'But the final responsibility lies with the men or women behind the wheel''
Wrong.
EVERYONE should be responsible, after all bikes are also vehicles in the HWTA. It is amazing how many cyclists love to take up 1/2 lane two abreast.
who fail to signal their intentions, fail to stop and cut off motorists.
Then you have people who love to walk and text, they have zero situational awareness around them .
They all have a roll to play