relevant study from the UK: http://www.cyclehelmets.org/1231.html http://www.cyclehelmets.org/1231.html "HEAT suggests that a law making helmets compulsory for

relevant study from the UK: http://www.cyclehelmets.org/1231.html http://www.cyclehelmets.org/1231.html "HEAT suggests that a law making helmets compulsory for cyclists may result in an overall increase in 253 premature deaths – 265 extra deaths from reduced cycling less 12 deaths saved among the reduced pool of cyclists receiving fatal head injuries." "The overall cost of a law would be between £ 304 million and £ 415 million per year. In addition, there would be a one-off cost to the remaining cyclists of £ 180 million to equip them with helmets"