The **risk factors** in driving are divided into three main categories: **human**, **vehicle**, and **road and environment**. The question refers to elements such as **ice**, **snow**, **wet road**, and **roadworks**, which are part of the **road and environment factor**.

- **Ice and snow**: These elements affect the road and can cause the vehicle to skid, as the wheels do not grip the ground well. It is important to drive slowly and maintain a large safety distance in these conditions. Ice is usually found in damp areas, bridges, and places where the sun does not reach.

- **Wet road**: A wet road is a risk factor related to the condition of the road. It can cause loss of control, especially in curves, and it is important to reduce speed and increase the safety distance to avoid accidents.

- **Roadworks**: Roadworks are also part of the environment and can alter the normal conditions of the road, requiring additional precautions from the driver.

These elements are not related to the **vehicle factor**, which refers to mechanical problems such as brake failures, nor to the **human factor**, which includes behaviors such as speeding or distractions. Therefore, ice, snow, wet road, and roadworks are part of the **road and environment factor**.