While the CDC recommends workers all commute by car alone, some of the largest, most intensely-used transit systems in the world are now carrying a substantial share of normal ridership while their cities crush the virus and maintain extremely low transmission rates.

The CDC recommendation is also in direct opposition to the public health imperative to reduce the particulate pollution that has contributed to the severity and racial disparities of COVID-19's impact in the U.S.

For many Americans, car commuting is not a financially viable option, and in many cities, a mass shift to solo car commuting is physically incompatible with the resumption of economic activity.

The CDC owes these Americans stronger guidance on how to safely operate transit service while carrying a large share of typical ridership.

Other nations have achieved a high degree of safety on transit, with ridership resuming even during pandemic conditions. So can the U.S.

Evidence from other cities:

Researchers "did not trace any clusters to Japan’s notoriously packed commuter trains. Oshitani says riders are usually alone and not talking to other passengers. And lately, they are all wearing masks." https://www.sciencemag.org/news/2020/05/japan-ends-its-covid-19-state-emergency

Beijing and Seoul both carried nearly 4 million metro trips daily, with rising trendlines, in April. New cases are rare.

Transit in these places is not "normal" yet, but it is safely carrying millions of people. (Chart source: https://www.washingtonpost.com/world/2020/05/08/subways-trains-buses-are-sitting-empty-around-world-its-not-clear-whether-riders-will-return/)