There are countless examples of similar requirements. The license requirement for driving is, for example, a specific instruction how to do something. The law d

There are countless examples of similar requirements. The license requirement for driving is, for example, a specific instruction how to do something. The law doesn’t just say “must be capable to safely operate a car”. I bet building codes are specific with regards to materials being used. Rules of the road require you to use turn signals to, well, signal turning, even if you could communicate the same with other means.