Acronyms 

UAP
Unique Acceptance Procedure
UIC
International Union of Railways
UN/ECE
United Nations - Economic and Social Council
UNI
Ente Nazionale Italiano di Unificazione (National Member for Italy)
UNICE
Union of Industrial and Employers’ Confederations of Europe
UNIFE
The European Railway Industry
UNMZ
Czech Office for Standards, Metrology and Testing (National Member for the Czech Republic)
UQ
Updating Questionnaire
UTE
Union Technique de l'Electricité et de la Communication