They passed a similar law here in the US (http://www.fcc.gov/encyclopedia/loud-commercials http://www.fcc.gov/encyclopedia/loud-commercials) but unfortunately,

They passed a similar law here in the US (http://www.fcc.gov/encyclopedia/loud-commercials http://www.fcc.gov/encyclopedia/loud-commercials) but unfortunately, it did not help very much because sound engineers use tricks that make the commercials meet the technical requirements while still being loud to the human ear. For example, they mix a loud opening and a quieter closing so the overall decibel level averages out but you still get startled when the commercial starts.