How COVID-19 Impacted U.S. Traffic Trends

Vehicle miles traveled, collisions, and collision-related injuries have been impacted by shelter-in-place orders nationwide. The level of impact, however, largely varies by region.

1 minute read

June 7, 2020, 9:00 AM PDT

By Lee Flannery @leecflannery


Evacuated Highway 401

Kenny Louie / Wikimedia Commons

The statewide mandates put into place in March had an almost immediate effect on traffic patterns in the United States. "The stay-at-home orders generally have caused a drop in traffic volumes, as fewer people are commuting for work and engaging in personal travel," observes Eleanor Lamb. 

Lamb follows the changes in traffic trends with transportation officials from numerous states and finds that the changes in travel vary at the regional level. In California, San Francisco County didn't experience the steady increase in vehicle miles traveled that Siskiyou and Kern counties observed after Bay Area shelter-in-place mandates. Similarly, Virginia officials noted a stark reduction in travel in Northern Virginia, but a less dramatic decline in Lynchburg. 

According to Lamb, these regions have in common that "the decline in travel will have a negative effect on state transportation revenue."

Wednesday, June 3, 2020 in Transport Topics

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

Cover CM Credits, Earn Certificates, Push Your Career Forward

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1, 2025 - Honolulu Civil Beat

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.

July 9, 2025 - Diana Ionescu

Map of Haussmann's redesign of Paris in the 1850s through 1870s under Napoleon III.

In Urban Planning, AI Prompting Could be the New Design Thinking

Creativity has long been key to great urban design. What if we see AI as our new creative partner?

June 30, 2025 - Tom Sanchez

Red and white "Wildfire Evacuation Route" sign on signpost.

Cal Fire Chatbot Fails to Answer Basic Questions

An AI chatbot designed to provide information about wildfires can’t answer questions about evacuation orders, among other problems.

4 hours ago - The Markup

Protester at Echo Park Lake, Los Angeles holding sign that says "Housing is a human right"

What Happens if Trump Kills Section 8?

The Trump admin aims to slash federal rental aid by nearly half and shift distribution to states. Experts warn this could spike homelessness and destabilize communities nationwide.

5 hours ago - Shelterforce Magazine

Aerial of rainbow painted crosswalks at large intersection in Castro District, Sna Francisco, California.

Sean Duffy Targets Rainbow Crosswalks in Road Safety Efforts

Despite evidence that colorful crosswalks actually improve intersection safety — and the lack of almost any crosswalks at all on the nation’s most dangerous arterial roads — U.S. Transportation Secretary Duffy is calling on states to remove them.

6 hours ago - Streetsblog USA

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.

Home and Land Services Coordinator

Appalachian Highlands Housing Partners

Associate/Senior Planner

Gallatin County Department of Planning & Community Development

Senior Planner

Heyer Gruel & Associates PA