Slow down! When approaching a cyclist in a car from behind, unless you have an entire clear, empty lane in which to pass, slow down as you approach.  If there is no room to pass, slow to the speed of the bicycle until there is room.  If the lane is wide enough, you can pass the bicycle while traffic is coming the other way.

Give cyclists space. Try to allow at least one meter clearance when passing. It may not always be possible, but use one meter as a rule of thumb.

In the City of Vancouver, there is a speed limit of 30 km/hr on streets designated as neighbourhood bikeways (aka bike routes). Respect this limit, be aware that there will be a lot of cyclist traffic, and pay extra attention. Treat neighbourhood bikeways as local access streets, not thoroughfares you can race down to take advantage of less traffic and cyclist controlled lights at intersections.