Commission Directive 1999/23/EC of 9 April 1999 adapting to technical progress Council Directive 93/33/EEC on protective devices intended to prevent the unauthorised use of two- or three-wheel motor vehicles (Text with EEA relevance) Basic information No longer in force CELEX number: 31999L0023 Official Journal: JOL_1999_104_R_0013_006 Form: Directive Procedure number: -- Languages: bg cs da de el en et fi fr hr hu it lv lt mt nl pl pt ro sk sl es sv Dates Date of document: Date of publication: Date of effect: May 11, 1999 Entry into force - Date pub. +20 See Art 4 Date of transposition: December 31, 1999 Adoption At the latest See Art 3 January 1, 2000 Date of end of validity: Modified by Repealed by: Modifies Modifies: Affected by case Legal basis EuroVoc Vocabulary Road safety Technological change Vehicle parts Two-wheeled vehicle Motor vehicle Technical and safety conditions Internal market - Principles Transport safety Motor vehicles Approximation of laws Transport Technical barriers