Public transportation such as airplanes and trains, with their high crowd density and confined spaces, are at higher risk of exposure to the virus. Those who are able to do so may choose to return by private car. If you must travel by public transportation, you need to take proper protective measures and reduce your exposure to others. When going to public places and taking public transportation, you must wear a mask properly, and you can keep several masks on hand for replacement. Carry disinfectant items such as waterless hand sanitizer containing alcohol and disinfectant wipes with you. If the ride is short, it is recommended that you eat before getting on the bus. If the journey is long and you need to eat, be sure to wash your hands before the meal. It is recommended to bring your own cleaning bag to dispose of personal miscellaneous items and garbage, and not to spit anywhere.