Commission Directive 1999/101/EC of 15 December 1999 adapting to technical progress Council Directive 70/157/EEC relating to the permissible sound level and the exhaust system of motor vehicles (Text with EEA relevance) Basic information In force CELEX number: 31999L0101 Official Journal: JOL_1999_334_R_0041_016 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: January 17, 2000 Entry into force - Date pub. + 20 See Art 4 Date of transposition: Deadline: Date of end of validity: Modified by Repealed by: Modifies Modifies: Affected by case Legal basis EuroVoc Vocabulary Motor vehicle pollution Motor vehicle Motor vehicles Approximation of laws Technical barriers Internal market - Principles Technological change Noise pollution Combustion gases Prevention of noise pollution Noise level