Road safety – A study by Road Safety shows that motorcycles brake less hard than cars –

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Road Safety study shows that motorcycles brake less hard than cars

Road safety - A study by Road Safety shows that motorcycles brake less hard than cars -

In its latest video spot to raise awareness of the risks of the road, Road Safety emphasizes motorcycles – as it does every year when the good weather returns – by emphasizing overconfidence on two-wheelers, especially when braking.. To support its point, the government body unveils a study entitled "Braking …

In its latest video spot to raise awareness of the risks of the road, Road Safety emphasizes motorcycles – as it does every year when the good weather returns – by insisting on overconfidence on two-wheelers, especially when braking. To support its point, the government body unveils one according to which a motorcycle would take 3 meters more to stop than a car at 50 km / h.

Despite its pneumatic surface in contact with the ground less than that of a car (four wheels against two, the calculation is fast!), A motorbike brakes short, well helped by its contained weight and its powerful equipment, even over-calibrated for motorcycles top of the range or sports: large diameter discs, radial fixing 4-piston calipers, quality master cylinder and hoses. Without forgetting the combined ABS, increasingly light and efficient.

However, contrary to a commonly accepted idea, the distance necessary to stop at legal speeds would be greater on the handlebars of a two-wheeler than at the wheel of a car: this is what Road Safety concludes after a battery of emergency braking tests carried out by the Center for Studies and Expertise on Risks, the Environment, Mobility and Planning (CEREMA) and the Technical Union of Automobile, Motorcycle and cycle (UTAC-CERAM).

The Yamaha MT-07 taxed on braking by a Renault Clio

According to this study, carried out in good weather on the straight line of the Montlhery circuit (91), one would put on average "3 meters" more than a Renault Clio to stop at 50 km / h (20 meters against 16, 7). This already significant gap – roughly, this means that in town the motorcyclist stops behind a pedestrian crossing while the car stops before – would climb "at least 7.5 meters" at a speed of 90 km / h: 43.4 m for the Clio, 51.1 m for the MT-07 (see table below).

"To be representative of current use and sales, we have chosen the two models ranked first respectively for the car (Clio IV) and the motorcycle (Yamaha MT-07). Regarding the Clio IV, it was done on choice of a rather basic engine and finish "while" for the motorcycle, the ABS option was imperative ", explains the CEREMA.

These braking sequences – "a hundred in total" – were measured "scientifically" via a battery of sensors attached to the two vehicles, says Road Safety, specifying that it is "motorcycle driving professionals" who piloted the MT -07 loaned by Yamaha Motor France, fitted with and displaying 182 kg on the scale with the measuring equipment (without pilot). These testers also went behind the wheel of the Clio (rented new) so that the "data comparisons are more rigorous".

The study also shows that the perception-reaction time is identical between the motorcyclist and the driver of the car ("on average 0.45 seconds"), which is not surprising insofar as the it is not clear why the opposite would happen.

Especially since initiating a sudden braking in a car requires lifting the tip of the right foot of the accelerator to operate the central pedal, while performing the same operation on a motorcycle only requires extending two or three fingers on the right lever. , then tighten it.

Curb received ideas…

Thanks to this study, which would fill a "lack of precise documentation on the braking performance of the two types of vehicles", Road Safety intends to challenge what it considers to be a "received idea, frequently spread" among motorcyclists..

The government body hopes to provide bikers "with a better assessment of braking distances for their safety and that of other users, on motorcycles as well as on scooters". It remains to be noted that the MT-07 has no combined braking, which immediately penalizes it against the Clio.

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