Hod Carrier
Infrastructure 16
This is a Hot Axle Box Detector (HABD) together with it's associated small portable-type lineside equipment building. These detectors are dotted around the network and are used to detect an overheating axle box. These automatic installations sound an alarm at the signalbox and tell the signaller which axle and on which side of the train the defect is occurring so that the train can be stopped and examined.
The central detector between the rails is offset to be nearer one rail or the other to help the system determine which side of the train the defective axle is.
Infrastructure 16
This is a Hot Axle Box Detector (HABD) together with it's associated small portable-type lineside equipment building. These detectors are dotted around the network and are used to detect an overheating axle box. These automatic installations sound an alarm at the signalbox and tell the signaller which axle and on which side of the train the defect is occurring so that the train can be stopped and examined.
The central detector between the rails is offset to be nearer one rail or the other to help the system determine which side of the train the defective axle is.