<P> In Victoria, Traffic Superintendent Dean McWhirter has said he is happy for motorists to flash their lights to warn other motorists they were approaching a speed camera in 2013 . </P> <P> Headlight flashing is common in Bangladesh, where roads are sometimes narrow and lane discipline is lax . It is done by large vehicles such as buses or trucks to alert smaller, more maneuverable vehicles to their presence and to encourage them to make way, for example by moving to the side of the road . </P> <P> In Ontario, the Highway Traffic Act does not prohibit "flashing head beams". Some have brought tickets to court, claiming the law only regulates the use of alternating lights in an attempt to impersonate emergency and law enforcement vehicles, and not a driver's manually flashing his car's headlamps to communicate with other drivers . The section that deals with alternating headlights in Ontario is Section 169 of the Highway Traffic Act . It is an offence to improperly use high - beams at night, which is dealt with by way of section 168 of the Highway Traffic Act . </P> <P> Headlight flashing in India is often used as a signal that the driver flashing you is offering to let you go first . Such use is however strongly discouraged because it can lead to accidents where the driver flashing has not seen the approach of another road user . It is also used to indicate to an oncoming vehicle to either stop or give way in narrow lanes . </P>

Is it illegal to flash your headlights to warn of police ontario