Carpool Lanes

Empty carpool lane separated by yellow and black lines next to traffic on freeway in Southern California.

California’s Carpool Lane Exemption for EVs Dies This Week

The program that allows EV drivers to use carpool lanes alone has issued 1,211,530 stickers since it began in 2000.

December 2, 2025 - The Mercury News

Silver sedan in carpool lane on California freeway on sunny day.

When Carpool Lanes Cause Mayhem

A newly widened Bay Area freeway serves as a reminder of the futility of HOV lanes. There are better ways to manage and mitigate traffic.

October 24, 2025 - Irvin Dawid

Sign for HOV lane for carpools 2+ on California freeway.

September Must-Reads: Top 10 Articles From Last Month

EV drivers can no longer use carpool lanes alone, Bay Area transit is saved — for now — by a $750 million loan, and a Florida commuter rail line loses its state subsidy, jeopardizing its future.

October 6, 2025 - Diana Ionescu

Close-up on "Access Ok" electric car sticker on back of dark colored car bumper.

EVs Now Barred From Freeway HOV Lanes

Congress failed to renew a federal program allowing states to let electric car drivers use carpool lanes without additional passengers, forcing California to end EV access to its HOV lanes.

September 21, 2025 - Wired

Close-up of express lane marker on Bay Area freeway.

Congestion Pricing in the San Francisco Bay Area

Planners call them “express lanes,” but make no mistake, they are congestion pricing in action, and they're successful. The Bay Area network of what the Federal Highway Administration calls “high-occupancy toll (HOT) lanes” is growing.

May 12, 2024 - San Francisco Chronicle

Close-up of maroon California 'Clean Air Vehicle' carpool lane access sticker on the back bumper of a silver Tesla vehicle.

California EV Owners To Lose Carpool Lane Privilege

A program that began in 1999 to encourage more electric car ownership is set to expire next year without Congressional and state action.

April 2, 2024 - San Francisco Chronicle

Zakim Bridge and Tobin Bridge

Legal Settlement a Major Win for High-Capacity Transportation in Massachusetts

A decision by the Massachusetts Department of Transportation to rescind a carpool lane has not resulted in a significant expansion of transit and carpool capacity on Interstate 93 north of Boston.

November 22, 2020 - Streetsblog Massachusetts

Interstate 95/395 reversible HOV lanes

Solo-Occupant Hybrid Vehicles Lose Access to Carpool Lanes

A change in federal law on Monday meant that over 16,000 Virginia motorists must double or triple-up when using carpool lanes in Virginia. Next month, electric vehicles will need three occupants to drive free on I-395 when HOV lanes become HOT.

October 2, 2019 - The Washington Post

Carpool Lane

Converting a Carpool Lane to a High Occupancy Toll Lane No Easy Task

Supervisors of California's fourth-largest county declared their formal opposition to the conversion of carpool lanes on the Riverside Freeway to high occupancy toll (HOT) lanes, but they are open to toll lanes, under the right conditions.

September 19, 2019 - The Press-Enterprise

Oakland skyline and San Francisco Bay

The Many Ongoing Public Transportation Projects of the Bay Area

The San Francisco Chronicle offers a round-up of 11 big transit projects, by Caltrans, BART, SFMTA, and others, making progress around the bay.

March 25, 2019 - San Francisco Chronicle

Carpool Lane Sticker

New Year's Law: Over 200,000 EV Drivers Lost Access to California Carpool Lanes

As many as 215,000 owners of mostly electric vehicles purchased before 2017 lost their privilege to access carpool lanes on New Year's Day. The main purpose of HOV lanes is to reduce congestion.

January 8, 2019 - Capital Public Radio

Carpool Lane Sticker

220,000 EV Drivers in California to Lose Carpool Lane Perk in 2019

The good news: the Clean Air Vehicle program for electric vehicles will be extended for at least three years. The bad news: not all EVs that have a decal now will be able to be renewed. Congestion on HOV and HOT lanes is a major concern.

September 21, 2018 - Los Angeles Times

Freeway Construction

Toll and Tax, or Just Tax, to Pay for Highway Expansion?

A political decision by the Texas Transportation Commission last December to drop projects which included toll lanes was thought to doom 15 road expansions from their 10-year capital plan, but some will go forward with HOV as opposed to HOT lanes.

August 31, 2018 - Austin American-Statesman

280 Freeway San Francisco

San Francisco Supervisors Cool to Express Lanes on City's Freeways

The county agency that had hoped to do downtown cordon pricing now wants to add express lanes on Highways 101 and 280, but city supervisors are divided on charging solo drivers the option to buy into managed lanes. Both freeways lack carpool lanes.

January 3, 2018 - San Francisco Examiner

Popular but Controversial Seattle Express Toll Lanes Face Possible Termination

The two-year-old I-405 express toll lanes are actually a trial. It's up to the legislature to decide whether they will be permanent. Two metrics were laid out: revenue and performance, but there's controversy there as well.

December 30, 2017 - KIRO Radio

BART Train

Three Transportation Ballot Measures Could Be Headed to Bay Area Voters Next Year

The California Legislature approved bills to allow voters to decide on hiking sales taxes and tolls for regional transportation. Gov. Jerry Brown already signed a bill to allow San Mateo County voters to hike sales taxes for transportation.

September 19, 2017 - The Daily Journal

Carpool Lane Sticker

Second Attempt at Renewal for California's Clean Air Vehicle Decal Program

New legislation would continue the Clean Air Vehicle program after Jan. 1, 2019 to allow zero and near-zero emission vehicles to continue to qualify for carpool lane stickers in the Golden State.

July 10, 2017 - Santa Monica Daily Press

Carpool Lanes Near Denver Switching to HOV 3

Denver carpool lanes are making a switch to HOV 3. Two-seater cars need not apply.

December 29, 2016 - The Denver Post

Carpool Lane

New Carpool Lanes Under Construction in Los Angeles County

The ongoing build out of carpool lanes in Los Angeles County continues. A five-mile stretch of I-10 in the eastern portion of the county—a commuter corridor and a corridor frequented for getaways from L.A.—will be adding new capacity.

May 5, 2016 - KPCC

Clean Cars May Lose Express Lane Privilege in LA

Single occupant electric vehicles retained access to carpool lanes in California, while hybrid owners lost it on July 1st.

September 15, 2011 - Los Angeles Times: Environment

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

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