Good Sign has a good idea of what the industry needs. You'll know, as well as we do, how staying legal is a must in an industry constantly under scrutiny. Having the correct lettering on vehicles therefore is a must. Clear interior signs, which clearly direct or inform your passengers can help save injury and lives if the worse happens. Clear interior signs, which clearly direct or inform your passengers can help save injury and lives if the worse happens. At Good Sign, being viable is our speciality and we'll work with you to create the signs you need and not just generic ones we have on file. Our vinyl is tough enough to withstand chemical cleaning and rubs and scuffs of everyday bus use, so your signs look good for longer.