Introduce or expand transportation options that are available to the public and run on a scheduled timetable (e.g., buses, trains, ferries, rapid transit, etc.)
Prevent radon from entering occupied buildings and reduce existing indoor air radon levels via soil depressurization, home or room pressurization, heat recovery ventilation, etc.
Use counseling, informational materials, etc. to inform smokers and non-smokers of the harms of secondhand smoke and encourage them to implement home smoking bans