Dangerous driveing,whats the worst youve seen

Can’t really say as everyday someone shocks me , the last 10 years the standard of driving as plumetted , no courtesy whatsoever and its not just car drivers. Why do some drivers think they have the right to barge onto the motorway from a slip road , i had it recently going uphill loaded with an artic passing me in the middle lane and another passing me on the slip road nearly taking the cab off , dont they realise that the dotted lines mean give way ffs