VANCOUVER The City of Vancouver has introduced what it calls its first slow zone for traffic on local streets. As of Wednesday, all of the streets in the area bound by Commercial Drive, First Avenue, Clark Drive and North Grandview Highway have a speed limit of 30 km/h, rather than the 50 km/h that is the default speed limit on other city streets. Gateway signs, speed limit signs and painted markings alert drivers to the change within the slow zone, but access and parking in the area are not affected, the city said in a news release Wednesday. The slow zone is a pilot project and is intended to help the city reduce - and eventually eliminate - traffic-related fatalities and serious injuries.