He has filmed a bus driver jumping a red light, a mini-bus parking illegally in his cycling lane and a BMW car cutting across him to avoid heavy traffic.
Mr Spragg, a company analyst of Hyde, Greater Manchester, has reported bus drivers, taxi drivers and a council worker to their employers but has received little response - with only one letter of apology.
He said: 'I don't want people to get convicted, or to lose their licences - I just want people to realise how they are driving and how dangerous it is for cyclists.
His website is here.