I'd be curious as well - my brother-in-law is a cross-country truck driver who has remained healthy - thank heavens as he is in his 60s!
Your best friends in public bathrooms are tissue and paper towels. Touch as little as possible - a given, as there are a lot of steel surfaces and handles, which we know is a problem. Wash your hands! Research tells us that only 65% of women and 31% of men wash their hands after using the restroom! Usually just a big yuk, but now it can be deadly. Remember to use a paper towel to dry your hands, turn off the faucet, and to open the door on the way out. Then discard in the trash
Do not use if possible. Especially, roadside public restrooms. The flushing toilets and hand dryers just aerosol too much to be counteracted by avoiding surfaces.
Hand wash is a must to ever. Agree with aerosolization by flushing toilets but its viral particles infectivity lacks evidence.