Based on Tikal. Same populator type as for trees. I made a mask for each lane of traffic - Northbound, Sb, Eb, Wb, and set two groups to move along each road: one fast and one slow. The fast ones move 10m over the course of the animation, the slow ones go 6m. I timed my morning walk and figured that my pace of 1m/s was good for the fast ones. Its barely noticeable; you'll have to look closely to see any motion but if they didn't move it would show. I'm going to replace the slow humans with other ground traffic at a faster pace so there will be some noticeable motion.
Terrain 46,350 m x 46,350 m
10 second animatic -- low res
Human Populations follow roads:
Northbound Fast
Northbound Slow
Southbound Fast
Southbound Slow
Eastbound Fast
Eastbound Slow
Westbound Fast
Westbound Slow
Fast: 10m/10 sec
Slow: 6m/10 sec
Robe colors are Brown Lt, Mid, Dk split among the groups.
The animatic is at
http://www.veoh.com/videos/v15074239Dy7DZsDm