Paul Smith, a respected campaigner against speed cameras and founder of safespeed.org.uk, died yesterday aged 52. Smith was well known for his belief that speed cameras reduced road safety, and that safe driving wasn't just about speed, but about improving road safety through measures such as better driver training.The specific cause of Smith's death is not known, though it's believed he died of a heart attack or stroke. His partner of 22 years, Claire Armstrong, has already said she will continue his work.