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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 departmental number, you can also view it sorted by original number

New Number   Original Number Set No. Class Vehicle Type Details
024949   59389 108 TS Internal user vehicle - grounded at Tyseley
042222   56342 101 DTC Internal User
FA99900   56315 100 DTC Private Owner - Fisons Weedkiller train
RDB975003   79998 BMU DMBS Laboratory 16 "Gemini"
RDB975004   79999 BMU DTC Laboratory 16 "Gemini"
TDB975005   50416 109 DMBS ER General Manager's Saloon
TDB975006   56171 109 DTC ER General Manager's Saloon
DB975007   79018 Derby Lightweight DMBS Ultrasonic Test Train
DB975008   79612 Derby Lightweight DTC Ultrasonic Test Train
RDB975010   79900 Derby Lightweight DMBS "Iris" Radio tests
DB975012   79185 Derby Lightweight DMBS Brake trials test coach
TDB975013   79250 Derby Lightweight DTS Staff messroom, Craigentinny
TDB975014   79252 Derby Lightweight DTS Staff messroom
RDB975018   79047 Met-Camm Lightweight DMBS Lab 21 Plasma Torch Research
RDB975019   79053 Met-Camm Lightweight DMBS Lab 21 Plasma Torch Research
TDB975023   55001 01 122 DMBS Route Learner. Erroneously carried number DB975073 until April 1971.
TDB / ADB975042   55019 960015 122 DMBS Route Learner (TDB) then Sandite (ADB) from 8/93
TDB975073   55001 122 DMBS This number was not allocated to this vehicle, but carried on 975023 by mistake.
RDB975089   50396 103 DMBS Rail Top "Trim" Lab Coach 5 - Track recording Car with 975090 (ex-56162)
RDB975090   56162 103 DTC Rail Top "Trim" Lab Coach 5 - Track recording Car with 975090 (ex-50396)
DB975137   50397 103 DMBS CCE Viaduct Inspection Unit No.1. The departmental number was never carried by the vehicle.
TDB975227   55017 122 DMBS Route Learner
DB975228   56160 103 DTC CCE Viaduct Inspection Unit
TDB975309   55008 122 DMBS Route Learner
TDB975310   55010 122 DMBS Route Learner
ADB / DB975327   59828 123 TSRB WR RCE staff & dormitory coach for rail profiler DX79105 as ADB, later Stores Coach as DB
TDB975348   51115 100 DMBS Inspection Saloon. Returned to passenger use in March 1976
DB975349   51116 100 DMBS ER RCE Inspection Saloon paired with 975539 (ex-56101)
RDB975385   55997 129 DPU Laboratory Coach 9 "Hydra"
ADB975426   79098 126 DMBS Mess coach
DB975539   56101 100 DTC ER RCE Inspection Saloon paired with 975349 (ex-51116)
TDB975540   55016 122 DMBS Route Learner
DB975637   56300 100 DTC RCE Inspection saloon, ER General Managers Saloon paired with 975664 (ex-51122)
ADB975659   55035 L103 / L135 121 DMBS Route Learner
DB975664   51122 100 DMBS RCE Inspection saloon, ER General Managers Saloon paired with 975637 (ex-56300)
RDB975964   59466 125 TS Storage coach at ZD, fire tests coach
RDB975993   59458 125 TS Fire tests coach
TDB975994   55014 122 DMBS Route Learner, Test & Stores car for Class 150 units
TDB975998   55013 122 DMBS Route Learner
ADB977047   56156 103 DTC Sandite
ADB977048   56142 105 DTC Sandite
ADB977049   56474 105 DTC Sandite
ADB977050   56448 105 DTC Sandite
ADB977051   56427 105 DTC Sandite
ADB977052   56145 105 DTC Sandite
ADB977114   56129 105 DTC Sandite
TDB977123   51286 105 DMBS Driver Training / Route Learner
TDB977124   51296 105 DMBS Driver Training / Route Learner
TDB977125   56444 105 DTC Driver Training / Route Learner
TDB977126   56445 105 DTC Driver Training / Route Learner
TDB977177   55015 122 DMBS Driver Training / Route Learner. Carried the name "Sandra"
ADB977191   56106 100 DTC Crewe Works Test Train Coach
TDB977196   56111 100 DTC Special Instruction coach MOD Moreton-on-Lugg
TDB977223   55007 122 DMBS Driver Training / Route Learner / Sandite
RDB977225   52014 107 DMC Laboratory coach - conversion abandoned
RDB977226   59787 107 TS Laboratory coach - conversion abandoned
RDB977227   52032 107 DMC Laboratory coach - conversion abandoned
ADB977342   50475 104 DMBS Carriage Washing Test Coach
ADB977343   50506 104 DMC M&EE Test Unit
ADB977344   50422 104 DMBS RTC use - M&EE Test Unit
DB977391   51433 101 DMBS Ultrasonic Test Train
DB977392   50167 101 DMBS Ultrasonic Test Train
DB977393   50246 101 DMBS Ultrasonic Test Train (not used)
TDB977453   51260 105 DMBS Driver Training / Route Learner
TDB977454   56440 105 DTC Route Learner
TDB977466   56286 121 DTS Sandite
TDB977486   56285 960006 121 DTS Sandite
TDB977535   50259 101 DMBS Sandite / Route Learner
TDB977536   50295 101 DMBS Sandite / Route Learner
TDB977537   50320 101 DMBS Sandite / Route Learner
TDB977538   50134 111 DMBS Sandite / Route Learner
TDB977539   50135 111 DMBS Sandite / Route Learner
TDB977540   50137 111 DMBS Sandite / Route Learner
ADB977554   56182 104 DTC Sandite
ADB977555   56183 104 DTC Sandite
TDB977607   51464 101 DMBS Route Learner
TDB977608   51525 101 DMC Route Learner
ADB977611   51824 110 DMBC Sandite
ADB977612   51838 110 DMC Sandite
ADB977613   51826 110 DMBC Sandite
ADB977614   52076 110 DMC Sandite
ADB977615   56281 121 DTS Sandite
RDB977636   50119 116 DMS Claimed by Derby RTC for possible Civil Engineering use. Numbers never carried.
RDB977637   50063 116 DMBS Claimed by Derby RTC for possible Civil Engineering use. Numbers never carried.
ADB977651   50290 101 DMBS Sandite / Route Learner
ADB977652   50197 101 DMC Sandite / Route Learner
RDB977693   50222 901002 101 DMBS Lab Coach 19 - "Iris 2"
RDB977694   50338 901002 101 DMC Lab Coach 19 - "Iris 2"
ADB977722   55020 960002 121 DMBS Sandite / Route Learner. Returned to passenger use.
ADB977723   55021 960021 121 DMBS Sandite / Route Learner
ADB977744   51906 LO901 108 DMBS Sandite / Route Learner
ADB977745   50626 108 DMBS Sandite / Route Learner
ADB977746   50929 LO902 108 DMBS Sandite / Route Learner
ADB977747   50924 108 DMBS Sandite / Route Learner
ADB977748   50950 LO902 108 DMBS Sandite / Route Learner
ADB977749   50959 108 DMBS Sandite / Route Learner
ADB977750   50963 LO903 108 DMBS Sandite / Route Learner
ADB977751   50957 108 DMBS Sandite / Route Learner
ADB977752   51306 T007 118 DMBS Sandite / Route Learner
ADB977753   51321 T007 118 DMS Sandite / Route Learner
ADB977756   51985 107 DMBS Sandite
ADB977757   52028 107 DMC Sandite
ADB977758   51992 107 DMBS Sandite
ADB977762   52023 107 DMC Sandite
ADB977765   51938 LO904 108 DMBS Sandite / Route Learner
ADB977766   50944 LO904 108 DMBS Sandite / Route Learner
ADB977768   51911 LO903 108 DMBS Sandite / Route Learner
ADB977769   50036 114 DMBS Test Unit
ADB977770   56027 114 DTC Test Unit
TDB977775   50015 114 DMBS Formerly parcels vehicle 55929. APT development and training vehicle, then became a route learning and inspection saloon, and finally an Automatic Train Protection Test Unit
TDB977776   56015 114 DTC Formerly parcels vehicle 54904. APT development and training vehicle, then became a route learning and inspection saloon, and finally an Automatic Train Protection Test Unit
ADB977806   51937 LO905 108 DMBS Sandite / Route Learner
ADB977807   52053 LO905 108 DMC Sandite / Route Learner
ADB977808   51903 LO906 108 DMBS Sandite / Route Learner
ADB977809   50958 LO906 108 DMBS Sandite / Route Learner
ADB977810   51901 LO907 108 DMBS Sandite / Route Learner
ADB977811   50956 LO907 108 DMBS Sandite / Route Learner
ADB977812   51945 LO908 108 DMBS Sandite / Route Learner
ADB977813   52060 LO908 108 DMC Sandite / Route Learner
ADB977814   50926 LO909 108 DMBS Sandite / Route Learner
ADB977815   52059 LO909 108 DMC Sandite / Route Learner
ADB977816   50982 C / 921 108 DMBS Sandite / Route Learner
ADB977817   52061 C / 921 108 DMC Sandite / Route Learner
ADB977818   50939 B / 922 108 DMBS Sandite / Route Learner
TDB977819   52046 B / 922 108 DMC Sandite / Route Learner
TDB977820   50629 A / 923 108 DMBS Sandite / Route Learner
TDB977821   52058 A / 923 108 DMC Sandite / Route Learner
TDB977822   51563 D / 924 108 DMC Sandite / Route Learner
TDB977823   51561 D / 924 108 DMC Sandite / Route Learner
TDB977824   55026 T005 121 DMBS Sandite
TDB977825   50881 T005 116 DMS Sandite
TDB977826   55033 T003 121 DMBS Sandite
TDB977827   50886 T003 116 DMS Sandite
DB977828   55034 T004 121 DMBS Sandite
TDB977829   50093 T004 116 DMS Sandite
ADB977830   51990 S002 107 DMBS Sandite
ADB977831   52030 S002 107 DMC Sandite
ADB977832   52005 S001 107 DMBS Sandite
ADB977833   52025 S001 107 DMC Sandite
ADB977834   51993 S003 107 DMBS Sandite
ADB977835   52012 S003 107 DMC Sandite
ADB977836   50941 LO910 108 DMBS Sandite / Route Learner
ADB977838   50981 LO910 108 DMBS Sandite / Route Learner
ADB977839   50642 LO901 108 DMC Sandite / Route Learner
ADB977840   51932 925 108 DMBS Sandite
ADB977841   52047 925 108 DMC Sandite
ADB977842   55032 T007 121 DMBS Sandite, later preserved then returned to passenger use
ADB977843   51153 T009 116 DMS Sandite
ADB977853   50627 LO911 108 DMBS Route Learner
ADB977854   51567 LO911 108 DMC Route Learner
ADB977858   55024 960010 121 DMBS Sandite / Route Learner
ADB977859   55025 960011 121 DMBS Sandite / Route Learner till 2000. Video Survey Unit for Balfour Beatty till 2004, then Route Learner again. Nicknamed 'Pandora'
ADB977860   55028 960012 121 DMBS Sandite / Route Learner
ADB977866   55030 960013 121 DMBS Sandite / Route Learner
DB977873   55022 960014 121 DMBS Sandite / Route Learner
DB977895   50308 991 / 960991 101 DMBS Sandite / Route Learner
DB977896   50331 991 / 960991 101 DMC Sandite / Route Learner
DB977897   50203 992 / 960992 101 DMBS Sandite / Route Learner
DB977898   50193 992 / 960992 101 DMC Sandite / Route Learner
DB977899   51427 993 / 960993 101 DMBS Sandite / Route Learner
DB977900   50321 993 / 960993 101 DMC Sandite / Route Learner
DB977901   50200 994 / 960994 101 DMBS Sandite / Route Learner
DB977902   50231 994 / 960994 101 DMBS Sandite / Route Learner
DB977903   50208 995 / 960995 101 DMBS Sandite / Route Learner
DB977904   50291 995 / 960995 101 DMBS Sandite / Route Learner
977921   51138 116 DMBS Number allocated but conversion never happened
977941   55012 122 DMBS Route Learner for Loadhaul. Allocated 977941 in April 2004 but number never carried.
977968   55029 121 DMBS Camera Unit (Eurailscout GB)
977975   55027 960302 121 DMBS Severn Tunnel Emergency Unit
977976   55031 960303 121 DMBS Severn Tunnel Emergency Unit
977987   51371 960301 117 DMBS Water Jetting Train
977988   51413 960301 117 DMS Water Jetting Train
977992   51375 960301 117 DMBS Water Jetting Train
DB / RDV999507   999507 Wickham Railbus "Elliot" Track recording car
999510   79649 Derby Lightweight DTC Special Saloon

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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