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To offer knowledge about the global development of large-scale demand responsive transport systems (DRT), and to stimulate dialogue and collaboration for further innovation and improvement of these systems.

A review of the literature shows how DRT has evolved from the first applications in the 1970s to very complex operations in the last two decades with hundreds of vehicles and thousands of passengers every day. Data collection from available sources on the Internet and personal communications during international projects, conferences, and networking are used to quantify the development and status for large-scale DRT.

In the last decade, DRT is moving slowly ahead with real progress in some countries. The “Danish Model” is a good example of how to organize DRT for the best possible coordination of different mobility services, both “open” to the general market and for the special needs market. Such integration is also observed in a few places in the United States, and some European countries. For a real progress there is a great need and potential for international collaboration, as has been the case for most other sectors.

This is the first known attempt to collect information and compile a list of the 30 largest DRT systems in the world. This is used to analyze trends and provide insight into new directions for large-scale DRT systems. Suggestions for collaboration in various aspects of DRT should be valuable to organizations and policy makers with interest and power to further DRT innovations and operations.

To assess how advances in technology are changing the market prospects for paratransit, particularly DRT services.

To review recent developments in technology-enabled paratransit service through their impact on the supply curve for local transportation.

Some technology-enabled paratransit services, notably one-way car sharing and shared ride services offered by transportation network companies (TNCs), have been successful in generating significant usage within the past 24 months in Europe as well as the United States. At the same time, the introduction of technological advances in a comprehensive technology platform used for general public DRT services in Denver has not resulted in a ridership response of a large magnitude. Similarly, technology-enabled micro-transit services have had difficulty attracting sustainable levels of ridership. This suggests only some packages of technological innovations are able to shift the transportation supply curve. The key appears to be the development of a comprehensive technology platform which makes the new service simple and convenient to engage, use, and pay for; it is also highly advantageous if the service is less costly to the end user than existing alternatives.

Technology-enabled improvements of paratransit/DRT services are feasible and increasingly available, but the evidence shows that only when the use of technology significantly shifts the supply curve for local transportation that major impacts occur.

To provide concrete evidence as to the circumstances in which technology can make a significant impact on paratransit’s market prospects, but also identifies some of the limits to technology being able to create such impacts.

Technological and cultural changes of the past decade have revealed new ways to use the object of the car as demand responsive yet not private. Cars are increasingly able to fulfil the aims of demand responsive transport (DRT), by providing equitable access to flexible, yet sustainable, transport. This chapter outlines the conceptual and empirical case for this increasingly dynamic form of DRT and labels it ‘cars on demand’.

A review of literature and practice is used to detail characteristics of cars on demand, and the reasons for its emergence. Key features are illustrated using examples from around the world.

Cars on demand is a rapidly changing field. New economic models of provision are emerging, yet not all are designed to fulfil the aims of DRT by making transport more sustainable or equitable. These models do, however, contribute to making cars on demand work by encouraging transition from a culture of private-car ownership, to one where the car is an object ‘just’ for use. Cars on demand can therefore contribute to the fracturing of the powerful system of private-car use. Its relationship with decreased vehicle kilometres travelled (VKT) and transport disadvantage is, however, complex and vulnerable to erosion. This vulnerability can be mitigated by regulation and better understanding through research.

This chapter provides a novel conceptualisation of the way the object of the car is used in a demand responsive way. It contributes to understandings of regulatory issues surrounding shared mobility, and provides directions for future research.

Public agencies contract out to pursue a variety of goals. But, these goals cannot be realized if the performance of contractors is not assessed and monitored. This study examines the state of performance measurement and contract monitoring in the U.S. transit agencies. We focus on three research questions: (1) What monitoring capacity exists within transit agencies? (2) What monitoring methods are used by transit agencies? (3) What performance measures are tracked by transit agencies? We find monitoring units are common in a third of agencies in the study. Service and customer complaints are the most common performance measures, while penalties and liquidated damages are the most frequent form of penalties. Finally, we find that transit agencies utilize a variety of output and outcome measures to monitor contractors.

This chapter identifies the reasons why widespread and large-scale development of DRT has not emerged in the past 10 years even though previous research and analysis had suggested that conditions existed to facilitate such development.

Drawing on personal experience of operating DRT networks, supplemented by an analysis of the operating environment, operational barriers to implementation are identified.

Research results into the identified inhibiting factors are presented and supplemented by personal experience and interviews with key individuals. A successful integrated approach that has allowed a large DRT network to develop is described.

Recent changes in financial and structural conditions affecting the suitability of DRT in the United Kingdom as a solution to unmet travel needs and as a cost-effective alternative to conventional passenger transport are described. It is suggested that these factors have the potential to overcome barriers to further development. However, remaining obstacles in the field of Telematics are identified which may need further attention.

Introduction of large-scale DRT networks will not only be more cost effective but also offset financially driven service reductions and allow unmet travel needs to be met.

The identification of financial, technical, legal and social obstacles to the widespread implementation of DRT allows barriers to be addressed and removed and the full benefits of DRT to be realised. At a time of financial constraint, this allows more economic and integrated passenger transport solutions to be introduced to benefit both end users and service commissioners.

COVID-19 arrived in the United States and Canada at a time when the future of sustainable urban travel across the continent looked uncertain. A decade-long trend in transit ridership growth appeared to have stalled in many cities (Boisjoly et al., 2018), while automobile ownership grew. This chapter synthesises unfolding evidence on how COVID-19 disrupted some of these existing trends in North American urban transportation while accelerating others. This synthesis is organised around three themes emerging from COVID-19 in the region: declining transit ridership, increased auto ownership or auto purchase plans, and a possible ‘new normal’ of increased telecommuting. The author evaluates each theme in the context of prior trends and public policy choices feeding those trends. Untangling hype from data, the chapter concludes with recommendations on how to support travellers in the region while calling for clearer thinking from urban thought leaders and researchers on the likely long-term impact of the crisis.

We introduce and analyze an innovative transportation system called flexible mobility on demand (FMOD). FMOD provides a menu of optimized travel options in real-time. Practical considerations related to the business model for FMOD are taken into account as a pre-study for the pilot that will be conducted in Japan.

A modeling framework of FMOD is developed that integrates scheduling, routing, assortment optimization, and choice modeling methodologies. An assortment optimization model is developed with an objective function to maximize operator profit and consumer surplus.

The FMOD system is analyzed through simulation experiments in a Japanese case study. Simulations are presented for Hino city in Tokyo with different numbers of vehicles in the fleet. This analysis provides insights about the fleet size necessary to maintain reasonable levels of operator profit and consumer surplus.

We consider a business model for FMOD that offers flexibility to the operator in terms of who provides resources. The resources are managed with dedicated and non-dedicated services. The experiment indicates that operators can determine the size of the dedicated fleet based on an objective function that maximizes operator profit and passenger satisfaction.

The purpose of this paper is to propose a stochastic optimisation model for integrating service and maintenance policies in order to solve the queuing problem and the cost of maintenance activities for public transport services, with a particular focus on urban ropeway system.

The authors adopt the following approaches: a discrete-event model that uses a set of interrelated queues for the formulation of the service problem using a cost-based expression; and a maintenance model consisting of preventive and corrective maintenance actions, which considers two different maintenance policies (periodic block-type and age-based).

The work shows that neither periodic block-type maintenance nor an age-based maintenance is necessarily the best maintenance strategy over a long system lifecycle; the optimal strategy must consider both policies.

The maintenance policies are then evaluated for their impact on the service and operation of the transport system. The authors conclude by applying the proposed optimisation model using an example concerning ropeway systems.

This is the first study to simultaneously consider maintenance policy and operational policy in an urban aerial ropeway system, taking up the problem of queuing with particular attention to the unique requirements public transport services.