Traffic Safety Study at Calgary Elementary Schools

NCT04956250 | Withdrawn

• 1 other identifier: REB19-1455
• Study Type: interventional
• Target: N/A
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

Motor Vehicle Injury

Outcome Measures

Primary Outcomes (3)

• 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.

• 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.

• 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 Outcomes (6)

• Traffic Volume - Pre-intervention

  At each location, a week of pre-intervention data collection will occur a week prior to the intervention being installed.

• Traffic Volume - Post-intervention

  At each location, a week of post-intervention data collection will occur a week after the intervention being installed.

• Traffic Volume - Follow-up

  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.

• Active Transportation Counts - Pre-intervention

  At each location, a day of pre-intervention data collection will occur a week prior to the intervention being installed. .

• Active Transportation Counts - Post-intervention

  At each location, a day of post-intervention data collection will occur a week after the intervention being installed. .

Study Arms (2)

Traffic Calming Curb Group

EXPERIMENTAL

Traffic calming curbs are yellow concrete slabs designed by the City of Calgary to be the same height as other roadside curbs and improve safety by reducing the street width, similar to curb extensions.

Other: Traffic Calming Curbs

In-Street Sign Group

EXPERIMENTAL

In-street pedestrian signs are regulatory signs placed along the centre line of the street, to remind road users of a pedestrian right-of-way at the marked/unmarked crosswalk.

Other: In-Street Pedestrian Sign

Interventions

Traffic Calming Curbs OTHER

Temporary curb extensions, placed at intersections.

Traffic Calming Curb Group

In-Street Pedestrian Sign OTHER

Yield sign placed in middle of road at intersection.

In-Street Sign Group

Eligibility Criteria

• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• No individual participants are recruited.

Sponsors & Collaborators

• University of Calgary: lead

Study Sites (1)

University of Calgary

Calgary, Alberta, T2N1N4, Canada

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: SEQUENTIAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: Modified Stepped-Wedge Randomized Controlled Trial

Study Record Dates

• First Submitted: April 7, 2021
• First Posted: July 9, 2021
• Study Start: May 1, 2020
• Primary Completion: October 31, 2020
• Study Completion: May 1, 2021
• Last Updated: June 26, 2023

Record last verified: 2021-03

Locations

CA (1)