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Departmental DMUs


Over the years many vehicles saw departmental use in a wide range of duties: research, route learning, sandite, even mess coaches. More details can be found on the individual class pages.

The table below is sorted by original number, you can also view it sorted by departmental number

Original Number   New Number   Set No. Class Vehicle Type Details
50015   TDB977775  114 DMBS Automatic Train Protection Test Unit development and training vehicle, then circa 1996 became a route learning and inspection saloon at Bescot.
50036   ADB977769  114 DMBS Test Unit
50063   RDB977637  116 DMBS Claimed by Derby RTC for possible Civil Engineering use. Numbers never carried.
50093   TDB977829  T004 116 DMS Sandite
50119   RDB977636  116 DMS Claimed by Derby RTC for possible Civil Engineering use. Numbers never carried.
50134   TDB977538  111 DMBS Sandite / Route Learner
50135   TDB977539  111 DMBS Sandite / Route Learner
50137   TDB977540  111 DMBS Sandite / Route Learner
50167   DB977392  101 DMBS Ultrasonic Test Train
50193   DB977898  992 / 960992 101 DMC Sandite / Route Learner
50197   ADB977652  101 DMC Sandite / Route Learner
50200   DB977901  994 / 960994 101 DMBS Sandite / Route Learner
50203   DB977897  992 / 960992 101 DMBS Sandite / Route Learner
50208   DB977903  995 / 960995 101 DMBS Sandite / Route Learner
50222   RDB977693  901002 101 DMBS Lab Coach 19 - "Iris 2"
50231   DB977902  994 / 960994 101 DMBS Sandite / Route Learner
50246   DB977393  101 DMBS Ultrasonic Test Train (not used)
50259   TDB977535  101 DMBS Sandite / Route Learner
50290   ADB977651  101 DMBS Sandite / Route Learner
50291   DB977904  995 / 960995 101 DMBS Sandite / Route Learner
50295   TDB977536  101 DMBS Sandite / Route Learner
50308   DB977895  991 / 960991 101 DMBS Sandite / Route Learner
50320   TDB977537  101 DMBS Sandite / Route Learner
50321   DB977900  993 / 960993 101 DMC Sandite / Route Learner
50331   DB977896  991 / 960991 101 DMC Sandite / Route Learner
50338   RDB977694  901002 101 DMC Lab Coach 19 - "Iris 2"
50396   RDB975089  103 DMBS Rail Top "Trim" Lab Coach 5 - Track recording Car with 975090 (ex-56162)
50397   DB975137  103 DMBS CCE Viaduct Inspection Unit No.1. The departmental number was never carried by the vehicle.
50416   TDB975005  109 DMBS ER General Manager's Saloon
50422   ADB977344  104 DMBS RTC use - M&EE Test Unit
50475   ADB977342  104 DMBS Carriage Washing Test Coach
50506   ADB977343  104 DMC M&EE Test Unit
50626   ADB977745  108 DMBS Sandite / Route Learner
50627   ADB977853  LO911 108 DMBS Route Learner
50629   TDB977820  A / 923 108 DMBS Sandite / Route Learner
50642   ADB977839  LO901 108 DMC Sandite / Route Learner
50881   TDB977825  T005 116 DMS Sandite
50886   TDB977827  T003 116 DMS Sandite
50924   ADB977747  108 DMBS Sandite / Route Learner
50926   ADB977814  LO909 108 DMBS Sandite / Route Learner
50929   ADB977746  LO902 108 DMBS Sandite / Route Learner
50939   ADB977818  B / 922 108 DMBS Sandite / Route Learner
50941   ADB977836  LO910 108 DMBS Sandite / Route Learner
50944   ADB977766  LO904 108 DMBS Sandite / Route Learner
50950   ADB977748  LO902 108 DMBS Sandite / Route Learner
50956   ADB977811  LO907 108 DMBS Sandite / Route Learner
50957   ADB977751  108 DMBS Sandite / Route Learner
50958   ADB977809  LO906 108 DMBS Sandite / Route Learner
50959   ADB977749  108 DMBS Sandite / Route Learner
50963   ADB977750  LO903 108 DMBS Sandite / Route Learner
50981   ADB977838  LO910 108 DMBS Sandite / Route Learner
50982   ADB977816  C / 921 108 DMBS Sandite / Route Learner
51115   TDB975348  100 DMBS Inspection Saloon. Returned to passenger use in March 1976
51116   DB975349  100 DMBS ER RCE Inspection Saloon paired with 975539 (ex-56101)
51122   DB975664  100 DMBS RCE Inspection saloon, ER General Managers Saloon paired with 975637 (ex-56300)
51138   977921  116 DMBS Number allocated but conversion never happened
51153   ADB977843  T009 116 DMS Sandite
51260   TDB977453  105 DMBS Driver Training / Route Learner
51286   TDB977123  105 DMBS Driver Training / Route Learner
51296   TDB977124  105 DMBS Driver Training / Route Learner
51306   ADB977752  T007 118 DMBS Sandite / Route Learner
51321   ADB977753  T007 118 DMS Sandite / Route Learner
51371   977987  960301 117 DMBS Water Jetting Train
51375   977992  960301 117 DMBS Water Jetting Train
51413   977988  960301 117 DMS Water Jetting Train
51427   DB977899  993 / 960993 101 DMBS Sandite / Route Learner
51433   DB977391  101 DMBS Ultrasonic Test Train
51464   TDB977607  101 DMBS Route Learner
51525   TDB977608  101 DMC Route Learner
51561   TDB977823  D / 924 108 DMC Sandite / Route Learner
51563   TDB977822  D / 924 108 DMC Sandite / Route Learner
51567   ADB977854  LO911 108 DMC Route Learner
51824   ADB977611  110 DMBC Sandite
51826   ADB977613  110 DMBC Sandite
51838   ADB977612  110 DMC Sandite
51901   ADB977810  LO907 108 DMBS Sandite / Route Learner
51903   ADB977808  LO906 108 DMBS Sandite / Route Learner
51906   ADB977744  LO901 108 DMBS Sandite / Route Learner
51911   ADB977768  LO903 108 DMBS Sandite / Route Learner
51932   ADB977840  925 108 DMBS Sandite
51937   ADB977806  LO905 108 DMBS Sandite / Route Learner
51938   ADB977765  LO904 108 DMBS Sandite / Route Learner
51945   ADB977812  LO908 108 DMBS Sandite / Route Learner
51985   ADB977756  107 DMBS Sandite
51990   ADB977830  S002 107 DMBS Sandite
51992   ADB977758  107 DMBS Sandite
51993   ADB977834  S003 107 DMBS Sandite
52005   ADB977832  S001 107 DMBS Sandite
52012   ADB977835  S003 107 DMC Sandite
52014   RDB977225  107 DMC Laboratory coach - conversion abandoned
52023   ADB977762  107 DMC Sandite
52025   ADB977833  S001 107 DMC Sandite
52028   ADB977757  107 DMC Sandite
52030   ADB977831  S002 107 DMC Sandite
52032   RDB977227  107 DMC Laboratory coach - conversion abandoned
52046   TDB977819  B / 922 108 DMC Sandite / Route Learner
52047   ADB977841  925 108 DMC Sandite
52053   ADB977807  LO905 108 DMC Sandite / Route Learner
52058   TDB977821  A / 923 108 DMC Sandite / Route Learner
52059   ADB977815  LO909 108 DMC Sandite / Route Learner
52060   ADB977813  LO908 108 DMC Sandite / Route Learner
52061   ADB977817  C / 921 108 DMC Sandite / Route Learner
52076   ADB977614  110 DMC Sandite
55001   TDB975023  01 122 DMBS Route Learner. Erroneously carried number DB975073 until April 1971.
55001   TDB975073  122 DMBS This number was not allocated to this vehicle, but carried on 975023 by mistake.
55007   TDB977223  122 DMBS Driver Training / Route Learner / Sandite
55008   TDB975309  122 DMBS Route Learner
55010   TDB975310  122 DMBS Route Learner
55012   977941  122 DMBS Route Learner for Loadhaul. Allocated 977941 in April 2004 but number never carried.
55013   TDB975998  122 DMBS Route Learner
55014   TDB975994  122 DMBS Route Learner, Test & Stores car for Class 150 units
55015   TDB977177  122 DMBS Driver Training / Route Learner. Carried the name "Sandra"
55016   TDB975540  122 DMBS Route Learner
55017   TDB975227  122 DMBS Route Learner
55019   TDB / ADB975042  960015 122 DMBS Route Learner (TDB) then Sandite (ADB) from 8/93
55020   ADB977722  960002 121 DMBS Sandite / Route Learner. Returned to passenger use.
55021   ADB977723  960021 121 DMBS Sandite / Route Learner
55022   DB977873  960014 121 DMBS Sandite / Route Learner
55024   ADB977858  960010 121 DMBS Sandite / Route Learner
55025   ADB977859  960011 121 DMBS Sandite / Route Learner till 2000. Video Survey Unit for Balfour Beatty till 2004, then Route Learner again. Nicknamed 'Pandora'
55026   TDB977824  T005 121 DMBS Sandite
55027   977975  960302 121 DMBS Severn Tunnel Emergency Unit
55028   ADB977860  960012 121 DMBS Sandite / Route Learner
55029   977968  121 DMBS Camera Unit (Eurailscout GB)
55030   ADB977866  960013 121 DMBS Sandite / Route Learner
55031   977976  960303 121 DMBS Severn Tunnel Emergency Unit
55032   ADB977842  T007 121 DMBS Sandite, later preserved then returned to passenger use
55033   TDB977826  T003 121 DMBS Sandite
55034   DB977828  T004 121 DMBS Sandite
55035   ADB975659  L103 / L135 121 DMBS Route Learner
55997   RDB975385  129 DPU Laboratory Coach 9 "Hydra"
56015   TDB977776  114 DTC Automatic Train Protection Test Unit development and training vehicle, then circa 1996 became a route learning and inspection saloon at Bescot.
56027   ADB977770  114 DTC Test Unit
56101   DB975539  100 DTC ER RCE Inspection Saloon paired with 975349 (ex-51116)
56106   ADB977191  100 DTC Crewe Works Test Train Coach
56111   TDB977196  100 DTC Special Instruction coach MOD Moreton-on-Lugg
56129   ADB977114  105 DTC Sandite
56142   ADB977048  105 DTC Sandite
56145   ADB977052  105 DTC Sandite
56156   ADB977047  103 DTC Sandite
56160   DB975228  103 DTC CCE Viaduct Inspection Unit
56162   RDB975090  103 DTC Rail Top "Trim" Lab Coach 5 - Track recording Car with 975089 (ex-50396)
56171   TDB975006  109 DTC ER General Manager's Saloon
56182   ADB977554  104 DTC Sandite
56183   ADB977555  104 DTC Sandite
56281   ADB977615  121 DTS Sandite
56285   TDB977486  960006 121 DTS Sandite
56286   TDB977466  121 DTS Sandite
56300   DB975637  100 DTC RCE Inspection saloon, ER General Managers Saloon paired with 975664 (ex-51122)
56315   FA99900  100 DTC Private Owner - Fisons Weedkiller train
56342   042222  101 DTC Internal User
56427   ADB977051  105 DTC Sandite
56440   TDB977454  105 DTC Route Learner
56444   TDB977125  105 DTC Driver Training / Route Learner
56445   TDB977126  105 DTC Driver Training / Route Learner
56448   ADB977050  105 DTC Sandite
56474   ADB977049  105 DTC Sandite
59389   024949  108 TS Internal user vehicle - grounded at Tyseley
59458   RDB975993  125 TS Battery storage coach ay RTC then fire tests coach
59466   RDB975964  125 TS Storage coach at ZD, fire tests coach
59787   RDB977226  107 TS Laboratory coach - conversion abandoned
59828   ADB / DB975327  123 TSRB WR RCE staff & dormitory coach for rail profiler DX79105 as ADB, later Stores Coach as DB
79018   DB975007  Derby Lightweight DMBS Ultrasonic Test Train
79047   RDB975018  Met-Camm Lightweight DMBS Lab 21 Plasma Torch Research
79053   RDB975019  Met-Camm Lightweight DMBS Lab 21 Plasma Torch Research
79098   ADB975426  126 DMBS Mess coach
79185   DB975012  Derby Lightweight DMBS Brake trials test coach
79250   TDB975013  Derby Lightweight DTS Staff messroom, Craigentinny
79252   TDB975014  Derby Lightweight DTS Staff messroom
79612   DB975008  Derby Lightweight DTC Ultrasonic Test Train
79649   999510  Derby Lightweight DTC Special Saloon
79900   RDB975010  Derby Lightweight DMBS "Iris" Radio tests
79998   RDB975003  BMU DMBS Laboratory 16 "Gemini"
79999   RDB975004  BMU DTC Laboratory 16 "Gemini"
999507   DB / RDV999507  Wickham Railbus "Elliot" Track recording car

The number prefixes indicated the owning department, although these were not necessarily carried. The meaning of these are:

ADB Regional Mechanical and Electrical Engineer;
DB Regional Civil Engineer;
RDB Research Department;
TDB Traffic Department.

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