This may seem a bit pricey compared to others available in the catalogue but it is worth the outlay.  Has the benefit of being E marked so although technically IVA does not insist upon E marking being present on the lens covers of lights the presence of an E  marking eases the way considerably. It is bright and can be viewed from sufficient a spread of angle when viewed from the rear of the vehicle to satisfy IVA in this respect. (All taking into account that it is mounted in a compliant manner.