IEC 62290-1:2014 provides an introduction to the standard and deals with the main concepts, the system definition, the principles and the basic functions of UGTMSs (Urban Guided Transport Management and Command/Control Systems) for use in urban guided passenger transport lines and networks. This part of IEC 62290 is applicable for new lines or for upgrading existing signalling and command control systems. The main technical changes with regard to the previous edition are as follows: removing the concept of grade of line, aligning IEC 62290-1 with IEC 62290-2.