Traffic Jam

Purpose

Traffic Jam is a sequencing puzzle where two sub-groups stand on a line of spots facing each other with one empty spot between them. The groups must swap positions following strict movement rules. It develops strategic thinking, patience, communication, and the ability to see the bigger picture while managing step-by-step execution.

At a glance

• Group size: 6–16 participants (two equal sub-groups)
• Duration: 25 minutes
• Difficulty: Intermediate
• Facilitation style: Observational with rule enforcement
• Setting: Indoors or outdoors; linear space

How to run

1. Setup (3 min): Lay out spots (tape squares, carpet tiles, or paper) in a line — one more spot than the number of participants. Place half the group on each end, all facing the centre. Leave the middle spot empty.
2. Brief (3 min): The two groups must swap ends. Rules: you may step forward into an empty spot, or hop over one person facing you into an empty spot. You may not move backward, hop over more than one person, or hop over someone facing the same direction.
3. Attempt (15 min): Let the group work. They will likely get stuck. When locked, allow a reset but encourage them to remember what did not work.
4. Debrief (4 min): What pattern did you discover? How did leadership emerge? What happens in your work when you get stuck in a deadlock?

Materials needed

• Tape squares, carpet tiles, or paper plates (n+1 where n = number of participants)
• Linear floor space of 3–5 metres

Pitfalls & common mistakes

• Odd number of participants: The puzzle requires equal sub-groups. With odd numbers, the facilitator can join or one person can observe.
• Not allowing resets: Getting locked is part of the learning, but infinite lockouts are demoralising. Allow controlled resets.
• Explaining the solution: The puzzle's power is in the aha-moment. Never reveal the pattern.
• Too many people: Beyond 16, the puzzle takes very long. Split into parallel groups.

Inclusion & accessibility

• The puzzle works seated — use chairs in a row instead of floor spots.
• Participants with cognitive processing differences benefit from visual aids (numbered spots, written rules).
• Allow the group to talk through the logic together rather than requiring individual insight.

Variations

• Giant Traffic Jam: Use hula hoops outdoors for a full-body version.
• Silent Traffic Jam: No verbal communication. Forces visual coordination.
• Competitive Traffic Jam: Two parallel groups race to complete the swap first.

When NOT to use this

• When the group has very low patience for abstract puzzles and would disengage.
• With participants who strongly dislike being stuck or failing publicly.
• As the only activity — pair it with a physical energiser for balance.

Source & further reading

• Rohnke, K. (1984). Silver Bullets. Project Adventure.
• Cain, J. and Jolliff, B. (1998). Teamwork and Teamplay. Kendall Hunt.