but things are more dull as a result with less invvoation and conversly more damage to the enviroment. modern cars are only achiving the same mpg on average as cars from the 80's not becuase the engines aren't anymore efficent or better designed in fact the opposite is true but because with SIPS airbags torsion bars impact intrusions devices A/C etc they are a great deal heavier....
at some point we have to weight off the material cost vs the potential for injury to indivudual and also the practicalities of it. our enviroment demands it. getting rid of desieal powered buses which as the articule discusses isn't eco friendly at all, is a start, would improve air quality and i suspect asthema and other related breathign problems no end.
added to that removing the bloody terrible bendy bueses from Londons streets which are diabolical and really not designed for London at all has to be an advancement.
there'd be nothing to stop a barrier being on the top deck which wouldn't relase (except in emergancy) to prevent stair movment duirn transit and the same for the main downstairs area... sure people would still jump on the platform, but then that's their look out... you don't stop tube trains from running becuase someone might jump in front of them...