Osaka 1998.

Methods	CBA 6 yrs before data 6 yrs after data
Participants	Ia) 10 districts in Osaka with "road‐pia" projects that started in 1987 or earlier Ib) 9 districts in Osaka with "community street" projects C) 9 districts in Osaka
Interventions	Ia) "Road‐pia" project introduced area‐wide traffic calming including speed humps, limited street width, coloured pavement, chicanes, and entry treatments. Ib) "Community street" projects introduces chicanes, improved pavements, street furniture, and increased vegetation. C) No area‐wide traffic calming
Outcomes	Road traffic crashes Pedestrian crashes Cyclist crashes
Notes	Collision data collected from police records.