| Methods | CBA, with two 1 year periods of before data (Jul 1977–Jul 1979) and 1 year of after data (Jul 1979–Jul 1980). |
| Participants | 10 signalized intersections in Perth |
| Interventions | 1 RLC signalized intersection (4 way approach) and 9 non‐camera, signalized, 4 way control intersections |
| Outcomes | Total crashes, rear end crashes, right angle and indirect (turning) right angle crashes, injury crashes |
| Notes | Study also looked separately at total crashes during daylight versus darkness |
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