Evidence map›Paper›PMID 17666698›Full record

ArticleAmerican journal of public health2007

Reducing road traffic injuries: effectiveness of speed cameras in an urban setting.

Katherine Pérez, Marc Marí-Dell'Olmo, Aurelio Tobias, Carme Borrell

Abstract read
In one paragraph

Article in American journal of public health, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Speed cameras for the prevention of road traffic injuries and deaths.The Cochrane database of systematic reviews · 2010
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Evaluation of road safety policies and their enforcement in Mexico City, 2015-2019: an interrupted time-series study.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2023
    Article
  6. Review
  7. Article
  8. Article
  9. Speed Management Strategies; A Systematic Review.Bulletin of emergency and trauma · 2016
    Review
  10. Motor vehicle injuries in Qatar: time trends in a rapidly developing Middle Eastern nation.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2012
    Article
  11. Article
  12. The economic cost of road traffic crashes in an urban setting.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2007
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Katherine PérezAgència de Salut Pública de Barcelona, CIBER Epidemiología y Salud Pública, Barcelona, Spain. cperez@aspb.es
Marc Marí-Dell'Olmo
Aurelio Tobias
Carme Borrell

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesWe assessed the effectiveness of speed cameras on Barcelona's beltway in reducing the numbers of road collisions and injuries and the number of vehicles involved in collisions.

methodsWe designed a time-series study with a comparison group to assess the effects of the speed cameras. The "intervention group" was the beltway, and the comparison group consisted of arterial roads on which no fixed speed cameras had been installed. The outcome measures were number of road collisions, number of people injured, and number of vehicles involved in collisions. We fit the data to Poisson regression models that were adjusted according to trends and seasonality.

resultsThe relative risk (RR) of a road collision occurring on the beltway after (vs before) installation of speed cameras was 0.73 (95% confidence interval [CI]=0.63, 0.85). This protective effect was greater during weekend periods. No differences were observed for arterial roads (RR=0.99; 95% CI=0.90, 1.10). Attributable fraction estimates for the 2 years of the study intervention showed 364 collisions prevented, 507 fewer people injured, and 789 fewer vehicles involved in collisions.

conclusionsSpeed cameras installed in an urban setting are effective in reducing the numbers of road collisions and, consequently, the numbers of injured people and vehicles involved in collisions.

Indexed as

PhotographyAccidents, TrafficAutomobile DrivingHumansLaw EnforcementPoisson DistributionProgram EvaluationRisk-TakingSpainUrban Population

Identifiers

PMID17666698
PMCPMC1963295

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.