# Road Vehicles Lighting (Amendment) Regulations (Northern Ireland) 2005, Regulation 2: Amendment of the Road Vehicles Lighting Regulations (Northern Ireland) 2000


In Part I of Schedule 4 (requirements relating to obligatory dipped-beam headlamps and to optional dipped-beam headlamps to the extent specified in Part II) to the Road Vehicles Lighting Regulations (Northern Ireland) 2000, for paragraph 4 there shall be substituted –
“4. Alignment –
When a vehicle is at its kerbside weight and has a weight of 75 kg on the driver’s seat, and any manual headlamp levelling device control is set to the stop position, the alignment of every dipped-beam headlamp shall, as near as practicable, be as follows –
(a) In the case of a vehicle having a maximum speed exceeding 25 mph –
(i) if the dipped-beam headlamp bears an approval mark its aim shall be set so that the horizontal part of the cut-off of the beam pattern is inclined downwards as indicated by the vehicle manufacturer in a marking on the vehicle, as mentioned in sub-paragraph 12(b) or, where no such marking is provided –
(A) 1.3 per cent if the height of the centre of the headlamp is not more than 850 mm above the ground, or
(B) 2 per cent if the height of the centre of the headlamp is more than 850 mm above the ground;
(ii) if the dipped-beam headlamp does not bear an approval mark and the headlamp can also be used as a main-beam headlamp its aim shall be set so that the centre of the main-beam pattern is horizontal or inclined slightly below the horizontal;
(iii) if the dipped-beam headlamp does not bear an approval mark and the headlamp cannot also be used as a main-beam headlamp its aim shall be set so as not to cause undue dazzle or discomfort to other persons using the road;
(b) In the case of a vehicle having a maximum speed not exceeding 25 mph –
(i) if the dipped-beam headlamp bears an approval mark or not and the headlamp can also be used as a main-beam headlamp its aim shall be set so that the centre of the main-beam pattern is horizontal or inclined slightly below the horizontal;
(ii) if the dipped-beam headlamp bears an approval mark or not and the headlamp cannot also be used as a main-beam headlamp its aim shall be set so as not to cause undue dazzle or discomfort to other persons using the road.”.

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Source: https://www.legislation.gov.uk/nisr/2005/1/regulation/2 (the official version)
Page: https://openlegislation.uk/road-vehicles-lighting-amendment-regulations-northern-ireland-2005/regulation-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.