That depot closed in 1999 .
After two years of temporary accommodation in leased facilities , CTP 's trolleybuses moved to Teverola depot in 2001 , but the trolleybus routes retained their longstanding M prefix to avoid confusion among riders .
That depot closed in 1999 , and after two years of temporary accommodation in leased facilities , CTP 's trolleybuses moved to Teverola depot in 2001 , but the trolleybus routes retained their longstanding M prefix to avoid confusion among riders .