![]() When a delay has occurred, we sometimes have to implement what are known as "service restoration techniques" to space trains out (i.e., running a train express or briefly holding trains at stations across the rail line). It can then also lead to a train taking longer to stop at each station, falling further behind schedule and the overall impact of a delay gets worse, even though there's no specific stoppage. If a delay occurs at the peak of a rush period-even for just a few minutes-it can cause trains to quickly back-up, resulting in an area of rolling congestion and/or gaps in service in front of the delayed train.ĭelays can quickly become compounded: For example, once something has delayed a train, more people will be waiting at stations ahead and the delayed train can become crowded, leaving people behind at each platform. We also have service management staff strategically placed around the system to be able to help train operators in the event of a problem they can't quickly solve themselves. Knowing that we must deal with the unexpected every day, our schedulers design a little wiggle room into the schedule-this allows for most run-of-the-mill delays, which can be compensated for by a train by simply continuing without further interruption. The cause of delays can range from equipment problems to people becoming ill during their commute. Rail networks are complicated systems and there are a lot of variables that can affect service. On the ‘L’ system Why do delays happen on the ‘L’ and what do you do about them?
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