San Francisco Ann Arbor
Cluster 1: Longer cruising trips 562 (12%) 37 (6%)
Cluster 2: Fewer turns, large convex hull 1557 (33%) 120 (21%)
Cluster 3: Right turns 1120 (24%) 129 (23%)
Cluster 4: U-turns, repeated blocks 687 (14%) 76 (13%)
Cluster 5: Left turns 820 (17%) 208 (36%)