A safety rating should be applied only to helmets that will save your head in an actual crash . A half shell will not . Feel free to look at statistics . I ' m just going to assume you ' re downvoting my shit because you ride with one so you look cool on your scout lol . It may save the very top of your head Wow , much DOT , very safe but believe it or not most crash impacts do not come from above and you do not tend to land on the top of your head . <| sep |> Up to a year down the line though . you only get that tax credit in April in the US so if you install in may you ' ve got $ 5000 sitting in the governments hands for 11 months . However I ' m still very much in favor of the credits , it ' s just not as good as cash .