Sounds like more, talk, talk, talk.
Restrict heavy trucks, including those for construction to after midnight. (If govt can close the bars at midnight, it can stop all trucks after 6am.) No private vehicles on city roads in the downtown core, London model. Not only will both those reduce smog but also road dust.
Time for BMA to DEMAND govt enforcement against burning in the provinces. Ahem, put the brakes on CP's greed.
Overtime for ACTION, not measurement, assessment & talk. All that's been done before.