Google Maps adds Traffic Conditions on major streets
Google maps added traffic conditions on local streets today. A map of San Francisco shows traffic on South Van Ness near the Blinktag Office as medium, actually the street is rarely congested, it just has a lot of stop lights so you can rarely go “fast” even with no other vehicles.
Freeway traffic had been a feature of google maps for a while, but providing traffic conditions on non-freeways is especially useful for travel within SF as most car trips don’t involve travel on a freeway. San Francisco has removed several freeways in recent years, freeways are useful for getting to/from the city but not as much for travel within the city.
The traffic data is actually crowdsourced from people sharing their location from google maps for mobile, read more on the google blog. I’m not sure if this includes iphone users as we can’t run background apps.

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