Right and Left Hand Limit Calculator
Right and left hand limits are crucial for safe and legal vehicle operation. They determine the maximum speed a vehicle can travel while carrying a specific load. Our calculator helps you quickly and accurately find these limits.
- Enter the vehicle’s speed in kilometers per hour (km/h).
- Enter the load the vehicle is carrying in tonnes.
- Select the vehicle type from the dropdown menu.
- Click the ‘Calculate’ button to find the right and left hand limits.
The right hand limit is calculated using the formula: R = (S * 1000) / (60 * L), where R is the right hand limit, S is the speed, and L is the load. The left hand limit is calculated using the formula: L = (S * 1000) / (40 * L).
| Vehicle Type | Speed (km/h) | Load (tonnes) | Right Hand Limit (km/h) |
|---|---|---|---|
| Car | 100 | 1 | 166.67 |
| Truck | 80 | 5 | 128 |
| Bus | 60 | 10 | 72 |
- Always ensure your vehicle’s speed does not exceed the right hand limit.
- Never exceed the left hand limit, as it could lead to vehicle instability.
- Regularly maintain your vehicle to ensure it operates within these limits.
What happens if I exceed the right hand limit?
Exceeding the right hand limit can lead to loss of vehicle control and increased risk of accidents.
How do I interpret the left hand limit?
The left hand limit indicates the maximum speed at which the vehicle can safely travel while carrying a specific load.
Learn more about vehicle operations guidelines from the U.S. Department of Transportation
Read the full report on vehicle speed limits from the Federal Highway Administration