1.1. This Regulation applies to the steering equipment of vehicles of categories M, N and O.[1] 1.2.This Regulation does not apply to: 1.2.1.Steering equipment with a purely pneumatic transmission; 1.2.2.Autonomous Steering Systems as defined in paragraph 2.3.3.; 1.2.3.Steering systems exhibiting the functionality defined as ACSF of Category B2, D or E in paragraphs 2.3.4.1.3., 2.3.4.1.5., or 2.3.4.1.6., respectively, until specific provisions are introduced in this Regulation.