The **stopping distance** is the space a vehicle travels from the moment the driver detects an obstacle until the vehicle comes to a complete stop. This distance is composed of two parts: the **reaction distance** and the **braking distance**.

- **Reaction distance**: It is the time it takes for the driver to react upon seeing an obstacle and begin to brake.
- **Braking distance**: It is the space the vehicle travels from the moment the brake is applied until it comes to a complete stop.

The stopping distance can vary due to several factors:

- **Condition of the vehicle**: A vehicle with brakes or tires in poor condition will need more space to stop.
- **Driver's conditions**: The age, physical, or psychological state of the driver can affect their reaction time.
- **Road conditions**: A wet or poorly maintained road can increase the braking distance.

Therefore, the stopping distance depends on the poor condition of the vehicle, the driver, and the road, not just one of these factors.