1. http://www.railway-technology.com/projects/european-rail-traffic-managementsystem-ertms
2. EN 62290-1:2014 Railway applications. Urban Guided Transport Management and Command/Control Systems. System Principles and Fundamental Concepts
3. González FJ. Señalización ferroviaria: del guardagujas a la operación sin conductor; Fundación Dialnet. 2008
4. WIT press. Advanced Train Control Systems. 1st ed. WIT press; 2010
5. European Railway Agency. ERTMS GSM-R QoS Test Specification [Internet]. July 2016. Available from: http://www.era.europa.eu/Document-Register/Pages/O_2475.aspx