantage will only reflect when these are stock fitted in all cars.
      • Jul 2 2011: My idea upon magnetic breaking is "They are made up of magnetic materials an based on the property of magnetic field repulsion.These type of brakes cannot be manually operated.When the magnetic brakes are attached to the vehicle and interconnected to engine by using less amount of power generated from engine,They always generate their own constant magnetic field around the car (for example 60 cms )or vehicle for some minimum distance.When another vehicle come nearer to this then the intensity of magnetic field gets reduced and as i told above they generate a constant magnetic field,hence when the vehicle comes closer,the magnetic field intensity gets lowered than the constant value and automatically due to the interconnection of engine ,the vehicle stops.
        The basic concept is constant magnetic field intensity.If the both vehicles are connected with their magnetic brakes and in this case when the both vehicles come closer due to the impact of external magnetic field,there is a raise in intensity of magnetic field and the engines of both the vehicles stops working.This is my idea and this is not available in the market at present.But i think this also costs very low because the only extra thing added to the vehicle is constant magnetic field generator to the engine.If this is established then the probability of rash driving also gets decreased.