How to calculate vehicle stopping distance

Share these guidelines with your company’s drivers to help them avoid costly collisions.

Stopping distance is the outdistance needed to bring a moving vehicle to a dispatch check. Understanding this principle is fabulously important. If you ’ re not able to accurately calculate stopping distance, you run the risk of a serious accident. That could result in property damage and bodily injury to yourself and others. It could even result in death. The follow driver safety facts give you the data you need to help you control and stop your vehicle.

Table of Contents

Perception distance

perception time is the three-quarters of a second base it takes for you to realize you need to break – after your eyes see a hazard. so, if you ’ re drive at 65 miles per hour, your fomite will travel 71 feet before you realize you need to start brake .

Reaction distance

reaction time is besides three-quarters of a second. By the clock time you move your foot from the accelerator to the brake, three-quarters of a second have passed. Again, at 65 miles per hour, that ’ s another 71 feet traveled. thus far, your fomite has traveled 142 feet and you haven ’ deoxythymidine monophosphate even touched the brake .

Braking distance

Braking distance is the distance it takes to stop your fomite once you apply the brakes. At 65 miles per hour, it takes an extra 5.5 seconds or about 525 feet of actual brake lotion to stop your vehicle.

Stopping distance calculation

Stopping distance is the total distance needed to bring your fomite to a complete diaphragm. To determine the end distance, you calculate : Perception Distance (71 feet) + Reaction Distance (71 feet) + Braking Distance (525 feet) = Stopping Distance (667 feet)

Conditions also play a factor

coarse common sense tells us that when conditions change, times and distances change with them. Among the factors that increase full hold on outdistance include :

• Age of equipment
• Speed
• Traffic
• Weather
• Road surface
• The weight of your load

Check the condition of your tires and brakes

It ‘s authoritative to know that an evacuate truck requires a greater stopping distance than a fully besotted truck, because an empty truck has less grip. That means there ’ south less friction between the tires and the road. An empty truck may besides bounce and lock up its wheels, resulting in hapless brake capacity.

Wet roads produce more risk

Wet roads can importantly reduce your ability to stop your vehicle. In general, besotted roads can double your stopping distance. In ordering to stop a vehicle on a wet road using the same stopping distance as a dry road, you ’ llneed to drive slower. On wet roads, you should reduce your travel rapidly by about one-third. For model, slow down from65 miles per hour to around 43 miles per hour. On snow-clad roads, you should reduce your rush by at least one-half. This will help ensure that you have an adequate stop distance. Before traveling on potentially hazardous and slippery roads, be mindful of these coarse dangers :

• Shady sections of the road stay wet and icy longer than sunny sections.
• Bridges freeze before road surfaces.
• When ice begins to melt, road surfaces become wet and slippery.
• Black ice makes a road appear wet, but in actuality, the road is frozen over.
• Icy vehicle mirrors and antennas are good indicators of impending icy roads.
• When it first begins to rain, water mixes with oil from vehicles, making roads extremely dangerous.
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Category : Car Brakes