The design speed of NH on a cross slope of up to 10% is 100 km/h.

Cross slope refers to the slope or gradient of the road across its width. It is measured as a percentage and indicates the rate of change in elevation across the road. A cross slope of up to 10% means that for every 100 meters of horizontal distance, the road rises or falls by 10 meters.

Design speed:
Design speed is the maximum safe speed at which a road can be traveled under normal conditions. It takes into account various factors such as alignment, sight distance, cross slope, and other geometric features of the road.

Factors affecting design speed:
1. Alignment: The curvature of the road affects the design speed. Sharp curves require slower speeds, while gentle curves allow for higher speeds.
2. Sight distance: The distance over which a driver can see ahead on the road affects the design speed. Longer sight distances allow for higher speeds.
3. Cross slope: The cross slope of the road influences the design speed. Steeper cross slopes require slower speeds to ensure stability and control.

Explanation:
A cross slope of up to 10% is considered moderate. It indicates a significant change in elevation across the road. Roads with such cross slopes require careful design to ensure safe and comfortable travel.

The design speed of 100 km/h for a road with a cross slope of up to 10% indicates that the road is well-designed and can accommodate higher speeds. This suggests that the road has favorable alignment, adequate sight distance, and appropriate cross slope considerations.

The high design speed of 100 km/h also implies that the road is likely a National Highway (NH). National Highways are typically designed for higher speeds due to their importance as major arterial routes connecting cities and regions.

Conclusion:
In conclusion, the design speed of NH on a cross slope of up to 10% is 100 km/h. This indicates that the road is well-designed to accommodate higher speeds while considering the cross slope and other geometric features. The high design speed is in line with the importance and function of National Highways as major transportation routes.