CONTROLLING OPERATIONS OF PUBLIC TRANSPORT TO IMPROVE RELIABILITY: THEORY AND PRACTICE Niels van Oort HTM Urban Transport Company Department of Research and Development P.O. Box 28503 2502 KM The Hague, The Netherlands Telephone: +31.70.3848518 Fax: +31.70.3848476 E-mail:
[email protected] Rob van Nes Delft University of Technology Faculty of Civil Engineering and Geosciences Transport & Planning P.O. Box 5048 2600 GA Delft, The Netherlands Telephone: +31.15.2784033 Fax: +31.15.2783179 E-mail:
[email protected] February 2009 Word count: Abstract (250) + Text (4414) + Figures/Tables (9*250=2250) = 6914 N. van Oort, R. van Nes 2 Abstract RandstadRail is a new light rail system between the cities of The Hague, Rotterdam and Zoetermeer in The Netherlands. During peak hours, the frequency on some trajectories is about 24 vehicles an hour. Dealing with these high frequencies and offering travelers a high-quality product, in terms of waiting times and the probability of getting a seat, the operator designed a three-step controlling philosophy. The first step is to prevent deviations from occurring: the infrastructure is exclusively right of way as much as possible and at intersections RandstadRail gets priority over the other traffic. RandstadRail stops at every stop and never leaves before the scheduled time. The second step in the philosophy is dealing with deviations by planning additional time in the schedule at stops, trajectories and terminals. Small deviations can be solved in this way. The final step to get vehicles back on schedule is performed by the traffic control centre: they have a total overview of all vehicles and they can respond to disturbances like slowing down vehicles nearby a delayed vehicle.