What is the A.A.S.H.O. method for calculating the braking distance (DF)?

The braking distance is the minimum distance a vehicle can stop safely be...

Question

What is the A.A.S.H.O. method for calculating the braking distance (DF)?

The braking distance is the minimum distance a vehicle can stop safely before hitting an obstacle in its path.
The A.A.S.H.O. method for calculating the braking distance consists of two parts: the distance traveled during perception and reaction time (D1) and the distance traveled during braking (D2).
The perception and reaction time (tr) is the time between the moment a driver perceives an obstacle and the moment they decide to brake.
The A.A.S.H.O. method recommends using a perception time of 1.5s and a reaction time of 1s, resulting in a total perception and reaction time of 2.5s.
a) Only statements 1 and 2 are correct.
b) Only statements 2 and 3 are correct.
c) Only statements 3 and 4 are correct.
d) All statements are correct.

Ed · Answer

O método A.A.S.H.O. para calcular a distância de frenagem (DF) consiste em duas partes: a distância percorrida durante o tempo de percepção e reação (D1) e a distância percorrida durante a frenagem (D2). O tempo de percepção e reação (tr) é o tempo entre o momento em que o motorista percebe um obstáculo e o momento em que decide frear. O método A.A.S.H.O. recomenda o uso de um tempo de percepção de 1,5 segundos e um tempo de reação de 1 segundo, resultando em um tempo total de percepção e reação de 2,5 segundos. Portanto, a alternativa correta é a letra b) Apenas as afirmações 2 e 3 estão corretas.

What is the A.A.S.H.O. method for calculating the braking distance (DF)? The braking distance is the minimum distance a vehicle can stop safely be...

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