The union representing Metro Vancouver public-transit operators has scheduled a strike vote for April 28.

Unifor local 111 president Nathan Woods has told CNKW that negotiations with the Coast Mountain Bus Company (CMBC) have broken down amid the union's effort to secure better working conditions for its members.

CMBC is contracted by TransLink to supply the bus drivers and SeaBus and SkyTrain operators who keep the region’s public-transportation system moving around Metro Vancouver.

Unifor local 111 represents about 4,700 of those employees.

The last time the Lower Mainland went through a public-transit strike was in 2001. That dispute had workers on picket lines for four months.