ZTS-i su koherentni ako nisu u sukobu s europskim standardima, to jest oni pokrivaju područja u kojima ne postoje usklađeni standardi, usvajanje novih europskih standarda ne predviđa se u razumnom roku, gdje postojeći standardi nisu postali tržišno prihvaćeni ili gdje su ti standardi postali zastarjeli ili se jasno pokazali nedovoljnima u odnosu na podatke u vezi vigilancije ili nadzora te ondje gdje se transpozicija tehničkih specifikacija u europske standardizirane jedinice ne predviđa u razumnom roku.
CTS are coherent if they do not conflict with European standards, that is to say they cover areas where no harmonised standards exist, the adoption of new European standards is not foreseen within a reasonable period, where existing standards have not gained market uptake or where those standards have become obsolete or have been demonstrated as clearly insufficient according to vigilance or surveillance data and, where the transposition of the technical specifications into European standardisation deliverables is not foreseen within a reasonable period.not-set not-set