Ebben valami hasonlót is mutat:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://swamprabbitexpress.org/sites/swamprabbitexpress.org/files/presentations/High-Tech-Low-Cost-DCC.pdf&ved=2ahUKEwjAnsyPsOD_AhWTSPEDHXfbCkoQFnoECCAQAQ&usg=AOvVaw19LVhK0y50CMytovTgDB0g