Traffic Safety Study at Calgary Elementary Schools

Motor Vehicle Injury Clinical Trial

Official title:

Traffic Safety Study at Calgary Elementary Schools

Clinical Trial Details — Status: Withdrawn

Administrative data

• NCT number: NCT04956250
• Other study ID #: REB19-1455
• Status: Withdrawn
• Phase: N/A
• Start date: May 1, 2020
• Est. completion date: May 1, 2021

Study information

• Verified date: March 2021
• Source: University of Calgary
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Installing specific traffic calming features designed to reduce vehicle speed and volume around schools may lead to a reduction in injury risk for child pedestrians and bicyclists, and may increase numbers of children walking and bicycling to school. Therefore, this study seeks to evaluate the effectiveness of specific built environment features at influencing traffic speed and volume, and active transportation, both immediately following installation and months later.

Description:

Background Collisions with motor-vehicles are a leading cause of severe child bicyclist and pedestrian injuries in Canada. Injury rates and severity are associated with traffic speeds and volume but may be moderated through traffic calming.

Objective To assess the association of specific traffic calming measures on changes in traffic speed and volume, and active transportation prevalence, around Calgary, Alberta, Canada elementary schools.

Design This modified stepped-wedge randomized controlled trial was conducted at a sample of public elementary schools, from July 2020 to May 2021. Schools had either traffic calming curbs or in-street signs installed at an intersection within 100 m of the main entrance. The primary outcome was speed of vehicles driving towards or away from intervention. Secondary outcomes were traffic volume driving past the intervention and counts of children using active transportation at the intervention crosswalk.

Recruitment information / eligibility

• Status: Withdrawn
• Enrollment: 0
• Est. completion date: May 1, 2021
• Est. primary completion date: October 31, 2020
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: N/A and older

Eligibility

Inclusion Criteria:

• No individual participants are recruited.

Related Conditions & MeSH terms

• Motor Vehicle Injury

Intervention

Other:
• Traffic Calming Curbs
Temporary curb extensions, placed at intersections.
• In-Street Pedestrian Sign
Yield sign placed in middle of road at intersection.

Locations

Country	Name	City	State
Canada	University of Calgary	Calgary	Alberta

Sponsors (1)

Lead Sponsor	Collaborator
University of Calgary

Country where clinical trial is conducted

Canada, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Traffic Speed - Pre-intervention	Traffic speed of all vehicles who pass by the intervention will be recorded.	At each location, a week of pre-intervention data collection will occur a week prior to the intervention being installed.
Primary	Traffic Speed - Post-intervention	Traffic speed of all vehicles who pass by the intervention will be recorded.	At each location, a week of post-intervention data collection will occur a week after the intervention being installed.
Primary	Traffic Speed - Follow-up	Traffic speed of all vehicles who pass by the intervention will be recorded.	At a random selection of locations (drawn from those that received the intervention during the school year), a week of data collection will occur during the spring following the installation of the intervention.
Secondary	Traffic Volume - Pre-intervention	The number of all vehicles who pass by the intervention will be recorded.	At each location, a week of pre-intervention data collection will occur a week prior to the intervention being installed.
Secondary	Traffic Volume - Post-intervention	The number of all vehicles who pass by the intervention will be recorded.	At each location, a week of post-intervention data collection will occur a week after the intervention being installed.
Secondary	Traffic Volume - Follow-up	The number of all vehicles who pass by the intervention will be recorded.	At a random selection of locations (drawn from those that received the intervention during the school year), a week of data collection will occur during the spring following the installation of the intervention.
Secondary	Active Transportation Counts - Pre-intervention	The number of people (Adults v Children) who use the intervention location, and mode of travel (e.g. walking, bicycling).	At each location, a day of pre-intervention data collection will occur a week prior to the intervention being installed. .
Secondary	Active Transportation Counts - Post-intervention	The number of people (Adults v Children) who use the intervention location, and mode of travel (e.g. walking, bicycling).	At each location, a day of post-intervention data collection will occur a week after the intervention being installed. .
Secondary	Active Transportation Counts - Follow-up	The number of people (Adults v Children) who use the intervention location, and mode of travel (e.g. walking, bicycling).	At a random selection of locations (drawn from those that received the intervention during the school year), a day of data collection will occur during the spring following the installation of the intervention.