In case of AFS. 1.5.1. Any offset of the centre of reference of each lighting unit, with respect to the goniometer rotation axes, should be avoided. This applies especially to the vertical direction and to lighting units producing a "cut-off". 1.5.2. The photometric requirements for each single measuring point (angular position) of a lighting function or mode as specified in this Regulation apply to half of the sum of the respective measured values from all lighting units of the system applied for this function or mode, or, from all lighting units as indicated in the respective requirement; 1.5.2.1. However in those cases where a provision is specified for one side only, the division by the factor of 2 does not apply. These cases are: paragraphs 5.3.2.5.2., 5.3.2.8.1., 5.1.3.5., 5.1.3.6., 5.3.3.4.1., 5.3.5.1. of this Regulation, and note 4 of Table 9. 1.5.3. The lighting units of the system shall be measured individually; however, simultaneous measurements may be performed on two or more lighting units of an installation unit, being equipped with the same light source types with respect to their power supply (either power controlled or not), if they are sized and situated such, that their illuminating surfaces are completely contained in a rectangle of not more than 300 mm in horizontal extend and not more than 150 mm vertical extend, and, if a common centre of reference is specified by the manufacturer. 1.5.4. The system shall prior to the subsequent test procedures be set to the neutral state. 1.5.5. The system or part(s) thereof shall be so aimed before starting the measurements that the position of the "cut–off" complies with the requirements indicated in the Table 10. Parts of a system measured individually and having no "cut-off" shall be installed on the goniometer under the conditions (mounting position) specified by the applicant.
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Samples: Agreement Concerning the Adoption of Harmonized Technical United Nations Regulations for Wheeled Vehicles, Agreement Concerning the Adoption of Harmonized Technical United Nations Regulations, Agreement Concerning the Adoption of Harmonized Technical United Nations Regulations for Wheeled Vehicles