On-Track Machines
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A list of self-propelled track maintenance machines used in Scotland for Network Rail.
Note that 6Z0x and 7Z0x headcodes may also be used by other STP freight trains.
Liveries
CO = Orange with black and yellow
SBR = White with orange cantrail and blue sole bar
SBO = White with blue band and thin orange stripes
FE = White with purple band and thin green stripes
YN = All yellow, 'Network Rail' branded
RT = Blue & lime green, 'Network Rail' branded
| Headcode | livery | Number | Type | Name |
| Operator: Colas Rail (Train service code:53693803) | ||||
| 6J43 | CO | DR73108 | P&T 09-32-RT | |
| Operator: Swietelsky Babcock Rail (Train service code:53694201) | ||||
| 6T40 | SBR | DR73803 | P&T 08-32U-RT | Alexander Graham Bell |
| 6T41 | SBR | DR73804 | P&T 08-32U-RT | James Watt |
| 6T42 | SBR | DR73904 | P&T 08-4x4/4S-RT | Thomas Telford |
| 6T43 | SBR | DR73914 | P&T 08-4x4/4S-RT | Robert McAlpine |
| 6T44 | SBR | DR73915 | P&T 08-16/4x4C-RT | William Arrol |
| 6T45 | SBR | DR73916 | P&T 08-16/4x4C-RT | First Engineering |
| 6T46 | SBR | DR73932 | P&T 08-4x4/4S-RT | |
| 6T47 | SBR | DR73933 | P&T 08-16/4x4C100-RT | |
| 6T48 | SBR | DR73934 | P&T 08-16/4x4C100-RT | |
| 6J51 | SBR | DR73941 | P&T 08-4x4/4S-RT | |
| Operator: Swietelsky Babcock Rail (Train service code:53694201) | ||||
| 6J98 | SBO | DR77001 | P&T AFM 2000-RT | |
| 6J99 | SBO | DR77002 | P&T AFM 2000-RT | |
| Operator: Harsco (Train service code:53693602) | ||||
| 6U21 | YN | DR80201 | PJ Plain Line Stoneblower | |
| 6U33 | YN | DR80213 | PJ Plain Line Stoneblower | |
| 6U35 | YN | DR80215 | HTT Plain Line Stoneblower | |
| Operator: Harsco (Train service code:53693601) | ||||
| 6U01 | YN | DR79261/79271 | HTT RGH20C | |
| Operator Balfour Beatty (Train service code:53693901) | ||||
| 6Z01 | YN | DR79231/2/3/4/5/6/7 | Loram C21 -01 | |
| 6Z02 | YN | DR79241/2/3/4/5/6/7 | Loram C21 -02 | Roger South (on car 79247) |
| 6Z03 | YN | DR79251/2/3/4/5/6/7 | Loram C21 -03 | |
| 7Z02 | YN | DR79201A/79201B | Loram SPML 17 | |
| Operator: DB Schenker (Train service code:53790404) | ||||
| 6Z06 | RT | DR989xx+989xx | Windhoff MPV | |
| Operator DB Schenker (Train service code:95998501) | ||||
| 3S90 | RT | DR989xx+989xx | Windhoff MPV | |
| 3S91 | RT | DR989xx+989xx | Windhoff MPV | |
| 3S93 | RT | DR989xx+989xx | Windhoff MPV | |
| 3S94 | RT | DR989xx+989xx | Windhoff MPV | |
Note that 6Z0x and 7Z0x headcodes may also be used by other STP freight trains.
Liveries
CO = Orange with black and yellow
SBR = White with orange cantrail and blue sole bar
SBO = White with blue band and thin orange stripes
FE = White with purple band and thin green stripes
YN = All yellow, 'Network Rail' branded
RT = Blue & lime green, 'Network Rail' branded
 DR73803 |  DR73932 | |||
 DR73933 |  DR73934 | |||
 Stoneblower DR80201 |  Stoneblower | |||
 DR79271/DR79261 S&C Rail grinder |  Rail Grinder DR79201 B+A |  Loram Rail Grinder C2101 | ||
 AFM DR77002 | ||||
 MPV DR98961/911 |  DR98002 & DR98001 - Windhoff OHL MPV at Mossend Yard | |||