Moving Beyond Crash Statistics to Understand Road Safety

Why measuring traffic deaths alone doesn’t paint a full picture.

1 minute read

August 8, 2024, 11:00 AM PDT

By Diana Ionescu @aworkoffiction


Great Rivers Greenway bike trail bridge over highway in St. Louis, Missouri.

A segment of the Great Rivers Greenway bike and pedestrian trail in St. Louis, Missouri. | Rosemarie Mosteller / Adobe Stock

In a piece in Next STL, Christian Frommelt argues that planners and transportation officials shouldn’t rely exclusively on crash statistics to understand road safety conditions in their cities. “We need metrics that keep us accountable and crash data alone is inadequate in implementing serious, sweeping change.”

For Frommelt, “Measuring modal share—the proportion of people walking/rolling, biking, taking public transit, and driving—will help determine whether car-dominant planning continues to supplant overall health and safety.” Moreover, Census data only shows modal share for commutes to work, obscuring the many other types of trips that people take to grocery stores, schools, healthcare facilities, entertainment venues, parks, and more.

In St. Louis, where Frommelt lives, a new Complete Streets bill could help the city gather more information about those metrics and assess how infrastructure investments are paying off for pedestrians, cyclists, and other road users. Measuring mode share more accurately can also unlock federal funding opportunities. 

Friday, August 2, 2024 in nextSTL

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Wastewater pouring out from a pipe.

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage

Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

April 13, 2025 - Inside Climate News

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 16, 2025 - Diana Ionescu

Black and white photos of camp made up of small 'earthquake shacks' in Dolores Park in 1906 after the San Francisco earthquake.

The 120 Year Old Tiny Home Villages That Sheltered San Francisco’s Earthquake Refugees

More than a century ago, San Francisco mobilized to house thousands of residents displaced by the 1906 earthquake. Could their strategy offer a model for the present?

April 15, 2025 - Charles F. Bloszies

People walking up and down stairs in New York City subway station.

In Both Crashes and Crime, Public Transportation is Far Safer than Driving

Contrary to popular assumptions, public transportation has far lower crash and crime rates than automobile travel. For safer communities, improve and encourage transit travel.

April 18 - Scientific American

White public transit bus with bike on front bike rack in Nashville, Tennessee.

Report: Zoning Reforms Should Complement Nashville’s Ambitious Transit Plan

Without reform, restrictive zoning codes will limit the impact of the city’s planned transit expansion and could exclude some of the residents who depend on transit the most.

April 18 - Bloomberg CityLab

An engineer controlling a quality of water ,aerated activated sludge tank at a waste water treatment plant.

Judge Orders Release of Frozen IRA, IIJA Funding

The decision is a victory for environmental groups who charged that freezing funds for critical infrastructure and disaster response programs caused “real and irreparable harm” to communities.

April 18 - Smart Cities Dive