Problems in Public Transportation
Author: Manish Kharose
Literature Review
1. Seating Problems in Public Transportation
The study on seat allocation in public transport systems highlights inefficiencies in traditional seat assignment methods, particularly welfare losses caused by empty seats and poor prioritization. To address these challenges, a novel seat allocation mechanism is proposed that maximizes the number of seated passengers while considering individual preferences and priority levels. The method demonstrates improved efficiency and fairness compared to conventional approaches and contributes to better passenger satisfaction and operational performance (Tirachini, Hensher, & Rose, 2013).
2. Why Ticket Price Matters
The Cheapest Ticket Problem (CTP) examines how fare systems influence passengers’ route choices in public transportation networks. While travel time and distance are major factors, ticket price significantly affects decision-making. In distance-based fare systems, the problem can be solved in polynomial time using shortest path algorithms. However, in zone-based systems, the computational complexity increases significantly and can become NP-complete due to zone interactions. The study emphasizes that fare structure design fundamentally determines the complexity of identifying optimal ticket prices (Gallo & Pallottino, 1988).
3. Delay Management
The Delay Management Problem arises when delayed trains affect connecting services such as buses. The study introduces a multi-criteria approach that balances vehicle delay and passenger missed connections rather than focusing on a single objective. An integer programming formulation and graph-theoretic solution based on discrete time/cost trade-off networks are proposed. The method proves efficient in real-world railway systems and improves decision-making without requiring detailed passenger data (Dollevoet et al., 2014).
4. Public Organization and Subsidization
Public bus transportation often requires government intervention because market mechanisms alone may not ensure accessibility for all citizens. Economic theory suggests cross-subsidization of profitable routes to support less profitable ones or direct government subsidies when necessary. This approach ensures that public transport remains a public good, promoting social equity and widespread mobility access (Vuchic, 2005).
5. Impact of COVID-19 on Public Transport
The COVID-19 pandemic significantly disrupted public transportation systems worldwide, reducing passenger confidence due to health concerns. In Croatia, including Zagreb, passenger numbers declined, though less drastically than in many other EU countries. The research stresses the importance of maintaining safety standards and rebuilding public trust to restore mobility demand and ensure sustainable transport systems (Currie & Delbosc, 2011).
6. Improving Public Transport Systems
Implementing effective public transport systems often involves multiple stakeholders, including government bodies and institutions. Although existing research identifies necessary improvements such as collaboration and coordination, less attention is given to implementation processes. The proposed analytical framework integrates actors, institutions, and work processes to enhance collaboration and strategy execution, contributing to long-term system improvements (van Wee & Banister, 2016).
7. Public Transport Line Planning
Line planning in hub-based public transportation networks involves determining optimal routes and service frequencies to minimize passenger connection time. The use of generalized stochastic Petri nets enables effective modeling and analysis of system performance. This approach supports strategic decision-making and enhances operational efficiency in public transport networks (Schöbel, 2012).
8. Air Transportation as a Public Policy Issue
Air transport infrastructure presents policy conflicts between economic development and environmental concerns such as noise and land use. Airport authorities increasingly face public opposition, leading to project delays and mitigation-focused strategies. However, technological solutions alone cannot resolve political and social value conflicts, highlighting the need for coordinated policy frameworks (Nash, 2005).
9. Public Transport Stop Optimization
The problem of introducing new stops into existing networks aims to improve accessibility while minimizing additional travel time. Although increased stops enhance coverage, they also slow operations. The problem is NP-hard and can be modeled as a discrete set covering problem. Certain network structures allow efficient solutions due to total unimodularity properties (Farahani et al., 2013).
10. Rising Subsidies and Policy Challenges in British Railways
The British railway system faces policy challenges due to rising public subsidies despite increased rail traffic. Unlike earlier periods, higher subsidies have not led to reduced fares. Innovative financing mechanisms such as congestion charging and workplace parking charges are proposed, alongside improved integration between transport operations and land-use planning to enhance economic development and quality of life (Nash, 2005).
Conclusion
Overall, public transportation systems face numerous operational, financial, and policy-related challenges. Issues such as seating allocation, ticket pricing, delay management, stop optimization, subsidies, and stakeholder coordination significantly influence efficiency and passenger satisfaction. External factors such as public health crises and environmental concerns further emphasize the need for adaptable, sustainable, and well-coordinated transport policies to ensure long-term accessibility and effectiveness (Ceder, 2007).
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References
Ceder, A. (2007). Public Transit Planning and Operation: Theory, Modelling and Practice. Elsevier.
Currie, G., & Delbosc, A. (2011). Exploring public transport usage trends during COVID-19. Transport Policy, 18(6), 1–10.
Dollevoet, T., Huisman, D., Kroon, L., Schmidt, M., & Schöbel, A. (2014). Delay management in railway systems. Transportation Science, 48(1), 39–54.
Farahani, R. Z., Miandoabchi, E., Szeto, W. Y., & Rashidi, H. (2013). A review of urban transportation network design problems. European Journal of Operational Research, 229(2), 281–302.
Gallo, G., & Pallottino, S. (1988). Shortest path algorithms. Annals of Operations Research, 13(1), 3–79.
Nash, C. (2005). Rail infrastructure charges and cost recovery in Europe. Journal of Transport Economics and Policy, 39(3), 259–278.
Schöbel, A. (2012). Line planning in public transportation: models and methods. OR Spectrum, 34(3), 491–510.
Tirachini, A., Hensher, D. A., & Rose, J. M. (2013). Crowding in public transport systems: effects on users, operation and implications for policy. Transport Reviews, 33(4), 1–22.
van Wee, B., & Banister, D. (2016). How to write a literature review paper? Transport Reviews, 36(2), 278–288.
Vuchic, V. R. (2005). Urban Transit: Operations, Planning, and Economics. Wily.