What Is the Stopping Distance at 40 mph?
Direct Answer
The stopping distance at 40 mph is 36 metres (118 feet).
Understanding what is the stopping distance at 40 mph is crucial for safe driving.
This figure comes from the UK Highway Code and is made up of:
- Thinking Distance: 12 metres
- Braking Distance: 24 metres
- Total Stopping Distance: 36 metres

Follow us on Youtube – Books – Online Courses
What Does a Stopping Distance of 36 Metres Mean?
A stopping distance of 36 metres means that after spotting a hazard, a vehicle travelling at 40 mph will typically travel 36 metres before coming to a complete stop.
This includes the distance travelled while the driver reacts to the hazard and the distance travelled while the brakes are slowing the vehicle.
Stopping Distance at 40 mph
When considering what is the stopping distance at 40 mph, it’s essential to factor in reaction times.
This is why what is the stopping distance at 40 mph is a critical concept for drivers to grasp.
| Distance Type | Distance |
|---|---|
| Thinking Distance | 12 metres |
| Braking Distance | 24 metres |
| Total Stopping Distance | 36 metres |
In summary, what is the stopping distance at 40 mph varies based on several factors.
How Far Is 36 Metres?
Knowing what is the stopping distance at 40 mph can help prevent accidents.
Many drivers underestimate how far 36 metres is.
Thirty-six metres is approximately:
- Eight average family cars parked end to end
- Three large single-decker buses parked nose to tail
- Around 118 feet
Even at 40 mph, a vehicle cannot stop instantly.
Why Is the Stopping Distance at 40 mph Important?
Understanding the stopping distance at 40 mph helps drivers appreciate how much road space is needed to stop safely.
Forty miles per hour is a common speed limit on rural roads, bypasses and some urban routes, making it important for drivers to understand how far a vehicle will travel before stopping.
Thus, understanding what is the stopping distance at 40 mph is vital for road safety.
When driving, always remember what is the stopping distance at 40 mph to ensure you stop safely.
Theory Test Question
What is the typical stopping distance at 40 mph?
A) 23 metres
B) 36 metres ✅
C) 53 metres
D) 73 metres
Explanation
According to the Highway Code, the total stopping distance at 40 mph is 36 metres. This consists of 12 metres of thinking distance and 24 metres of braking distance.
Frequently Asked Questions
What is the stopping distance at 40 mph?
In conclusion, what is the stopping distance at 40 mph is a fundamental question every driver should know.
The stopping distance at 40 mph is 36 metres.
What is the thinking distance at 40 mph?
The thinking distance at 40 mph is 12 metres.
What is the braking distance at 40 mph?
The braking distance at 40 mph is 24 metres.
Is 36 metres the total stopping distance at 40 mph?
Yes. The Highway Code gives a total stopping distance of 36 metres at 40 mph.
Being aware of what is the stopping distance at 40 mph allows for better driving decisions.
Summary
The stopping distance at 40 mph is 36 metres (118 feet). This consists of 12 metres of thinking distance and 24 metres of braking distance. These figures are taken from the UK Highway Code and are important for both the Theory Test and safe everyday driving.