It’s the law in BC that you yield to the public bus. Stop and let the bus back into regular traffic flow if its signals indicate the intention. This law applies where the speed limit is 60 km/hr or less.
Many moons ago, Carmen became an ICBC-approved driving instructor at the age of 22 in North Vancouver, and has spent many years working with new and experienced drivers around the lower mainland. She can be found reading the Motor Vehicle Act for fun while receiving strange looks from others. May the quest for great driving continue!