Loud City Labs, Bike Research
Cycling transforms cities and lives, yet our streets remain dominated by cars. We explore the science behind these stories from biomechanics to health and urban design.
About
Bike Research is a site dedicated to exploring the science and policy behind cycling, safety, and urban transportation. We publish lightly edited, essays that dive into niche questions about infrastructure, behavior, and urban design. Our content combines data science, research synthesis, and real-world experience to make complex transportation topics accessible and actionable.
Contributors
is a data scientist, inventor, and founder of Loud Bicycle, where he has spent more than a decade developing car-horn-loud safety horns for bikes. His career connects road and traffic safety, human perception, and machine learning. Jonathan currently works at Cambridge Mobile Telematics, applying data science to transportation safety. He writes about the intersection of cycling safety, infrastructure design, and human behavior.
is an urban data scientist specializing in transit operations and traffic enforcement. Currently at Hayden AI. He has extensive experience collaborating across research and practice, having worked with the Chicago Transit Authority, MIT Transit Lab, and New York’s MTA to improve service reliability through better operations management and real-time information systems.
Research Articles
Real barriers don't fold
- Infrastructure
- August 23, 2026
- 3 mins
A car can only block a bike lane it's able to enter—which means the same lanes get parked in and get people killed. Greater Boston's blocked-lane reports show why only real, physical separation fixes both.
read-more →Half of Boston's Blocked-Bike-Lane Reports Come From Nine Corridors
- Infrastructure
- August 19, 2026
- 8 mins
Nearly 1,000 crowdsourced reports of cars in Boston bike lanes cluster onto a handful of corridors. An optimization over the data identifies nine merged corridors that account for 508 reports—53% of the total—yielding a map of where to build protection first.
read-more →Twelve Loading Zones Could Cover Half of Cambridge's Blocked-Bike-Lane Reports
- Infrastructure
- August 19, 2026
- 9 mins
355 crowdsourced reports of cars in Cambridge bike lanes collapse onto a handful of curbs. An exact optimization finds the 12 smallest loading-zone locations—each a 200-meter circle—that together cover 51% of every report, and proves no eleven can do it.
read-more →Calgary Put a Bike-Lane Network on Trial—and Measured Everything
- Research
- August 18, 2026
- 15 mins
Calgary’s 18-month cycle-track pilot measured ridership, safety, winter use, traffic, demographics, and business impacts before going permanent.
read-more →Do Bike Lanes Hurt Local Businesses? What Controlled Studies Actually Find
- Research
- August 18, 2026
- 15 mins
Controlled studies test how bike lanes affect local business sales, jobs, vacancies, customer visits, parking, and construction disruption.
read-more →Floating Bus Stops: When a Protected Bike Lane Crosses the Bus Door
- Infrastructure
- August 18, 2026
- 19 mins
What floating bus-stop evidence says about bike safety, disability access, cyclist yielding, and England's pause on shared-use boarders.
read-more →One-Way or Two-Way? How to Choose a Protected Bike Lane
- Infrastructure
- August 18, 2026
- 15 mins
One-way vs. two-way protected bike lanes: how intersections, access, width, signals, curb use, and maintenance should decide the design.
read-more →Do Protected Bike Lanes Reduce Crash Risk? Count the Riders First
- Research
- August 18, 2026
- 14 mins
Do protected bike lanes reduce crash risk? London’s Cycle Superhighways show why cyclist exposure, design, and intersections change the answer.
read-more →The Bike Lane That Was Supposed to Kill Saint-Denis Street
- Infrastructure
- August 18, 2026
- 13 mins
How Montreal's Saint-Denis REV changed cycling, winter travel, traffic, and local business—and what its data can really prove.
read-more →Seville Built a Bike Network, Not a Collection of Bike Lanes
- Infrastructure
- August 18, 2026
- 13 mins
How Seville built a connected protected bike network fast, multiplied cycling, reduced risk per trip, and exposed the limits of lane mileage.
read-more →