These are several safety measures you should keep in mind when using different modes of public transportation.
Theres no definite answer on whether one mode of transportation is safer than the other.
The CDC recommends putting a few rows of seats between you and other passengers if possible.

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you might also carry disinfectant wipes with you, Wender says.
Remember that the greater risk comes from thinking youre safe when youre not, he says.
Youre more likely to get infected from people you know than strangers on transit.
However, using public transportation again greatly depends on each individuals comfort levels.
If it’s possible for you to wait until youre vaccinated, all the better, Wender says.
The emergence of variants and the rising rates in most states are worrisome.
Should you choose to use public transit again, Its important to follow public health recommendations at all times.
Public health disease control measurements increase the safety of public transit.
For the most recent updates on COVID-19, visit ourcoronavirus news page.
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Centers for Disease Control and Prevention.When youve been fully vaccinated: how to protect yourself and others.
American Public Transportation Association.Public transit and COVID-19 pandemic: global research and best practices.
Centers for Disease Control and Prevention.Order: wearing of face masks while on conveyances and at transportation hubs.
Centers for Disease Control and Prevention.Protect yourself when using transportation.