Axle Counter Reset Button
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Purpose
Axle counters are often used devices for detecting track occuption. One device counts the number of axles that drive into a track section. As soon as one axle has been counted, the track section is considered being occupied. A similar device at the end of the track section counts the axles that drive out of the section. If the difference in counted axles is not equal to zero, the track section will be considered occupied. Sometimes, and that could be for many reasons, this way of counting fails, and thus the track section will maintain its occupied status whilst in reality its free. In such situation, the Axle Counter Reset Button (AzGrT) can be applied to reset the axle counters of the track section, and thus clear the track from being occupied.
Operation
The AzGrT is pressed together with the track button or switch button. Tracks and switches, which are equipped with axle counters, have brown buttons with a white dot, instead of the usual black buttons. If the track on the open line (in a block) is equipped with axle counters, then the AzGrT and the Signal button at the start of the 'occupied' block section have to be pressed. For both scenarios, the track occupation will clear and main signals will be able to show Proceed again.
There is a counter next to this group button because operation of the AzGrT is subject to a written report why it was used.
Notes
Operating the AzGrT could lead to dangerous situations! If operated and the track is actually occupied, a serious accident is almost inevitable! The track must be proven to be free by visual inspection. For the track between to dispatching centers there is the method that the dispatcher of the receiving signal box confirms that the complete train has arrived at his end. If the last is not possible either, then the following train may only enter the track section by driving on sight. But still it is not allowed to operate the AzGrT in such situation!