Table 4

Comparisons of measurement equipment

NoNameDeveloperData collectionMeasured parametersApplicationNote
Trolleys
1GEDO CEGermanDirected track geometry measured dataLongitudinal level; Alignment; Gauge; Cant; TwistTSTJV Taiwan Shinkansen Trackwork Joint Venture, Danish Rail, Network Rail (UK), SNCF (France) etcTrack recording vehicles (Hand push)
2GRP1000SwitzerlandDirected track geometry measured data + GPSGauge; CantDemanding projects have been successfully realized in, e.g. Germany, Austria, Belgium, Denmark, France, Italy, UK, Korea, USA, PR China etcTrack recording vehicles (Hand push)
Track recording vehicles
3Roger 1,000NorwegianLaster + GPSLongitudinal level; Alignment; Gauge; Cant; TwistItaly, Switzerland, Germany and NorwayTrack recording vehicles (160km/h)
4New Measurement TrainUnited KingdomLasers, vertical and horizontal actuators, gyros, accelerometers, video/image systemGauge; Alignment; Twist; Cant; WearIt is allocated to Heaton TMD in Newcastle-upon-Tyne, returning there for scheduled maintenance every weekTrack recording vehicles (200km/h)
In-service railway vehicles
5UGMSUnited KingdomDirected track geometry measured data + GPSLongitudinal level; Alignment; Gauge; Cant; TwistNew intercity express programme (IEP) vehiclesCondition monitoring from in-service railway vehicles
6Acela trainUSACar body vertical acceleration, lateral acceleration, bogie lateral acceleration + GPSAmerican high-speed trains (Acela train)Condition monitoring from in-service railway vehicles (240km/h)
7DeltaRail Track line systemEuropeVertical acceleration on the bogie above the axle box, vertically sensing displacement transducer to the axle boxVertical rail profilesCTRL between London and Paris/BrusselsCondition monitoring from in-service railway vehicles (300km/h)
8Deutsche Bahn ICE 2 trainGermanyAccelerometersS-Bahn Hamburg, S-Bahn BerlinCondition monitoring from in-service railway vehicles
9Japanese railwayJapaneseVertical and lateral acceleration of the car body, rate gyroscope, cabin noise + GPSRail irregularitiesJapanese conventional railwayCondition monitoring from in-service railway vehicles
10RAIDARSSJapaneseaxle-box-mounted, vertically sensing accelerometers + GPSRail irregularitiesJapanese high speed trainCondition monitoring from in-service railway vehicles
11Iris 320FranceAccelerometers + GPSEurotunnel, High Speed 1, high-speed line in Belgium for InfrabelCondition monitoring from in-service railway vehicles (200km/h)
12China Railway comprehensive inspection trainsChinaAccelerometers on axle box, frame and car body, wheel-rail force + GPSChinese “He Xian” trainsCondition monitoring from in-service railway vehicles (350km/h)
Smartphones
13SmartphonesGPS, accelerometer, vibrations Budapest Rack Rail (BRR), trains in Montreal, Santo Domingo and LondonMainly taking passenger comfort or discomfort as a criteria
Drone
14DroneImageGaugeCondition monitoring by drone
Source(s): Authors’ own work

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