Development of a New Methodology for Measuring the Dimensions of Lighting Components in Construction Equipment Vehicles (CEVs) as per IS/ISO 12509:2004 using 3-Dimensional Planar Laser.

The light and light signalling devices installation test as per ISO 12509:2004 for Earth Moving Machinery / Construction Equipment Vehicles (CEV’s) is a mandatory test to ensure the safety of both road users and operators. Considering the shape and size of CEV’s, accurate measurement of lighting installation requirements is crucial for ensuring safety and regulatory compliance. The international standard ISO 12509:2004 specifies detailed criteria for these installations, including precise dimensional measurements of lighting components to guarantee optimal visibility and safety. Considering shape and Size of CEV’s, the accurate measurement of lighting installation requirements is crucial for regulatory compliance. ISO 12509:2004 outlines specific criteria for these installations requirements of lighting components, including the precise measurement of various dimensions to ensure optimal visibility and safety. Among these dimensional requirements, the dimension 'E' i.e., the “distance between the outer edges of the machine and the illuminating surface of the lighting device” plays a critical role in the performance of vehicle lighting systems. Traditional methods of measuring this dimension, such as using measuring tape and long straight rod have limitations in terms of precision and consistency due to machine size and shape. This paper presents a method development approach utilizing a 3-Dimensional planar laser for measuring dimension 'E' in construction equipment vehicles. Measurement through the planar laser method is found to offer significantly higher accuracy compared to conventional measuring techniques, particularly when applied to the complex shapes and sizes of CEV’s such as Graders and Backhoe Loaders. This approach not only enhances the measurement accuracy but also improves the efficiency of the testing process. The paper discusses the methodology, results, comparison of 2 measuring methods and potential applications of Planar laser in the context of ISO 12509:2004, offering a promising alternative method for testing and certification of Construction Equipment vehicle’s lighting systems.