During the TIAA MRT system testing period, there were issues such as ATO failure and unknown authorization of auto-train control and ATC-DDU that caused emergency brake of the train which affected the testing operations. After discussion of related units, the cause was determined to be the abnormal locations of absolute position reference (APR) points, APR006, APR010, APR014 and APR018, of the first to fourth platform station exits of A1 Station. Since the APRs were very close to the platform, the train might fail to read the APR when it stoped at the platform. In addition, the train should read the APR once again when departing the platform which might result in location error via logical interpretation of ATO causing cancellation of the train. Thus, the train couldn't automatically operation and would cause delays in train schedule.
After discussion by various units and onsite inspection, the four APRs were confirmed and decided to be shifted on Oct. 12, 2016. Following was the testing of express train and commuter train repeatedly operating back and forth between Taipei Main Station (A1) and Sanchong Station (A2). Through the operation tests, there were no emergency brake incidents and the green line in OCC representing train status stayed green throughout the test showing the trains smoothly ATO in and out of station. The dynamic testing results were very successful. In addition on Oct. 13, 2016, the entire system was installed with the new edition of geospatial ATC software ( Ver.149).
Calculating the test results of before and after improvement construction, the trains passing through Taipei Main Station (A1) have not encountered emergency brake and ATO failure after improvement measures.