The retro-reflecting device shall be mounted in a manner similar to the way in which it is mounted on the vehicle, but with the lens faced horizontal and directed upwards.
Helkurseade paigaldatakse nii, nagu asjaomast helkurseadet sõidukile paigaldatakse, kuid laternaklaas peab jääma horisontaalselt suunaga ülespoole.