Transportation

Air Quality & Environment

The region has come a long way in addressing its air quality and other environmental challenges. But additional work remains in order to protect public health, sensitive ecosystems, and expensive infrastructure from the effects of air and water pollution and climate change.

To address these concerns, the TPB regularly forecasts future vehicle-related emissions of several common air pollutants and coordinates efforts to keep those emissions below approved regional limits. Through its regional Green Streets Policy, the TPB is promoting and coordinating approaches to roadway design that mitigate runoff after heavy rains, which can pollute and damage local waterways. And together, COG and the TPB are working to identify strategies to reduce greenhouse gas emissions and ways to adapt to the effects of climate change that are already underway or seen as inevitable.

News & Multimedia

  • arial_dc_john_sonderman_flickr-600
    News

    Air quality conformity, explained

    February 10, 2020

    Have you ever heard us talk about air quality conformity? It’s a bit of transportation jargon that’s incredibly important for our region. But what does it...

  • Visualize_2045
    Map

    Visualize 2045: 2020 Amendment Projects Map

    January 29, 2020

    All major projects in the financially constrained element of Visualize 2045, the region's long-range transportation plan. Updated March 2020.

  • News

    TPB approves project updates in region's long-range transportation plan

    October 18, 2017

    At its monthly meeting, the National Capital Region Transportation Planning Board (TPB) at the Metropolitan Washington Council of Governments (COG) approved...

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