See alternative description and "solution" here: http://www.squarewheels.com/articles/trafficjam.html
=== Videos ===
*Traffic Jam - Duct Tape Teambuilding Game: http://www.youtube.com/watch?v=-QQunc5T9B8
*How to Play Traffic Jam: http://www.youtube.com/watch?v=KizRWfuT5uQ
*Traffic Jam: http://www.youtube.com/watch?v=G5W_xH5CgbY&feature=related