"Motorist uses orange light on a foggy day rather than normal white light". Why?

[prasanna]

1. On a foggy day, the air has large amount of water droplets.
2. If a motorist uses white light, the water droplets present in the air scatter large amount of the blue light.
3. This on reaching our eyes decreases visibility and hence driving becomes extremely difficult.
4. Whereas orange light has longer wavelength and hence it is least scattered.