348. No driver is allowed to pass(1) where the driver of a vehicle behind him has already signalled his intention to pass or has already begun to pass;
(2) where the visibility is insufficient to allow entry onto the other part of the roadway in safety;
(3) on a two-way roadway, where the other part of the roadway is not clear of traffic for a sufficient distance to allow him to pass and return to the right of the roadway in safety.
Furthermore, no driver of a road vehicle is allowed to pass(1) on a two-way roadway, when a group of participants in an exceptional event or sports event or competition escorted by vehicles is ahead of him, unless a peace officer authorizes him to pass; or
(2) on a two-way roadway with two or more traffic lanes, when a group of participants in an exceptional event or sports event or competition escorted by vehicles is ahead of him, unless he reduces speed and moves to another lane for travelling in the same direction as the one in which he is travelling.