Transafe Vehicle: Safety in Public Transport

Integrated Vehicle and Crew Scheduling in Public Transport

The talk deals with new models and OR techniques for an integrated approach to vehicle and crew scheduling. These techniques include explotation of network ow structures using Lagrangian relaxations and column generation, and, in particular, new algorithms for vehicle scheduling and the column generation pricing problem. Computational results obtained with real life problems will be presented a...

Validation of Automatic Vehicle Location Data in Public Transport Systems

Performance metrics for public transport systems can be calculated from automatic vehicle location (AVL) data but data collection subsystems can introduce errors into the data which would invalidate these calculations, giving rise to misleading conclusions. In this paper we present a range of methods for visualising and validating AVL data before performance metrics are computed. We illustrate ...

Increasing Delay-Tolerance of Vehicle Schedules in Public Bus Transport

In public bus transport resource schedules are computed offline, but unavoidable delays occur frequently during the transportation process. Thus, schedules become infeasible and the operations control has to undertake expensive actions on the day of operations. We present different heuristic offline approaches to increase delay-tolerance of vehicle schedules. Two of these approaches are based o...

Motor-vehicle safety: a 20th century public health achievement.

The reduction of the rate of death attributable to motor-vehicle crashes in the United States represents the successful public health response to a great technologic advance of the 20th century-the motorization of America. Six times as many people drive today as in 1925, and the number of motor vehicles in the country has increased 11-fold since then to approximately 215 million. The number of ...

Transport Infrastructures Safety: a Case Study about Public Policy-making Transport Infrastructures Safety: a Case Study about Public Policy-making