Active Transportation

Three people ride green bike share bikes on London street in front of red double-decker bus.

Bike use in London grew by 43% since 2019, but car use remains roughly the same

The city's efforts to reduce car use have stalled despite ambitious programs like congestion pricing and low-traffic neighborhoods.

June 16, 2026 - Yale Climate Connections

Woman taking selfie while wearing orange safety vest outdoors in front of red brick wall on field visit.

Meet our new (Proudly Gen Z!) Transportation Columnist!

In a new monthly column, Kristina Curtiss will “nerd out” (her words, not ours) on transportation system safety, active transportation planning, sustainability — and how it all hangs together.

January 8, 2026 - Planetizen

Large group of people and children on bikes in street.

Unleashing the Power of Cycling With Smart Messaging

Lloyd Alter describes how creative design and copywriting can flip the script and promote active transport.

May 9, 2025 - Carbon Upfront!

People biking along beach path with moored ship in San Diego, California.

San Diego Adopts First Mobility Master Plan

The plan provides a comprehensive framework for making San Diego’s transportation network more multimodal, accessible, and sustainable.

May 2, 2025 - SD News

Silhouette of man holding on to back of bicycle ridden by woman with Eiffel Tower in background.

Paris Bike Boom Leads to Steep Drop in Air Pollution

The French city’s air quality has improved dramatically in the past 20 years, coinciding with a growth in cycling.

April 14, 2025 - Momentum Magazine

Low view of separated bike lanes in middle of Pennsylvania Avenue with U.S. Capitol dome visible at end of street at night.

Safe Streets Funding in Jeopardy

The Trump administration is specifically targeting bike infrastructure and other road safety projects in its funding cuts.

April 4, 2025 - Grist

Man wearing black bike helmet changing battery on black e-bike outdoors.

Pilot Project Offers E-Bike Rebates in New York State

The program will start in the Village of Ossining with plans to expand in the greater Hudson River region.

March 25, 2025 - River Journal

Painted bike lane with bike symbol and diamond on street in downtown Toronto, Ontario.

A Troubling Trend of Backlash to Bike Lanes

Some cities are going so far as to rip out protected bike infrastructure that took years of advocacy to build.

February 19, 2025 - Momentum Magazine

Bird's eye view of moderately busy large freeway interchange in California.

California Environmental Leaders Call on State Agencies to Prioritize Multimodal Transportation

Even before President Trump took office, California was not meeting its emissions reduction goals.

January 27, 2025 - Streetsblog California

Close-up of black electric bike with person resting one foot on ground and holding blue helmet.

California E-Bike Rebate Program Launches — Again

After a series of fits and starts, CARB says the program will begin accepting applications this month.

December 5, 2024 - Streetsblog California

Worker in bicycle factory holding black and orange bike frame.

New Tariffs Could Stifle the US Bike Industry

Higher tariffs on components built in China will make the cost of U.S. bike production much higher, likely slowing the growth of the industry.

November 19, 2024 - Streetsblog USA

Lime rental bike on sidewalk in Denver, Colorado with Christmas lights in background.

Denver Micromobility on Track to Break Ridership Record

Denver’s shared bikes and scooters will provide as many as 6 million rides in 2024.

November 4, 2024 - The Denver Gazette

Row of red CaBi bikes at Capital Bikeshare station in Washington, D.C.

DC Micromobility Use Keeps Growing

Capital Bikeshare saw its fourth straight month of record ridership.

September 25, 2024 - Greater Greater Washington

View from back of woman and child walking on London street wearing warm clothes with a black cab visible in background.

London Low-Emissions Zone Prompts Shift to Active Modes

More children are using active transportation modes to get to school in the wake of a policy that charges drivers to enter a low-emissions zone in central London.

September 24, 2024 - Grist

People biking on paved bike trail in Arkansas.

Repositioning Bike and Walking Trails as Essential Infrastructure

Cities and states can access federal transportation funding by including trails in long-range transportation plans.

September 23, 2024 - Go Erie

Green painted bike and pedestrian trail with view of San Francisco Bay.

California Legislature Issues Revised Budget Proposal

The new plan rejects some of Gov. Newsom’s proposed cuts to active transportation funding.

June 2, 2024 - Streetsblog California

Man sitting on concrete wall with bike next to bike lane on Chicago waterfront.

Bike Month Is Over — But the Work Continues

The effort to build better bike infrastructure in U.S. cities remains an uphill battle, but there are bright spots.

May 29, 2024 - Diana Ionescu

Close-up on white "Bikes may use full lane" and green "Bike route" signs with tall California palm trees in background.

California Could Cut $600 Million From Active Transportation

Complete Streets advocates want the governor to fill the gap with funding from the state highway fund instead.

May 23, 2024 - Politico

People on bikes and walking on 606 Bloomingdale Bike Trail on sunny day in Chicago, Illinois.

Chicago Leads Nation in Biking Growth

Cycling as a mode share grew faster in the Windy City over the last five years than in any other major U.S. metropolis.

May 22, 2024 - Momentum Magazine

Cyclists riding on green painted bike lane protected by flexible post delineators in Chicago, Illinois.

Study: Lack of Safe Infrastructure Keeps People Away From Active Transportation

Roughly two-thirds of respondents to an REI Co-op survey said they would ride bikes more if protected bike lanes and other safety measures were more prevalent in their communities.

May 15, 2024 - REI Co-op

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.

Professor of Urban Planning

Harvard University Graduate School of Design

Transportation Planner I

KFH Group Inc.

Director, Strategy and Research

Greater Baltimore Committee

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.