Plenty of ambulances would be a good start - that way when people slip up or take the mick by abusing the service, at least there's enough nice big yellow taxis left for the real cases. Any system so pared down that it only works if everyone is perfect is designed to fail - even our brains have multiple redundancy, because nature realised long ago, sh1t happens and you'd better have backups in place. Smoke detectors, insurance, the prison service, even most medical treatments acknowledge by their very existance that people screw up, make bad judgement calls, and are sometimes just plain lairy, yet this one essential piece of our lives is being stripped down to only work in a perfect society. That is just plain stooopid beyond belief. JMO. :o)