The U.S. does this too. Happens maybe once a month around San Jose, for example. Usually you can avoid it because Google Maps detects the huge back-up and route

The U.S. does this too. Happens maybe once a month around San Jose, for example. Usually you can avoid it because Google Maps detects the huge back-up and routes you around it :) if you know what to look for (half-mile stretch of red traffic in a place where that's not the norm on a week-end evening), it's generally not hard to spot.