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Braking distance refers to the distance a vehicle will travel from the point when its brakes are fully applied to when it comes to a complete stop. It is primarily affected by the original speed of the vehicle and the coefficient of friction between the tires and the road surface, [Note 1] and negligibly by the tires' rolling resistance and vehicle's air drag.
Thus, we can find the brake force of a vehicle through the formula: [1] = where: is the brake force; is the mass of the vehicle; is the initial velocity of the vehicle when the brakes were applied; is the distance traveled by the vehicle between when the brakes were applied until coming to a stop
In some cases, the brake balance may be adjusted to match the traction (grip) of the vehicle during braking, which usually means distributing a greater braking force to the front (for example 55/45). In other cases, it may be desirable for the brake balance to be the more similar at the front and rear (e.g. 50/50) for the tires to last longer ...
d MT = braking distance, m (ft) V = design speed, km/h (mph) a = deceleration rate, m/s 2 (ft/s 2) Actual braking distances are affected by the vehicle type and condition, the incline of the road, the available traction, and numerous other factors. A deceleration rate of 3.4 m/s 2 (11.2 ft/s 2) is used to determine stopping sight distance. [6]
Above 30 km/h (19 mph), the vehicle will reduce its speed automatically. [47] It also allows the vehicle to engage braking assist, if there is a risk of a frontal collision and the driver suddenly applies the brakes. [47] The speed difference to allow an automatic stop was raised to 50 km/h (31 mph) in 2013 with improved cameras. [49]
This model ignores the effects of air drag, rolling resistance, lift, and relativity as a vehicle's great momentum and weight dominate these factors; they increase the complexity of the formulas while insubstantially changing the outcomes in practically all driving situations except ultra-low-mass bicycles stopping from inherently dangerously ...
The Grappler unfolds a net from the officer's vehicle, which is then nudged into the tire, wrapping around it and creating a tether. It ... Use of vehicle-stopping device poses questions from ...
Braking distance: feet feet meters safety: shorter is better Brake specific fuel consumption: lb/(hp·h) lb/(hp·h) g/(kW·h) economics, range lower is better traveled Distance: miles miles kilometers economy higher rating is better for vehicle longevity; lower elapsed is better for vehicle resale Drag coefficient (ratio) (ratio) (ratio)