We designed and implemented a simple and fast heuristic for placing multiple labels along edges of a planar network. As a testbed, realworld data from Google Transit is taken: our implementation outputs an overlay onto Google Maps, adding route numbers to public transit lines.

We study the problem of computing best connections in public transit networks. A common approach models the network as a graph (Pyrga et al. 2008) on which it runs a shortest path algorithm (Dijkstra 1959). To enable interactive queries, a variety of speedup techniques exist that use a preprocessing stage to accelerate queries (Delling et al. 2009; Bast et al. 2010). Unfortunately, developed wi...

We study the problem of answering profile queries in public transportation networks that allow unrestricted walking. That is, finding all Pareto-optimal journeys regarding travel time and number of transfers in a given time interval. We introduce a novel algorithm that, unlike most state-of-the-art algorithms, can compute profiles efficiently in a setting that allows arbitrary walking. Using ou...

Ever since public transit agencies have found their way to the Web, they inform travelers using route planning software made available on their website. These travelers also need to be informed about other modes of transport, for which they have to consult other websites, or for which they have to ask the transit agency’s server maintainer to implement new functionalities. In this demo, we intr...

Public transit systems are ideal for studying the urban microbiome and interindividual community transfer. In this study, we used 16S amplicon and shotgun metagenomic sequencing to profile microbial communities on multiple transit surfaces across train lines and stations in the Boston metropolitan transit system. The greatest determinant of microbial community structure was the transit surface ...

Inefficiency of urban rail transit systems (URTS) results in a lower standard of service than required and has negative economic impacts. Many efforts have been undertaken to calculate the efficiency of URTS or their subunits. Overall equipment efficiency (OEE) as a measure of efficiency is a simple, flexible, and efficient formula. The OEE measure ensures that equipment is available and fully ...

The smart card system has been applied for all subway and bus in Seoul metropolitan area since 2004. In Seoul area public transport more than 90% of passengers use smart cards to pay fare. The boarding and alighting information from the smart cards enable to calculate the OD (origindestination) and total travel distance of each transit passenger. The smart card system of Seoul is operated as on...

For public transit operators in the U.S., neither fare increases nor fare reductions have been successful in boosting revenues. A different kind of strategy is needed, one that can produce more revenue for transit operators than it costs. This article argues that deep discount group pass (DDGP) programs can accomplish this goal. DDGP programs provide groups of people with unlimited-ride transit...

Spatial accessibility is a critical consideration in the provision of services, both public and private. In public transit planning, accessibility is comprised of access and geographic coverage. Interestingly, these two considerations are somewhat at odds with each other. Access is important because it is the process associated with getting to and departing from the service. Such access is typi...