The **level of demand of a road** can be determined by its **geometric characteristics**. This refers to how the shape and structure of the road affect driving.

- **Gradient**: It is the slope of the road. A change in gradient can cause reduced visibility, which increases the difficulty of driving. For example, on a very steep road, you cannot see the vehicles in front or those coming in the opposite direction.


- **Curves**: Curves are sections where the road changes direction. Some curves have reduced visibility, meaning you cannot see the full width of the road, thus increasing the level of demand for the driver.


- **Motorways**: These roads have specific characteristics, such as controlled access and separate carriageways for each direction of travel. These geometric characteristics influence how one should drive on them.


Therefore, the geometric characteristics of a road, such as the gradient, curves, and motorway design, are factors that determine the level of demand when driving.