[header] How to disinfect public surfaces [title] Don't directly touch surfaces. [step] Cars, buses, subways, and the like are potentially dirty places, often housing germs on upholstered seats, flooring, and railings which thousands of human hands have touched. [title] Consider standing whenever possible, or sitting on a newspaper or other disposable object. 
[step] Instead of grabbing onto handrails with one's hands, wrap a clothing-clad arm around the pole to keep hands clean. The danger with this, of course, is slipping and losing your balance should the transport stop quickly.