No smoking or vaping on board! For the health and safety of all our passengers, the use of cigarettes and e cigarettes is strictly prohibited on this bus. No smoking or vaping on board! For the health and safety of all our passengers, the use of cigarettes and e cigarettes is strictly prohibited on this bus. Wo darf man Dampfen oder Vapen? IQOS DE No smoking or vaping on board! For the health and safety of all our passengers, the use of cigarettes and e cigarettes is strictly prohibited on this bus.