Smart Travel and Sustainable Mobility

Combining the integration of Bike, Bus, Metro and Walk (BBMW) with transit-oriented development, demand management and integrated pricing schemes, this paper presents an eco-mobility equation which outlines how developing cities can improve their transportation network. Successful implementations and potential applications of information and communication technologies for demand management and multimodality are also proposed and discussed.

An Eco-Mobility Equation

In terms of urban development, the following characteristics differentiate developing cities from their developed counterparts: extremely high population density, dramatic motorization, mixed land-use pattern, mixed traffic flow pattern, informal public transport, inefficient enforcement and high fatality.

This paper identifies the seven most important factors in achieving greener and more sustainable mobility, and charts their relationship in the eco-mobility equation below:

EM=[(TD+AM+ TM +GT + IP)S]L                           

EM, or the effectiveness of implementing Eco-Mobility, may be manifested as the reduction of travel delays, emissions, and accident rates. This equation identifies a horizontal relationship between five key eco-mobility strategies, while recognising the exponential potential of both stakeholders (S) and leadership (L). The five key eco-mobility strategies are

  1. TD: transit-oriented development;
  2. AM: active mobility (non-motorized transportation);
  3. TM: transport management;
  4. GT: green transport (BBMW policy);
  5. IP: Integrated pricing schemes.

These five horizontal elements can be understood as the ‘push and pull’ factors between motorized vehicles, public transport and non-motorized transport modes.

Expanding the Equation

TD, or transit-oriented development, represents the development of public transport terminals as easy access points that the general public can reach by foot, bike or bus.

AM, or active mobility, represents the promotion of safe and friendly environments for cycling and walking to work. In many developing cities, this already represents a large proportion of the population. A greater potential is foreseeable and can be accessible through well-designed public bike-sharing systems, and more fundamentally safe, comfortable, and friendly walking and cycling environments. It is worth noting that wheelchairs and lightweight mobility scooters for the disabled or elderly should be considered within active mobility and have gained increasing focus in recent years, as they are related to the very basic mobility rights for every individual in a healthy society with integrity.

The importance of TM, or transport management, is not limited to traffic management and real-time dynamic route planners. Parking management is also a crucial element in medium and large developing cities. Vehicles that cruise for parking, if not well directed and managed, can account for over 30% of road traffic in downtown areas during peak times (Barter, 2013). This results in long cruising times for individual drivers, traffic congestion, unnecessary pollution and other costs.

GT, green transport, and the integration of Bike, Bus, Metro and Walk (BBMW), is aimed to improve active mobility and public transit systems with more integrated and convenient services (Chang, 2006). However, the major managerial challenge arises from the perspective of how to efficiently implement transit-oriented development and apply ICT to achieve the seamless services of BBMW.

Comparatively, IP,or integrated-pricing, may be the most complicated of the eco-mobility strategies. The advancement of electronic transaction technology allows more flexible and sophisticated pricing policies over the use of both public transit and private vehicles. The objective of IP is to reflect the true cost of using each transport mode. To impose the true cost on using private vehicles, which is higher than what travelers currently pay, has never been a simple task. People tend to address their own concerns from an individual perspective, but ignore system-level needs. It has been generally observed that the public is sensitive to paying more out-of-pocket, but may also adapt to the change and welcome it later on. Hence, it is for decision-makers and practitioners to take time and thoughtful efforts to communicate, thereby letting travelers know how they can choose to benefit both the society and themselves. IP has also the objective of implementing congestion pricing (Barter, 2005). It is expected that motorized vehicles need to pay for social costs including congestion, air pollution, noise and safety.

The Importance of Stakeholders and Leaders

The five eco-mobility strategies discussed conceptually define the general directions of sustainable mobility and the possibility of a better society to which they may lead. However, the successful fulfillment of these eco-mobility strategies is exponentially influenced by the involved stakeholders and leadership. Therefore, the behavior of stakeholders, S, in the proposed equation indicates the importance of how the interests between different stakeholders are coordinated, as eco-mobility related projects usually involve certain levels of Public-Private Partnership (PPP). The private sector is generally considered more efficient and flexible in attaining project objectives that are not necessarily consistent with public interests. The behavior of stakeholders has to be shaped based on well-defined objectives of EM implementation, which maximize the benefits of both sectors, thereby motivating reasonable efforts to pursue common and respective interests.

Above all, leadership, L, is the key factor, albeit abstract, for how an eco-mobility related project can be implemented, especially for many developing countries that are currently undergoing different stages of social development and reformation. Both the government and citizens may still be learning to balance the conflicts between various aspects of social development. Studies from theoretical and practical perspectives have extensively discussed the traits required for a leader. In the context of eco-mobility in developing cities, leadership may translate into holistic vision, systematic thinking, inspiring resolution, and a willing heart to listen to and understand the needs from different perspectives of a society.

Both S and L are located as the exponents in the proposed equation, which specifies their decisive effects. Leadership and a well-coordinated relationship between stakeholders can trigger strong momentum in changing traveller behaviour towards greener transportation and social development, resulting in an effective implementation of eco-mobility beyond expectation.

Other Important Issues

“Time” is an important hidden factor in the proposed equation, as the implementation of EM is also an interactive process involving the change of traveler behavior and land-use patterns. In the future, Intelligent Transportation System (ITS), based on the advancement of ICT, leads to the possibility of smart mobility that is more efficient in travel time and energy savings. The rapid penetration of smartphones redefines how traffic/travel information can be provided or shared pre-trip or en-route in a real-time context. This considerably facilitates the match between demand and supply, thereby enabling better use of available transport capacity. For instance, a traveler can easily check the taxi closest to him/her or the transit route with the shortest waiting time.

It is predicted that 80% of megacities may form in Asia (UN, 2013), and it is foreseeable that many of them may be located in developing countries. How to align the development of transport systems with land-use patterns to attain better urban design will be a critical issue for transport planners and managers. Following the notion of TD, one example can be “transit villages”. Such a deployment scheme utilizes public transit systems to relieve over-concentrated population and activity patterns, and within each village, short-distance transit services can be provided to cover the last or first-mile traveling. During their urbanization and modernization transitions, developing cities may undergo drastic remodeling, which may be the best time to begin planning with eco-mobility goals in mind.

Conclusions and Future Directions

Human society is testing the planetary limit with excessive resource consumption. As growing economies heavily rely on fossil fuels and unconstrained emission, it is critical to begin adopting strategies that balance this skewed development and return to a more sustainable course. This paper focuses on the status quos of transportation systems in developing countries and discusses the associated problems from a green transport perspective. We need to go back to the fundamentals of the eco-mobility problem, that is, to manage transportation demand as a function of revealed traveler behavior. Only based on an understanding of traveler behavior in response to the implemented strategies, is it possible to evaluate and adapt eco-mobility strategies to improve their effective implementation and to further educate travelers. Moreover, the investigation of an eco-mobility cannot be separated from the context of land-use modeling – which represents local features – or without knowing the city’s historical course of development. The implementation of EM implies the evolution of a society, a dynamic process that re-sculpts the scenery and reshapes its value. We perceive the important role of EM in sustainable development at this critical point for developing cities, and it is worth rigorous research to contribute to opportunities of a better future.

Yu-Ting Hsu

Assistant Professor of Civil Engineering, National Taiwan University

Yu-Ting Hsu is an assistant professor of Civil Engineering at National Taiwan University. He received his Ph.D. degree from Purdue University, and M.S. and B.S. degrees from the National Taiwan University. His research interests lie in traveler behavior, transportation system analysis, spatial network modeling, and evacuation problem.