Transport for London Buses

System Name: Transport for London Buses
Location: London, EN
County: Greater London
System Type: DMR Tier 3 Standard
System Voice: DMR
Last Updated: September 9, 2023, 5:25 pm CDT   [Updated General System Details]
System Notes

In March 2019, Tait completed the digital upgrade of Transport for London's surface fleet, fitting London's red buses with digital radio communications.

The radio system provides robust and reliable voice and data connections between all buses and TfL's network of dispatch and control centers. Tait designed the new system to be both a resilient system for today's needs and as a digital platform for future applications.

The on-bus equipment is based on the Tait Unified Vehicle platform, which gives access to multiple bearers in addition to mobile radio, including cellular and WiFi, and the ability to run custom applications to improve operational efficiency and the service provided to travelers.

For a communications network of this size, proactive monitoring and management is essential. To ensure the network is running smoothly and its performance and TfL's compliance to KPIs could be measured, the network is managed and monitored by Tait EnableInsight software and Tait Managed Services around the clock.

Sites and Frequencies

Red (c) are control channel capable frequencies
Site Name Freqs
2185 (889) Bushney Heath 139.53125c139.64375139.75625139.86875139.99375140.11875139.3125c 
2193 (891) Crystal Palace - BBC 139.59375c139.70625139.78125139.81875139.89375139.93125140.01875140.03125
  140.05625140.14375140.18125140.43125    
2201 (899) Guys Hospital 139.55625c139.60625139.61875139.71875139.73125139.83125139.84375139.94375
  139.95625140.06875140.19375140.20625140.24375140.28125140.31875140.33125
  140.39375140.40625140.44375140.45625    
2209 (8A1) Tolworth 139.58125c139.69375139.80625139.91875140.04375   
2217 (8A9) Shooters Hill 139.51875c139.63125139.74375139.85625140.10625140.23125  
2225 (8B1) Alexandra Palace 139.54375c139.65625139.76875139.88125140.00625140.08125140.13125140.25625
  140.34375140.46875140.48125     
2233 (8B9) Northolt 140.26875c140.29375140.41875     
2241 (8C1) Faggs Lane (Feltham) 139.96875c140.09375140.21875     
2249 (8C9) Mill House 139.56875c139.68125139.79375139.90625140.15625140.35625  
2257 (8D1) Unknown 139.98125c140.16875140.30125     

Talkgroups

DEC Mode Alpha TagDescriptionTag
12T1ST CAP1ST CAPITAL BUSES : CAPITAL , CENTREWESTTransportation
13TAbellio SrryAbellio SurreyTransportation
16TQUAL LINEQUALITY LINE BUSESTransportation
19TE THAMESEAST THAMES BUSESTransportation
25TAbellio LdnAbellio LondonTransportation
28TSTAGECOACHSTAGECOACHTransportation
32TARRIVA S ENDARRIVA : SOUTHENDTransportation
35TARRIVA SHIREARRIVA : SHIRESTransportation
36TGo Ahead LdnGO AHEAD : LondonTransportation
40TLondon UtdLondon UnitedTransportation
42TMETROBUSMETROBUSTransportation
44TMETROLINEMETROLINETransportation
45TARRIVA LONDNARRIVA - LONDONTransportation
55TTRANSDEVTRANSDEV : STAGECOACHTransportation
78TARRIVA ORIGARRIVA : ORIGINAL TOURSTransportation
79TCT PLUSCT PLUSTransportation
80TNCP CHALLNGRNCP CHALLENGERTransportation
127TRADIO ENGRADIO ENGINEERTransportation