Highway 101

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

Highway 101 winding through redwood trees with road sign for Eureka, CA partially visible in top right.

Caltrans Plans $2 Billion Tunnel to Save Crumbling Coastal Highway

A roadway connecting Eureka and Crescent City is a lifeline for local residents, but its future is uncertain as rock slides force repeated closures.

July 29, 2025 - San Francisco Chronicle

Close-up of Fastrak sign on California highway.

Report: Traffic Slower Near Bay Area Express Lanes

Highway 101 was expanded to add express lanes with the promise of reducing congestion for all of the roadway’s users.

October 29, 2024 - San Francisco Chronicle

Aerial view of the San Francisco Bay with Hayward Bridge and Foster City in San Mateo County, California.

Converting a Freeway Lane to a Toll Lane: No Easy Task!

The San Mateo County Transportation Authority wants to extend its new express toll lanes north to the San Francisco border. The two build options are widening Highway 101 or converting an existing lane in each direction. One is essentially illegal.

November 1, 2023 - San Mateo Daily Journal

A highway sign reads with directions to reach San Francisco to the north and San Jose to the south--both on Highway 101.

101 Freeway in California Slower Than Ever After Widening, Locals Say

Induced demand strikes again.

April 19, 2023 - Streetsblog SF

A toll payment facility in Florida.

Tolling All Lanes

Bay Area transportation planners are studying a radical idea to reduce traffic congestion and fund driving alternatives: tolling all lanes on a freeway. Even more radical, the plan considers tolling parallel roads.

March 21, 2023 - San Francisco Chronicle

Train Buffs: Do You Know What a ZEMU Is?

In addition to commuter trains hauled by an electric or diesel-powered locomotive, there are EMUs and DMUs, and come 2021, for the first time in North America, there should be a ZEMU thanks in part to a $30 million California transportation grant.

May 1, 2018 - California Assembly Press Release

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

Public is Receptive to Plans for Express Lanes on Hwy 101 in Bay Area

Caltrans hopes to build two 14-mile high-occupancy toll lanes on Hwy 101 in San Mateo County, one of the region's most congested corridors that lacks carpool lanes. The $534 million project would begin construction in 2019.

December 16, 2017 - The Daily Journal

New Bay Area Commuter Rail Service Begins Today

Sonoma-Marin Area Rail Transit (SMART) train is set to start service Friday, running between Sonoma and Marin Counties in the Bay Area. Future extensions are planned that to take it to Larkspur for ferry service to San Francisco.

August 25, 2017 - SF Gate

Google's Loss is LinkedIn's Gain in Silicon Valley

The city of Mountain View chose to allot most of the redevelopment rights in its much sought-after North Bayshore area not to the city's largest employer and taxpayer but to LinkedIn's more conventional proposal.

May 19, 2015 - The New York Times - Bits

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.

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