If you'd like to see what a couple seconds of a ride in a taxi was like, I've placed it below. Notice that "lanes" are basically meanless in the two-way traffic and that people cross and enter the flow almost constantly. Lanes and traffic lights seem to be nothing but "suggestions" and there must be a law that one may remain in the same lane no longer than 5 seconds!
(The video may not work on all browsers. If it doesn't work on yours, sorry.) The video is a bit dark in spots. I recorded it with the video feature on our Sony digital camera.