
Last update 21 March 2021
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Sometimes, a train's axle bearings overheat. This can cause serious damage; in an extreme case a wheel can seize and cause a derailment. At strategic points on the network, hot axle box detectors (HABDs), also known as hot axle bearing detectors, are placed to detect overheating. HABDs are usually placed a few miles before suitable sidings/loops such that if a fault is detected the signaller can route the train out of the way whilst inspection and repair can take place. Detectors usually take the form of four yellow boxes, one either side of each rail.
Other easily-detectable faults are flat points on wheels. As the wheel turns so the flat spot causes a 'hammer blow' to the track and this is detectable by wheel impact load detectors (WILDs), also known as 'Gotcha', 'Wheelchex' (after their proprietary names) or vehicle health monitoring equipment (VHME). The equipment minimises the possibility of track damage. Again these are placed shortly before a suitable place to take the train out of service as required.
These lists show HABDs and WILDs as at 2015 and subsequent developments, with additional research for earlier activity, sorted by ELR and mileage. Names are official where known or a suitable identifying place where they aren't. Items not in current use are shown with a strikethrough, thus.
ELR | HABD Name | Mileage | Tracks | Notes |
---|
BAG2 | Spetchley | 65m 17ch | down main | |
BAG2 | Eckington | 74m 51ch | installed 29 September 1997, later moved to 74m 46ch | |
BAG2 | Eckington | 74m 46ch | up main | previously at 74m 51ch |
BAG2 | Ashchurch | 79m 40ch | removed 29 September 1997 | |
BAG2 | Churchdown | 89m 0ch | present in 1969, later moved to 89m 0ch | |
BAG2 | Churchdown | 89m 6ch | down main | previously at 89m 0ch |
BGK | Newport | 39m 48ch | up main | |
BGK | Shepreth | 53m 10ch | down main | |
BGL2 | Brookthorpe | 97m 50ch | present in 1969, later moved to 97m 58ch | |
BGL2 | Brookthorpe | 97m 58ch | up Charfield | previously at 97m 50ch in 1969 |
BHL | Colthrop | 48m 44ch | later moved to 48m 66ch later moved to 48m 66ch | |
BHL | Colthrop | 48m 66ch | down Westbury up Westbury | previously at 48m 44ch previously at 48m 44ch |
BHL | Kintbury | 58m 0ch | moved to 58m 32ch 1 September 2018 | |
BHL | Kintbury | 58m 32ch | up Westbury | previously at 58m 0ch to 1 September 2018 |
BHL | Pewsey | 75m 26ch | later moved to 75m 60ch | |
BHL | Pewsey | 75m 60ch | down Westbury | previously at 75m 26ch |
BRY | Dinas Powys | 5m 22ch | later moved to 4m 31ch from 30 June 2014 | |
BRY | Dinas Powys | 4m 31ch | down Barry | previously at 5m 22ch to 30 June 2014 |
BRY | Dinas Powys | 5m 22ch | up Barry | installed 30 June 2014 |
BSW | Filton Junction | 4m 75ch | up Bristol | |
BSW | Pilning | 9m 8ch | up tunnel | |
CBC3 | Low Mill | 24m 33ch | down main | originally shown as 24m 27ch; moved or erroneous original? |
CCL | Keinton Mandeville | 120m 6ch | up | |
CGJ1 | Winsford | 166m 38ch | up main | |
CGJ2 | Norton | 176m 39ch | down main | |
CGJ5 | Coppull Hall | 10m 60ch | down main up main | |
CGJ7 | Hest Bank | 2m 51ch | down main | |
CGJ7 | Bolton-le-Sands | 5m 8ch | up main | |
CGJ7 | Low Gill | 27m 6ch | down main | from 15 April 1973 |
CGJ7 | Harrison's Siding | 41m 73ch | up main | from 18 March 1973 |
CGJ7 | Southwaite | 62m 6ch | down main | from 18 February 1973 |
CHR | Barrow Hill | 146m 69ch | down Barrow Hill | |
CHR | Renishaw | 152m 47ch | up main | |
CMD1 | Harecastle | 10m 58ch | later moved to 14m 9ch | |
CMD1 | Harecastle | 14m 9ch | up main | previously at 10m 58ch |
CMD2 | Barlaston | 24m 47ch | later moved to 24m 39ch | |
CMD2 | Barlaston | 24m 39ch | down main | previously at 24m 47ch |
CMP1 | Holmes Chapel | 166m 51ch | down Wilmslow | |
CMP1 | Wilmslow | 176m 34ch | up Wilmslow | |
DAC | Newton St Cyres | 176m 60ch | Single | |
DBP1 | Branston | 13m 44ch | up Tamworth | |
DBP1 | Willington | 6m 1ch | down Tamworth | |
DBP1 | Tamworth | 22m 30ch | down main | possibly previously at 22m 40ch |
DBP3 | Whitacre | 31m 69ch | down slow | never installed? |
DCL | Radley | 58m 58ch | present in 1969, later moved to 60m 0ch | |
DCL | Radley | 60m 0ch | up main | previously at 58m 58ch in 1969 |
DCL | Cropredy | 89m 79ch | down main | |
DOL1 | Castle Mills | 158m 60ch | up | |
DOW | Thorne South | 9m 41ch | later moved to 10m 12ch | |
DOW | Thorne South | 10m 12ch | down main | previously at 9m 41ch |
DOW | Keadby | 17m 6ch | up main | |
ECA2 | Auchengray | 79m 35ch | up | |
ECM1 | Langley | 26m 62ch | down fast down slow | |
ECM1 | Wymondley | 29m 70ch | later moved to 30m 60ch later moved to 30m 60ch | |
ECM1 | Wymondley | 30m 60ch | up fast up slow | previously at 29m 70ch previously at 29m 70ch |
ECM1 | Biggleswade | 42m 10ch | up fast up slow | |
ECM1 | Offord | 54m 7ch | down fast up fast | |
ECM1 | Abbots Ripton | 64m 25ch | moved to 64m 61ch by 2018 | |
ECM1 | Abbots Ripton | 64m 61ch | up fast | previously at 64m 25ch |
ECM1 | Holme | 69m 28ch | down fast | |
ECM1 | Lolham | 83m 33ch | up fast up slow | |
ECM1 | Stoke | 99m 78ch | down fast | |
ECM1 | Barkston | 109m 56ch | up main | |
ECM1 | Balderton | 116m 70ch | down main | |
ECM1 | Cromwell | 124m 55ch | up main | |
ECM1 | Gamston (Askam) | 134m 37ch | down main | |
ECM1 | Torworth | 143m 17ch | up main | |
ECM1 | Bawtry | 148m 55ch | down main | |
ECM1 | Daw Lane | 159m 10ch | up main | |
ECM4 | Earfit Lane (Colton North) | 184m 4ch | down Leeds down main | |
ECM5 | Sessay | 16m 65ch | down fast down slow up fast up slow | |
ECM5 | Danby Wiske | 33m 50ch | up main | |
ECM5 | Eryholme (East Cowton) | 38m 72ch | down main | |
ECM5 | Aycliffe | 49m 36ch | down main | |
ECM5 | Littleburn (Durham) | 63m 59ch | up fast | |
ECM5 | Plawsworth (Chester-le-Street) | 70m 20ch | down main | |
ECM7 | Dam Dykes | 8m 45ch | down main removed 11 September 2017 | |
ECM7 | Longhirst | 20m 20ch | down main | from 11 September 2017 |
ECM7 | Chevington | 25m 48ch | up main | |
ECM7 | Stamford | 40m 38ch | removed 14 September 2017 | |
ECM7 | Stamford | 40m 38ch | up main | from 14 September 2017 |
ECM7 | Newham | 47m 8ch | up main | removed 14 September 2017; replaced 8 February 2018 |
ECM7 | Goswick | 60m 66ch | down main | |
ECM8 | Stenton | 25m 48ch | later moved to 24m 20ch | |
ECM8 | Stenton | 24m 20ch | up | previously at 25m 48ch |
ECM8 | Oxwellmains | 32m 65ch | down | |
ECM8 | Lamberton | 54m 6ch | up main | |
ECN2 | Aberdour | 16m 31ch | up Fife circle | |
EMP | Second Drove | 75m 58ch | up Peterborough | |
EMP | Kings Dyke | 96m 71ch | down March | from 14 November 2010 |
GSM1 | Geddington (Corby) | 77m 8ch | up and down Corby | |
HNL1 | Tram Inn | 5m 37ch | up main | |
HNL1 | Nantyderry | 28m 75ch | down main up main | |
HNR | Roade | 59m 72ch | down Northampton | |
HNR | Althorpe Park | 72m 4ch | up Northampton | |
HUL1 | Melton Lane | 8m 39ch | down Hull | from 26 November 2018 |
HUL1 | Hemingborough (Cliffe) | 28m 0ch | up Hull | |
HUL3 | Harrymore Lane | 2m 78ch | down Hull | |
HUL4 | Barrowby Lane (Garforth) | 13m 74ch | up Hull | |
KMG2 | Floriston | 7m 45ch | up arrival | |
KWS | Post Office Lane | 62m 16ch | down Doncaster | |
LEC1 | Northchurch | 30m 7ch | up fast up slow | |
LEC1 | Soulbury Road | 42m 10ch | removed by September 2017 | |
LEC1 | Soulbury Road | 42m 74ch | removed by September 2017 | |
LEC1 | Soulbury Road | 42m 68ch | down fast down slow | from 7 October 2017 |
LEC1 | Wolverton | c50m 43ch | up slow up fast | installed by 1969 |
LEC1 | Castlethorpe North | 55m 63ch | up slow up fast | |
LEC1 | Kilsby North | 78m 66ch | later moved to 79m 1ch | |
LEC1 | Kilsby North | 79m 1ch | down main | previously at 78m 66ch |
LEC2 | Shilton | 91m 26ch | up Trent Valley fast up Trent Valley slow | |
LEC2 | Shilton | 91m 30ch | down Trent Valley | |
LEC2 | Armitage | 121m 20ch | up Trent Valley fast up Trent Valley slow | |
LEC2 | Milford and Brocton | 129m 29ch | down main | |
LEC4 | Shallowford | 138m 30ch | up fast up slow | shown at 138m 62ch by May 2019 |
LEC4 | Madeley | 149m 74ch | down fast down slow | |
LEN3 | Long Lane (Low Gates) | 46m 32ch | later moved to 45m 65ch | |
LEN3 | Long Lane (Low Gates) | 45m 65ch | previously at 46m 32ch, moved to 46m 32ch by 14 October 2017 | |
LEN3 | Long Lane (Low Gates) | 46m 32ch | up | previously at 45m 65ch, returned to this position by 14 October 2017 |
LEN3 | Stockton | 61m 2ch | down Sunderland up Sunderland | from 2021 delayed from 10 February 2021 from 2021 delayed from 10 February 2021 |
LEN3 | Easington | 80m 15ch | down Sunderland up Sunderland | from 15 November 2010 from 15 November 2010 |
LTN1 | Brentwood | 17m 1ch | down electric down main | previously at 17m 33ch previously at 17m 33ch |
LTN1 | Brentwood | 17m 33ch | down electric down main | moved to 17m 1ch by 2011; higher mileage reported in error? moved to 17m 1ch by 2011; higher mileage reported in error? |
LTN1 | Margaretting | 25m 41ch | moved to 25m 78ch after 2011 | |
LTN1 | Margaretting | 25m 78ch | up main | previously at 25m 41ch |
MAC3 | Manton Wood | 60m 41ch | moved to 60m 60ch by 2014 | |
MAC3 | Manton Wood | 60m 60ch | up main | previously at 60m 41ch |
MLN1 | Maidenhead | 24m 3ch | up relief | from 8 September 2016, brought into use 10 April 2017 |
MLN1 | Maidenhead | 24m 10ch | moved to 24m 3ch from 8 September 2016, also present in 1969 | |
MLN1 | Maidenhead | 24m 10ch | up main | also present in 1969 |
MLN1 | Twyford | 32m 2ch | down main down relief | also present in 1969 also present in 1969 |
MLN1 | Basildon | 43m 15ch | present in 1969, later moved to 43m 42ch present in 1969, later moved to 43m 42ch | |
MLN1 | Basildon | 43m 42ch | up main up relief | previously at 43m 15ch previously at 43m 15ch |
MLN1 | Basildon | 43m 42ch | down relief down main | previously at 48m 48ch; disconnected 10 December 2016 previously at 48m 48ch |
MLN1 | Basildon | 48m 48ch | present in 1969, later moved to 43m 42ch present in 1969, later moved to 43m 42ch | |
MLN1 | Wantage Road | 59m 57ch | up main | previously at 61m 12ch in 1969 |
MLN1 | Wantage Road | 61m 12ch | present in 1969, later moved to 59m 57ch | |
MLN1 | Bourton | 72m 20ch | down main | previously at 72m 65ch in 1969 |
MLN1 | Bourton | 72m 65ch | present in 1969, later moved to 72m 20ch | |
MLN1 | Studley (Wootton Bassett) | 81m 14ch | present in 1969, later moved to 81m 40ch | |
MLN1 | Studley (Wootton Bassett) | 81m 33ch | up main | previously at 81m 40ch to 29 June 2019 |
MLN1 | Studley (Wootton Bassett) | 81m 40ch | previously at 81m 14ch in 1969, moved to 81m 33ch from 29 June 2019 | |
MLN1 | Twerton | 108m 19ch | down main | previously at 108m 60ch |
MLN1 | Twerton | 108m 60ch | moved to 108m 19ch by April 2018 | |
MLN1 | Nailsea | 127m 41ch | up main | |
MLN1 | Yatton | 131m 20ch | down main | |
MLN1 | Cogload | 158m 43ch | present in 1969, later moved to 158m 70ch | |
MLN1 | Cogload | 158m 70ch | down main | previously at 158m 43ch in 1969 |
MLN1 | Nynehead | 168m 59ch | up main | |
MLN1 | Stoke Canon | 188m 56ch | down main | |
MLN1 | Exminster | 198m 70ch | up main | |
MLN1 | Dainton tunnel | 217m 57ch | down main later moved to 217m 76ch | |
MLN1 | Dainton tunnel | 217m 76ch | down main | previously at 217m 57ch |
MLN2 | Keyham | 248m 77ch | up main | |
MLN3 | Treverrin | 279m 59ch | down main up main | |
MVL3 | Heaton Lodge | 29m 47ch | up Huddersfield | into use 20 January 2018 |
MVN2 | Mytholmroyd | 25m 0ch 25m 71ch | down L&Y up L&Y | into use 23 October 2018 into use 23 October 2018 |
NBS | Searchlight Lane | 3m 72ch | up Norton Bridge | on 2016 NBS line diversion |
NEC2 | Wetherall | 56m 73ch | down Newcastle | |
NOB1 | Netherfield | 2m 26ch | up Newark | |
NOB1 | Langford | 20m 24ch | up Lincoln | |
NOC | Church Fenton | 11m 8ch | up Normanton | |
NOG1 | Allington | 108m 64ch | up Nottingham | |
NWO | Arley | 5m 60ch | down Arley | |
PED5 | Warmsworth (Conisbrough) | 19m 28ch | up Sheffield | |
PMJ | Bainton Green | 15m 33ch | up Stamford | |
RBS1 | Brandon | 89m 5ch | down Coventry | |
RBS1 | Bradnocks Marsh | 101m 14ch | up main | |
RBS3 | Penkridge | 24m 1ch | down main | |
RBS3 | Penkridge | 25m 20ch | up main | |
SAL | Warminster | 113m 73ch | up Salisbury | |
SHL | Marsh Farm | 14m 33ch | down main | |
SHL | Ludlow | 26m 64ch | up main | |
SHL | Wellington | 45m 32ch | down main | |
SKN | Lifford East | 46m 0ch | up Camp Hill | |
SKW1 | Gargrave | 226m 59ch | up main | |
SMJ2 | Hickleton | 15m 12ch | down Pontefract | |
SMJ2 | Baghill | 6m 70ch | up Pontefract | |
SPC1 | Napsbury | 18m 0ch | up fast up slow | |
SPC1 | Chiltern Green | 27m 57ch | down slow | previously at 27m 69ch |
SPC1 | Chiltern Green | 27m 69ch | down slow moved to 27m 57ch by August 2020 | |
SPC2 | Oakley | 53m 60ch | up fast up slow | |
SPC3 | Harrowden Junction (Finedon) | 67m 36ch | down fast up and down slow | |
SPC3 | East Langton | 86m 20ch | down main up main | |
SPC5 | Barrow-upon-Soar | 108m 72ch | down fast down slow | |
SPC5 | Loughborough | 111m 5ch | up fast up slow | |
SPC8 | Duffield | 132m 63ch | replaced by Belper 8 October 2018 | |
SPC8 | Belper | 134m 68ch | up main | replaced Duffield from 8 October 2018 |
SPD1 | Cheal Road | 48m 32ch | down Spalding | |
SPD2 | Scopwick | 70m 43ch | up Spalding | |
SPD2 | Blankney | 73m 21ch | down Spalding | |
SPD3 | Sykes Lane | 89m 17ch | replaced by Tinsley's from 3 November 2014 | |
SPD3 | Tinsley's | 88m 58ch | up Spalding | replaced Sykes Lane 3 November 2014 (though still shown there in 2019) |
SPD3 | Gainsborough | 98m 56ch | down main | |
SPD4 | Haxey | 105m 59ch | up | |
SPD4 | Auckley | 112m 73ch | down main | |
SWB | Chipping Sodbury | 105m 63ch | down Badminton up Badminton | present in 1971 present in 1971 |
SWB | Coalpit Heath | 109m 27ch | down Badminton up Badminton | |
SWM2 | Over? | 117m 20ch | up | present in 1969 |
SWM2 | Bullo Pill | 125m 59ch | up main | |
SWM2 | Caldicot (Portskewett) | 145m 50ch | down main | |
SWM2 | Bishton | 155m 7ch | up main up relief | |
SWM2 | Marshfield | 163m 73ch | down main down relief | |
SWM2 | Pontsarn | 175m 79ch | later moved to at 178m 39ch | |
SWM2 | Pontsarn | 178m 39ch | up main | previously at 175m 79ch |
SWM2 | Pontsarn | 178m 39ch | down main | |
SWM2 | Bryn-Y-Gwynon | 185m 10ch | up main | never installed? |
SWM2 | Stormy | 194m 72ch | down main | installed 21 January 2019 delayed from 2 December 2018 |
SWM2 | Port Talbot West | 203m 1ch | removed 18 November 2018 | |
SWM2 | Briton Ferry | 205m 36ch | up main | |
SWM2 | Pembrey | 228m 59ch | up main | |
SWY | Urchfont | 84m 28ch | up Westbury | installed ≈29 August 2020 |
TCC | Langley Mill | 129m 27ch | up and down Erewash slow up Erewash fast | |
TCC | Stoneyford | 131m 19ch | down main up slow | never installed? never installed? |
TJC1 | Tapton | 146m 69ch | down goods | no longer used? |
TJC1 | Dore | 154m 72ch | down Sheffield | |
TJC3 | Methley North | 188m 34ch | down Midland | |
TJC3 | Calverley (Kirkstall Forge) | 201m 40ch | up Leeds | |
TJC3 | Kildwick | 216m 50ch | down Shipley main | |
TJG2 | Thorne North | 12m 32ch | up main | |
TRL3 | Wennington | 29.723km | down line | |
TRL3 | Wennington | 29.839km | up line | |
WCM1 | Floriston | 6m 5ch | up main | |
WCM1 | Nethercleugh | 28m 51ch | up | |
WCM1 | Wamphray | 34m 42ch | down | |
WCM1 | Crawford | 55m 76ch | up | |
WCM1 | Leggatfoot | 70m 20ch | down | |
WCM1 | Braidwood | 80m 57ch | up | |
WEB | Tinsley's | 88m 58ch | up Spalding | |
WEY | Upton Noble (Bruton) | 125m 69ch | down main | |
WJL1 | Sutton Weaver | 177m 35ch | down main | |
WNS | Narborough | 12m 17ch | up Nuneaton | |
XTD | Sevington | 58m 42ch | down main up main |
ELR | WILD Name | Mileage | Tracks | Notes |
---|
AYR3 | Howwood | 12m 77ch | down Ayr up Ayr | |
BAG2 | Eckington | 75m 46ch | down main up main | |
BML1 | Queenstown Road (Battersea) | 2m 44ch | up main fast up main slow | |
BML1 | Shawford | 68m 56ch | up down | |
CGJ3 | Dallam | 183m 40ch | moved to 183m 68ch from 8 September 2018 moved to 183m 68ch from 8 September 2018 moved to 183m 68ch from 8 September 2018 moved to 183m 68ch from 8 September 2018 | |
CGJ3 | Dallam | 183m 68ch | down fast down slow up fast up slow | from 8 September 2018 from 8 September 2018 from 8 September 2018 from 8 September 2018 |
CMP1 | Heaton Chapel | 184m 27ch | down fast down slow up fast up slow | |
ECM1 | Wymondley | 30m 63ch | up fast up slow | from 8 September 2018 from 8 September 2018 |
ECM5 | Sessay | 16m 65ch | down fast down slow up fast up slow | from 8 September 2018 from 8 September 2018 from 8 September 2018 from 8 September 2018 |
ECM8 | Innerwick | 33m 62ch | down Berwick up Berwick | |
EGM1 | Philpstoun | 32m 1ch | down E & G up E & G | |
EMP | Eastrea | 93m 53ch | moved to 93m 60ch from 29 July 2018 moved to 93m 60ch from 29 July 2018 | |
EMP | Eastrea | 93m 60ch | down up | from 29 July 2018 from 29 July 2018 |
GSW | New Cumnock | 56m 70ch | down main up main | |
HNL1 | Tram Inn | 2m 75ch | down main up main | from 23 April 2016 from 23 April 2016 |
HXS3 | Ainsdale | 14m 18ch | down Southport | |
HXS3 | Ainsdale | 14m 3ch | down Southport | reported from 7 April 2018; moved or earlier incorrect information? |
LEC1 | Cheddington | 34m 60ch | down fast down slow up fast up slow | |
LTN1 | Margaretting | 24m 75ch | moved to 24m 79ch from 29 July 2018 moved to 24m 79ch from 29 July 2018 | |
LTN1 | Ingatestone | 24m 79ch | down main up main | from 29 July 2018 from 29 July 2018 |
MAC3 | Croxton | 97m 54ch | down main | from 26 January 2019 |
MAC3 | Croxton | 97m 57ch | from 8 September 2018; removed 15 December 2018 from 8 September 2018; removed 15 December 2018 | |
MAS | Grindleford | 159m 45ch | moved to 159m 79ch from 1 September 2018 moved to 159m 79ch from 1 September 2018 | |
MAS | Grindleford | 159m 79ch | down main up main | from 1 September 2018 from 1 September 2018 |
MLN1 | Waltham | 26m 21ch | down main down relief up main up relief | |
MLN1 | Cholsey | 49m 05ch | down main down relief up main up relief | |
MLN1 | Exminster | 198m 68ch | down main up main | |
SHL | Bromfield | 25m 0ch | removed 23 April 2016 removed 23 April 2016 | |
SPC5 | Thurmaston | 101m 78ch | down fast up & down slow up fast | |
SWB | Alderton | 98m 30ch | down Badminton up Badminton | |
SWM2 | Marshfield | 163m 63ch | down main down relief up main up relief | |
SWY | Urchfont | 84m 28ch | possibly moved from 84m 40ch; moved to 84m 32ch from 7 March 2020 | |
SWY | Urchfont | 84m 32ch | down up | previously at 83m 28ch; from 7 March 2020 |
SWY | Urchfont | 84m 40ch | unclear if actually installed; later at 84m 28ch | |
TRL3 | Thurrock | 29.723km | down CTRL | |
TRL3 | Thurrock | 29.739km | up CTRL | |
TRL3 | Nashenden | 52.864km | down CTRL | |
TRL3 | Nashenden | 52.995km | up CTRL | |
TRL3 | Charing | 79.731km | up CTRL | |
TRL3 | Charing | 79.822km | down CTRL | |
TRL3 | Ashford | 92.771km | down CTRL up CTRL | |
VIR | Swanley | 16m 8ch | up fast up slow | |
VTB3 | Salfords | 23m 55ch | unknown | |
WCM1 | Braidwood | 80m 58ch | down main up main | |
XTD | Sevington | 58m 42ch | down main up main |