Section 97(2)(f) in Delhi Motor Vehicles Rules, 1993
(f)A red light without flasher will be allowed to be used on the front bonnet of the motor vehicle after obtaining the written permission of the [Chief Secretary of NCT of Delhi.] [Substituted vide notification no. F.Section 11/75/Tpt/97/455 dated 13-04-2005.] Provided that the power of the high bulb so used shall not exceed seven watts and covered with frosted glass.