Section 94(4) in The Bihar Motor Vehicles Rules, 1992
(4)Flag. - The flag of the meter shall be suitable strength and shall bear the words 'For Hire' in the white letters of plain book type at least 50 millimetres in height and a proportionate thickness on a red coloured ground so that they may be easily read from a distance. The arm or lever which carries the flag shall be of such length that when it is kept vertical the lower edge of the flag is above the highest part of the meter.
