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Reliability of Stockholm Subway - Index of

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The results <strong>of</strong> 2009 fit the SL aim <strong>of</strong> 2010. It means that passengers are satisfied<br />

enough according to the SL expectation. Nonetheless, it is necessary to wait for the<br />

results <strong>of</strong> the spring 2010 to define if it is a regular tendency or just a variability <strong>of</strong> the<br />

data.<br />

Besides, SL uses an independent contractor to operate and maintain the subway<br />

system. According to the agreement between SL and the actual subway operator there<br />

are stipulated bonuses for the operator in case <strong>of</strong> a punctual train service. That is why<br />

the operator is interested in a reliable transit too. In November 2009 the Hong Kong<br />

MTR Corporation became the operator <strong>of</strong> <strong>Stockholm</strong> subway. It is a new player in the<br />

Swedish transportation market. They have definitely introduced new solutions in the<br />

subway operations which will certainly influence overall reliability <strong>of</strong> the system and<br />

the customers‟ satisfaction which are <strong>of</strong> interest to study.<br />

SL has a source <strong>of</strong> data which can be widely used to examine the performance <strong>of</strong> the<br />

<strong>Stockholm</strong> subway. Data is electronically collected and stored in the database RUST.<br />

The database contains information on travel delays, travel and dwelling time.<br />

Applying computer analysis it is possible to investigate the changes <strong>of</strong> subway service<br />

performance on any date or during any time period. At the moment the company does<br />

not use the data widely and relies more on manually collected data <strong>of</strong> ÅF Group, AB.<br />

Next year there are plans in the company to begin more active RUST data using. To<br />

be confident in data reliability they carry out comparing it with manually collected<br />

data to reach as good concordance as possible.<br />

15

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