Geometric visibility definition

Geometric visibility. Horizontal angle: For the two rear position lamps: either 45° inwards and 80° outwards, or 80° inwards and 45° outwards. The horizontal inward angle may be reduced to 30° if the shape of the bodywork makes it impossible to reach 45°. Vertical angle: 15° above and below the horizontal. The angle below the horizontal may be reduced to 10° if the height of the lamp above the ground is less than 1,900 mm, and to 5° if this height is less than 750 mm. 6.9.5.1. If it is impossible to observe the above position and visibility requirements, four rear position lamps may be fitted in accordance with the following installation specifications: 6.9.5.1.1. Two rear position lamps shall keep within the maximum height of 2,500 mm above the ground. A distance of at least 300 mm between the interior edges of the rear position lamps shall be observed, and they shall have a vertical angle of visibility above the horizontal of 15°. 6.9.5.1.2. The other two shall keep within a maximum height of 4,000 mm above the ground and shall be bound by the requirements of paragraph 6.9.4.1. 6.9.5.1.3. The combination of the two pairs shall meet the requirements for geometric visibility as specified in 6.9.5. above.
Geometric visibility means the angles which determine the square field in which the light- emitting surface of the lighting device is completely visible when the relevant angles (α vertical and β horizontal) are measured at the outward contour of the apparent surface and the lamp is observed from afar, however, if any obstacles is located within this field and partly obscuring the light-emitting surface, it may be accepted where it is proven that, even with such obstructions, the photometric values prescribed for the type-approval of the lighting device as component are complied with;
Geometric visibility. Horizontal angle: For the two front position (side) lamps: 10° inwards and 80° outwards. However, the angle of 10° inwards may be reduced to 5° if the shape of the bodywork makes it impossible to keep to 10°. For tractors with any overall width not exceeding 1,400 mm this angle may be reduced to 3° if the shape of the bodywork makes it impossible to keep to 10°.

Examples of Geometric visibility in a sentence

  • Height: No individual specifications.Length: According to Annex 15 of Regulation No. 69.6.22.5. Geometric visibility According to Annex 15 of RegulationNo. 69.6.22.6. Orientation: According to Annex 15 of Regulation No. 69.

  • Geometric visibility: No special requirement.6. Orientation: No special requirement.7. Light source: No special requirement8.

  • Two, complying with either the requirements of the 03 and subsequent series of amendments to UN Regulation No. 19 or the requirements of UN Regulation No. [RID]." Paragraph 6.3.5., amend to read: "6.3.5. Geometric visibility Defined by angles α and ß as specified in paragraph 0.00.0.: α = 5° upwards and downwards, ß = 45° outwards and 10° inwards.

  • It was finally decided to leave the text unchanged.5.12.1. PresenceOn vehicles with structural length < 6000mm and width < 2030 mm, optional.5.12.5. Geometric visibility, horizontalText to be aligned to ECE-R 48, with new angles β3 and β4 indicated in Annex 3 Figure 2.

  • Or if there is a mounting constraint either LHS or RHSIn height: between 600 mm to 1800 mm.6.17.4 Geometric visibility To be visible between 30 meter to180 metersfrom the rear of the tractor.6.17.5 Orientation Point of the triangle to be pointed upwards6.17.6 The size of the triangle is as per the Annex 6.

  • A6.10.5. Geometric visibility A6.10.5.1. Horizontal angle: 45° inwards and 80° outwards.

  • Height: No individual specifications.Length: According to Annex 15 of Regulation No. 69.6.24.5. Geometric visibility According to Annex 15 of RegulationNo. 69.6.24.6. Orientation: According to Annex 15 of Regulation No. 69.


More Definitions of Geometric visibility

Geometric visibility. Horizontal angle: For the two rear position (side) lamps: either 45° inwards and 80° outwards, or 80° inwards and 45° outwards.

Related to Geometric visibility

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  • Adverse impact on visibility means visibility impairment which interferes with the management, protection, preservation or enjoyment of the visi- tor’s visual experience of the Federal Class I area. This determination must be made on a case-by-case basis taking into account the geographic extent, in- tensity, duration, frequency and time of visibility impairment, and how these factors correlate with (1) times of vis- itor use of the Federal Class I area, and(2) the frequency and timing of natural conditions that reduce visibility.

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