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Reduce Speed Limits From 90km/h to 80 km/h on French Roads: Impact on Mortality

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Centre d'études et d'expertise sur les risques, l'environnement, la mobilité et l'aménagement

Status

Unknown

Conditions

Death
Health Risks

Study type

Observational

Funder types

Other

Identifiers

NCT03798990
2018-12

Details and patient eligibility

About

On the first July 2018, the French government lowered the maximum authorized speeds on two-way roads without a central separator from 90 km/h to 80 km/h. The network concerned represents approximately 400 000 km of roads outside the built-up area, accounting for 55% of road deaths.

The objective of the measure is to reduce the number of deaths on the roads concerned by encouraging the reduction of the average speed practiced by drivers.

The analysis deals with a comparison of the number of killed persons on the network concerned, before and after the reduction of the speed limits. The "before" period is 2015-2017. The "after" period is from July 2018 to June 2019.

The data used are extracted from the national bodily injury accident file (BAAC). The police fills this file for each road accidents occurring on a road open to public traffic and causing at least one victim (i.e., one user requiring medical care and involving at least one vehicle).

Full description

This measure was intended general and concerns a type of roads in its entirety. The rest of the road network is too heterogeneous (urban, highways ...), leading to an accidentology very far in terms of severity, users concerned and families of accidents to allow the establishment of control groups that would not be affected by a reduction in the speed limit. As a result, the principle of an assessment of "before-and-after" effects has been retained.

Enrollment

80,000,000 estimated patients

Sex

All

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • people who circulate on French non-motorway non-urban roads during the period of the study
  • any person who dies in a road accident on this network during the period of the study, who either dies instantly or within 30 days of the accident, due to the consequences of the accident

Exclusion criteria

  • all persons involved in an accident on a private road
  • all persons involved in a road accident without a motor vehicle

Trial design

80,000,000 participants in 1 patient group

users of French roads
Description:
all road users circulating on French roads outside over-seas

Trial contacts and locations

1

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Central trial contact

David Chupin

Data sourced from clinicaltrials.gov

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