The European standard EN 474:2010 states that for the operator's view earth-moving machines shall be designed in accordance with ISO 5006:2006 so that the operator has sufficient visibility from the operator's station in relation to the travel and work areas of the machine that are necessary for the intended use of the machine.
ISO 5006:2006 does not exclude camera-monitor systems. On the contrary, the standard demands them where direct vision does not comply with the visibility requirements for constructional reasons (e.g. counterweight), but allows other technical solutions to create visibility (e.g. by means of mirrors) as well. According to standardisation rules, ISO 5006 specifies performance requirements and does not contain design restrictions. Mirrors are reliable solutions that are successfully applied in many areas where visibility problems exist.
Based on the ISO 5006:2006 standard, especially camera-monitor systems were practically designed and have matured into state-of-the-art. The standard demands visual aids that comply with these requirements. As a result of this, state of the art camera systems were developed for the rough operations on site.
Currently the ISO 5006 is under revision and many new aspects deem to be relevant like the inclusion of bigger machines and indirect detection systems (e.g. ultra-sound, radar, active/passive infrared), practical experience gained, the intensification of ergonomic principles (driver's ability to absorb and process information), the adaption of the vertical test object dimension, the number of visual aids and options for the use of e.g. new visual aid systems such as top-view, birdview, person recognition systems, etc.