4. The exemption provided for in regulation 3 shall be limited to automotive short range radar equipment which —
(a)operates within the frequency band between 77 gigahertz and 81 gigahertz;
(b)emits a mean power density no greater than —
(i)-3 dBm/MHz eirp associated with a peak limit of 55 dBm eirp; and
(ii)-9 dBm/MHz eirp outside the vehicle in which it is established or installed; and
(c)does not cause undue interference to other users of the frequency band between 77 gigahertz and 81 gigahertz.