Formulary Braking Distance

On a homogeneous movement a homogeneously retarded movement follows.

German version

The stopping distance adds the homogeneous movement during the reaction (reaction distance) and the retarded movement during braking (braking distance). Please consider the conversion from km/h to m/s!

homogeneous

+

retarded movement

s =

sR

+

sB

s =

v · tR

+

v²

2 · a

s =

v · tR

+

v · tB

2

s: Stopping distance in m (Meter)
sR: Reaction distance in m (Meter)
sB: Braking distance in m (Meter)
v: Velocity in m/s
tR: Reaction time in s (seconds)
tB: Braking time in s (seconds)
a: Braking deceleration in m/s²

Check your calculation!     You need help?
Insert numbers only in three of the four fields!
v Velocity m/skm/h
tR Reaction time s
tB Braking time s
s Stopping distance m