Basic courtesies are easily forgotten on public transport, particularly if delays are lengthy and space is tight. Do not perpetuate this. Always offer your seat to those who need it more than you do. If pregnancy or decrepitude are in any doubt, it is best to quietly vacate your seat, move away and hope that your intended recipient will gravitate towards it. Remember that proximity heightens tension and amplifies your behaviour, so be considerate if using a mobile phone, eating, drinking, listening to music or carrying outsized luggage. If a fellow passenger wrongs you, ignore it and avoid confrontation. Smile and thank others who show forbearance or gestures of goodwill, including the driver and any staff.