How Extreme Heat Impacts Transit

Heat waves are causing damage and delays on commuter trains from New Jersey to Dallas.

1 minute read

August 4, 2023, 6:00 AM PDT

By Diana Ionescu @aworkoffiction


Blurred image of speeding DART light rain train in Dallas, Texas

A DART train in Dallas using catenary wires. | HOUExplorer / Adobe Stock

Delays on Dallas Area Rapid Transit (DART) trains last week were potentially caused by heat, reports Zaeem Shaikh in The Dallas Morning News. “DART spokesman Gordon Shattles said that a damaged overhead catenary line near the station was to blame, and that it was harmed by the excessive heat.”

According to Shaikh, “The damaged line caused delays throughout the central business district, he said, and shuttle buses and a train shuttle are in place for passengers.” Service was back on track on Wednesday. 

As Shaikh explains, “Catenary lines are a system of overhead wires used to supply electricity to the light rail vehicles, which are equipped with a pantograph. The pantograph, attached to the roof of the vehicle, presses against the underside of the lowest overhead wire, the contact wire, according to the Southeastern Pennsylvania Transportation Authority.”

The implications for public transit as extreme heat becomes more common could be vast. In New Jersey, a similar problem has been affecting NJ Transit and Amtrak trains, stopping trains and delaying thousands of commuters.

Tuesday, August 1, 2023 in The Dallas Morning News

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

Use Code 25for25 at checkout for 25% off an annual plan!

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.

May 7, 2025 - Diana Ionescu

Person in yellow safety suit and white helmet kneels to examine water samples outdoors on a lake shore.

USGS Water Science Centers Targeted for Closure

If their work is suspended, states could lose a valuable resource for monitoring, understanding, and managing water resources.

May 1, 2025 - Inside Climate News

Wide suburban road with landscaped median and light pole banners advertising local amphitheater.

End Human Sacrifices to the Demanding Gods of Automobile Dependency and Sprawl

The U.S. has much higher traffic fatality rates than peer countries due to automobile dependency and sprawl. Better planning can reduce these human sacrifices.

April 29, 2025 - Todd Litman

Close-up of pug dog sitting on woman's lap on city bus.

Seattle Transit Asked to Clarify Pet Policy

A major dog park near a new light rail stop is prompting calls to update and clarify rules for bringing pets on Seattle-area transit systems.

May 9 - The Urbanist

Modular home being lifted with crane.

Oregon Bill Would End Bans on Manufactured Housing

The bill would prevent new developments from prohibiting mobile homes and modular housing.

May 9 - Oregon Capital Chronicle

Two people on Nashville BCycle bike share wearing helmets loking out over railing at downtown skyline.

Nashville Doesn’t Renew Bike Share Contract, Citing Lost Federal Funding

The city’s bike share system, operated by BCycle, could stop operating if the city doesn’t find a new source of funding.

May 9 - WKRN

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.