Smile and say to the bus driver, “Hello! Good morning!” Can that really help to avoid a bus crash? If our brain works better when we’re relaxed and happy, then a bus driver will be better able to cope with challenging situations on the road, challenging situations on the bus, when s/he is having good experiences. Besides, ask yourself: Is it useful to believe that not smiling at the bus driver is a good way to promote safer driving on the roads?