Study designs of evaluations included in the review
Controlled trials and observational studies were eligible for inclusion in the review.
Specific interventions included in the review
Studies on fixed or mobile speed cameras were eligible for inclusion in the review. Studies where the speed camera was not the main intervention were excluded. The included studies used speed cameras at speed camera sites and along unmarked road sections, situated in marked and unmarked police vehicles, and one study used an automated traffic infringement and notice penalty system alongside.
Participants included in the review
No inclusion criteria were applied to study participants.
Outcomes assessed in the review
Studies that investigated collision, injuries and deaths were eligible for inclusion.
How were decisions on the relevance of primary studies made?
Two reviewers screened the search results.