Many drivers underestimate how much speed impacts their ability to stop safely. Whether you’re on city streets or a busy highway, understanding what the stopping distance is and how it changes with speed can help you drive more safely and protect others on the road.
Below, we’ll explain braking distance, give you examples of how far it can take to stop at common speed limits, and share why maintaining your brakes is essential for keeping your total stopping distance as short as possible.
What Is Stopping Distance?
Stopping distance is the total distance your car travels from the moment you notice a hazard to when your car comes to a complete stop. It includes:
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Reaction Distance: The distance you travel while you react and move your foot to the brake.
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Braking Distance: Your car travels this distance as it slows to a stop after you apply the brakes.
The faster you’re driving, the longer both reaction and braking distances become, making it harder to stop in time if something unexpected happens.
Braking Distance at Common Speeds
Here are some general estimates for total stopping distance at typical speed limits. These numbers assume dry pavement, good brakes, and average reaction time of about 1.5 seconds:
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15 mph: ~44 feet
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20 mph: ~63 feet
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30 mph: ~119 feet
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45 mph: ~196 feet
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55 mph: ~265 feet
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65 mph: ~344 feet
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70+ mph: 400 feet or more
As you can see, the stopping distance at highway speeds is several times longer than at residential speeds. At 70 mph, you could travel more than a football field before coming to a full stop—much longer than many drivers expect. This is why it’s important to always maintain a safe following distance, especially at higher speeds.
Why Brake Maintenance Matters
Even with perfect reaction time, your vehicle’s brakes play the most important role in stopping safely. Worn brake pads, low brake fluid, or damaged components can increase your braking distance and make it harder to stop in an emergency.
To keep your total stopping distance as short as possible:
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Have your brakes inspected regularly by a certified technician.
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Replace worn pads and rotors promptly.
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Keep brake fluid at proper levels and change it when recommended.
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Pay attention to unusual noises, vibrations, or reduced responsiveness.
Regular maintenance ensures your brakes perform properly when you need them most, helping you stop quickly and safely in any situation.
Stay Safe with Proper Braking
Understanding what the stopping distance is and how it increases with speed can help you make smarter choices behind the wheel. Keep a safe following distance, adjust your speed for road conditions, and stay on top of brake maintenance to keep your car stopping effectively.
Need your brakes checked? Visit Hawk Subaru for a professional inspection and service, so you can drive confidently knowing your brakes are ready when you need them.
