03 Nov 2014 03 Nov 2014 03 Nov 2014
Traffic is the third mission. The story leads you here, you can't miss it.
Once you get to the part where there is fast moving two way traffic, you have to cross over killing all enemies but without hitting any vehicles. I found it best to do the first part with a shield, as it's easy for a stray bullet to hit a passing vehicle.
Check out the video.