Bike-Mounted Sensor Could Improve Safety for Cyclists

A new camera technology can detect when vehicles pass too close to people on bikes.

1 minute read

December 12, 2024, 9:26 AM PST

By Diana Ionescu @aworkoffiction


Cyclist on folding bike riding next to silver car on city street.

vitaliy_melnik / Adobe Stock

A handlebar-mounted camera technology developed at the University of Arizona and Arizona State University could help keep cyclists safer on the road by collecting data about close-passing drivers, reports Kea Wilson for Streetsblog USA.

The camera is paired with a sensor that detects when a vehicle passes dangerously close to a cyclist and collects information that can be used for legal evidence and, collectively, inform planners and policymakers about close-passing “hot spots” and where safe bike infrastructure is lacking.

According to Wilson, “One Australian study estimates that up to 38 percent of motor vehicle drivers who hit cyclists were either overtaking or close-passing the vulnerable road user. But similar stats are hard to come by in most U.S. jurisdictions.” Now, advocates hope that technology like CycleSafe, as the sensor is dubbed, will help change that. 

Robert Heinrichs, associate professor at Arizona State's School of Computing and Augmented Intelligence, says “it's not impossible that the CycleSafe software could someday be programmed to automatically notify EMS when a serious crash is detected, potentially saving lives in hit-and-runs; it could also generate video footage for educational campaigns aimed at showing drivers just how terrifying a close pass really is for a person in the saddle.”

Wednesday, December 11, 2024 in Streetsblog USA

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

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

September 16, 2026 - Zachary Whalen

Overlapping highways

The state-sanctioned urbicide of Austin

People don’t kill cities. Freeways do.

September 8, 2026 - Benjamin Schneider

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

A map showing Brightline West's intended route from  Las Vegas to Rancho Cucamonga, California.

Brightline West’s future may rely on $6 billion federal loan

The company has until Nov. 2 to make a $400 million equity investment into its proposed high-speed rail line.

5 seconds ago - Smart Cities Dive

A Metro bus drives down a street on a rainy day. Parallel to the bus is a line of parked cars, then, a line of umbrellas.

LA Metro’s ultimatum: no extra buses for LA28 if federal funding isn’t imminently secured

If Metro does not provide additional buses, LA28 organizers will have to find a new way to manage Olympic traffic. LA28’s budget does not include a line item for transit.

1 hour ago - LAist

Geese flock to a frozen pond in Aurora, Colorado. There are houses in the background.

Colorado’s Largest Data Center Could Rise Next to Homes — Without a Public Hearing

The proposed campus would consume 11 times the power of Denver International Airport; as it has across the country, opposition mounts.

2 hours ago - Capital & Main

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.