Use Of Passing Beam - Section 168
When on a highway at any time when lighted lamps are required to be displayed on vehicles, the driver of a motor vehicle equipped with multiple beam headlamps shall use the lower or passing beam when,
(a) approaching an oncoming vehicle within 150 metres; or
(b) following another vehicle within 60 metres, except when in the act of overtaking and passing. R.S.O. 1990, c. H.8, s. 168.