A full-scale walkout by bus drivers would pose a tremendous challenge to the Horgan government, writes Keith Baldrey.

If a transit strike does happen, the union says the effects would be far worse than the last strike in 2001, which lasted for four months.

The union that represents more than 7,000 Metro Vancouver transit workers has voted almost unanimously in favour of a 90-day strike mandate after an all-day vote in Surrey on Thursday.