Technically there are three kinds of drivers
1. Valet only for Cars
2. Staff/Admin for Cars and Bus (Staff Bus)
3. Executive Drivers for car and bike (day to day work)
As per Wages Act drivers also may be count in normal staff.
They are not performing extreme technical job they are just driving the company's vehicle.
I hope it will help you.
1st March 2008 From India, Mumbai