Why Bike Lanes Are Good: An Explainer for the US Transportation Secretary

Sean Duffy says there’s no evidence that bike lanes have benefits. Streetsblog — and federal agencies’ own data — beg to differ.

1 minute read

April 27, 2025, 5:00 AM PDT

By Diana Ionescu @aworkoffiction


Green painted bike lane with striped buffer between car lane and curb parking lane.

alpegor / Adobe Stock

U.S. Transportation Secretary Sean Duffy seems to have some inaccurate ideas about bike lanes — so Streetsblog USA created an explainer that outlines the hard data, much of it from the federal government’s own agencies.

The Federal Highway Administration's own website on bike lanes says that even just adding flexible plastic posts to paint-only on-road cycle paths can reduce total crashes up to 53 percent — and of course, putting harder infrastructure like concrete jersey barriers or curbs between cars and fragile human bodies is so much better that most researchers don't even bother to study it.

Data also shows that a sufficiently robust and safe bike lane network does encourage more people to ditch cars and use bikes instead. According to the article, “study after study shows that bike lanes do not make car congestion worse— and in some cases, especially in urban areas that place them strategically, they can actually make it better.”

Disputing Duffy's claim that bike funding takes away from other transportation projects, Streetsblog highlights how little funding actually goes toward bike lanes: “Per the League of American Bicyclists, less than 2 percent of federal transportation funding is spent on biking and walking combined, amounting to $2.36 per person per year.” We hope Secretary Duffy takes Streetsblog’s advice and takes a harder look at his own agencies’ numbers.

Friday, April 25, 2025 in Streetsblog USA

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

Close-up of "Apartment for rent" sign in red text on black background in front of blurred building

Trump Administration Could Effectively End Housing Voucher Program

Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.

April 21, 2025 - Housing Wire

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 23, 2025 - Diana Ionescu

Ken Jennings stands in front of Snohomish County Community Transit bus.

Ken Jennings Launches Transit Web Series

The Jeopardy champ wants you to ride public transit.

April 20, 2025 - Streetsblog USA

View of residential street in Los Angeles with palm trees and hazy city in distance.

Rebuilding Smarter: How LA County Is Guiding Fire-Ravaged Communities Toward Resilience

Los Angeles County is leading a coordinated effort to help fire-impacted communities rebuild with resilience by providing recovery resources, promoting fire-wise design, and aligning reconstruction with broader sustainability and climate goals.

5 hours ago - Los Angeles County Chief Sustainability Office

Entrance sign for San Jose-Santa Clara Regional wastewater treatment facility.

When Borders Blur: Regional Collaboration in Action

As regional challenges outgrow city boundaries, “When Borders Blur” explores how cross-jurisdictional collaboration can drive smarter, more resilient urban planning, sharing real-world lessons from thriving partnerships across North America.

7 hours ago - * A Placemaking Journal

Rendering of Penrose Roundabout in Philadelphia, Pennsylvania.

Philadelphia Is Expanding its Network of Roundabouts

Roundabouts are widely shown to decrease traffic speed, reduce congestion, and improve efficiency.

April 27 - WHYY