路線可靠，是指天天都表現良好，而不只是平均表現良好。

每個已擷取的日子都會得到一個分數，即該日觀察到的準點比例。如果當天至少 85% 的停靠站準點，該日即達標。

四種判定

結論	規則
可靠	Most days meet the target, and no long run of bad days.
不穩定	好日子和壞日子混在一起。乘客無法據此安排行程。
差	Few days meet the target.
長期	Poor for several months in a row, or below the target for a long run of days.
天數不足	Too few scored days. A verdict needs evidence.

Days with too few judged stops, and days we did not capture, are not scored. They do not count as good or bad, and they do not break a run.

已發布的月份資料不會更改。如果方法有修訂,過去的月份仍沿用當時計算所用的方法。