Proposal for a Supplement 17 to the 03 series and a Supplement 12 to the 04 series to insert new Paragraph 6.2.5.1.1. into UN R79. If requested by the vehicle manufacturer, the vehicle may undergo up to ten figure eight manoeuvres, where each loop of the figure is 40m diameter at 10km/h speed with intact steering equipment, before the measurement of steering efforts with a failure in the steering equipment. This amendment aims to clarify pre-test conditions for measuring steering effort under a failure condition and to stabilize power steering oil temperature, particularly for vehicles of category N₃ and M₃.

Proposal to amend para. 5.3.3.2. to clarify that steering shall remain possible with performance laid down in para. 6. for the intact steering system in case of control transmission failure, amend para. 6.1.1. to specify that tests shall be conducted on a level surface affording good adhesion at ambient temperature between 0°C and 45°C, with provisions for deviating conditions at manufacturer request with Technical Service agreement, and insert new para. 6.2.5.1.1. to permit vehicle manufacturers to request at least 10 “figure of eight” manoeuvres with 40 m diameter loops at 10 km/h speed prior to measurement of steering efforts with steering equipment failure.