Section 186. Driving when mentally or phycically unfit to drive

186. Driving when mentally or phycically unfit to drive .—Whoever drives a motor vehicle in any public place when he is to his knowledge suffering from any disease or disability calculated to cause his driving of the vehicle to be a source of danger to the public, shall be punishable for the first offence with fine which may extend to two hundred rupees and for a second or subsequent offence with fine which may extend to five hundred rupees.