{"title":"Advances by using Mobile Phone Data in mobility analysis in the Netherlands","authors":"K. Friso, Abu Toasin Oakil","doi":"10.1109/MTITS.2019.8883346","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883346","url":null,"abstract":"In this paper we will present the progress we made in the past few years by extracting mobility information from Mobile Phone Data (MPD). MPD is collected continuously, 24-hours a day and every day of the year (24/7/365). Using these data (more than 12 billion location-based events monthly in the Netherlands) both regular and irregular traffic patterns can be determined at local, regional and national scales for any time period, and of course the average working day, which is commonly used for transport policy purposes.MPD-data shows reliable information that can be used for monitoring of traffic, improving the quality of origin-destination matrices (OD-matrices) in transport models but also in direct use determining traffic flows. Regarding the improvement of OD-matrices in transport models, we showed in several studies that the distribution, i.e. the structure of the synthetic OD-matrix of transport models can be improved significantly using MPD-data. For example, MPD data perform much better for OD-relations that are difficult to model with the gravity model, where historical patterns and spatial policy differ in a significant way from the general gravity principles between OD pairs. Such an example is the Zoetermeer–The Hague-connection and the Almere-Amsterdam connection in the Netherlands.Recently progress is made in the determination of traffic flows for all roads in the Netherlands directly from MPD-data. Currently, we work on presenting up-to-date traffic flows at national level fully based on MPD in an online platform which can be updated on a regular base (say quarterly or monthly), including daily profiles and per hour of the day.Of course, the traditional transport models still will be necessary to determine growth factors. A transition to data-driven models for the current situation however will become regular practice.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133386355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Albrecht Michler, Paul Schwarzbach, O. Michler, Martin Sommer, Daria Bachurina, J. Trinckauf
{"title":"Decentralized vehicle-mounted Safety Logic for Secondary Railway Lines based on GNSS Positioning and Integrity Monitoring","authors":"Albrecht Michler, Paul Schwarzbach, O. Michler, Martin Sommer, Daria Bachurina, J. Trinckauf","doi":"10.1109/MTITS.2019.8883352","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883352","url":null,"abstract":"Railway operation is based on various safety critical control and signalling operations which are conventionally realized by stationary infrastructure. Acquisition, maintenance and operation of these components are generally very cost-intense and compromise the future of railways lines with low traffic volumes. These so called secondary railway lines are essential to satisfy mobility requirements especially in rural regions and differ from conventional main routes as they provide several operational characteristics (e.g. single-laned) which enables simplified, decentralized administration of route setting and train movements. In the work presented, a general overview of a vehicle-mounted safety logic concept which includes a detailed description of the essential probabilistic multisensor GNSS based train position estimation module is suggested. The localization and tracking is performed by adopting an Extended Kalman Filter (EKF). Additionally, a Fault Detection (FD) Receiver Autonomous Integrity Monitoring (RAIM) for safety critical applications is used to ensure integrity of the estimated positions. The GNSS parts of the developed localization and integrity module are validated using a real world Software Defined Radio (SDR) recorded GNSS-RF-dataset which is played back in a laboratory environment enabling reproducable validation cases with different GNSS receivers and algorithm parametrizations.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133806932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Mattas, M. Makridis, G. Botzoris, B. Ciuffo, B. Papadopoulos
{"title":"Fuzzy surrogate safety metrics","authors":"K. Mattas, M. Makridis, G. Botzoris, B. Ciuffo, B. Papadopoulos","doi":"10.1109/MTITS.2019.8883391","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883391","url":null,"abstract":"Road safety is one of the most significant performance indicators in traffic networks. Automation technologies can provide significant opportunities for improvement. However, evaluating the risk involved in using these technologies is not a trivial task. One of the existing tools in traffic safety evaluation are the surrogate safety metrics (SSM), which can identify conflicts and near misses. Nevertheless, existing SSMs have been mostly developed for conventional vehicles and have important disadvantages when used for the assessment of automated vehicles (AVs) or connected automated vehicles (CAVs). SSMs can be classified in critical and proactive safety metrics. Critical safety metrics such as TTC identify situations where there is an imminent danger and the response should be imminent. Proactive metrics such as DSS (Difference between Space distance and Stopping distance) identify unsafe situations where evasive action is proposed but it may not be immediately necessary. In this light, two novel SSMs for rear end collisions have been developed, based on fuzzy logic; the proactive fuzzy surrogate safety metric (PFS) and the critical fuzzy surrogate safety metric (CFS). Results of this work show that PFS and CFS are robust indicators in classifying a situation to be totally safe, certainly unsafe or even a little risky, corresponding to the spectrum of different behaviors. The proposed metrics have been tested on synthetic trajectory data and results show their robustness on evaluating the safety level in the longitudinal direction.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129657735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Can ICT influence choice behavior? The role of mobile applications supporting Bike-Sharing Systems","authors":"A. Nikiforiadis, K. Chrysostomou, G. Aifadopoulou","doi":"10.1109/MTITS.2019.8883316","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883316","url":null,"abstract":"It is commonly accepted that Bike-Sharing Systems can significantly contribute to the promotion of sustainable urban mobility and this is why more and more cities are introducing such systems in their mobility systems. One of the most important and unexplored parameters for their success, is the proper utilization of technology. The paper investigates whether a mobile application that provides several advanced services to users could help increase the level of the system’s use. To provide an answer, a questionnaire survey has taken place in Thessaloniki, Greece addressed to both existing users of the bike-sharing system operating in the city and to other residents who are potential users of the system. Through the analysis of their responses, the most useful services that an application can provide are identified. Also, a decision tree has been developed to classify users based on the likelihood of shifting to or using more the bike-sharing system. The results show that people aged between 18 and 54, who are not currently users of the system, are those most likely to be attracted to the system due to such an app. On the other hand, people over the age of 54, who work as private employees or are retired, are considered unlikely to be affected by such an app. Car usage frequency, education and income also appeared to have an impact on people's decision to use the system more often due to the app.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124502505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Towards Designing Pre-trip Traveler Information Systems: A Quantitative Evaluation","authors":"Dorothee Wittek, Klaus Goffart, K. Bogenberger","doi":"10.1109/MTITS.2019.8883358","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883358","url":null,"abstract":"The progressing traffic collapse burdens the economy, the environment, and the traveler. In order to reduce the monetary, temporal, and individual costs produced by traffic, we need innovative multi-modal pre-trip information systems (IS). Without multi-modal pre-trip IS, planning individual mobility and selecting mobility options is still a pain point for many travelers. Hence, many travelers stick to habitual mobility behavior without weighing up different alternatives. Multi-modal solutions will, however, facilitate individual mobility planning by presenting alternatives proactively and thus reducing the cognitive load of modal and temporal choices. Since the integration of multi-modal mobility services in the everyday life of the end-user is still in its infancy stages, this paper focuses on the customer-centered development of multi-modal pre-trip IS. Thereby, this paper described the implementation and evaluation (n = 174) of pragmatic (i.e., information-based) and hedonic (i.e., pleasure-oriented) features into a smart mirror prototype. The results of our regression analysis shows that both pragmatic and hedonic qualities and the users’ experienced need fulfillment significantly predict the users’ intention to use the prototype. In conclusion, our implementation and evaluation contributes to the further development of multi-modal pre-trip IS. Our results contribute to our understanding of how to motivate travelers to use multi-modal mobility services and how we can reduce the travelers’ cognitive load during the mobility-centered decision-making process.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131168091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. L. Ruscelli, S. Fichera, F. Paolucci, A. Giorgetti, P. Castoldi, F. Cugini
{"title":"Introducing Network Softwarization in Next-Generation Railway Control Systems","authors":"A. L. Ruscelli, S. Fichera, F. Paolucci, A. Giorgetti, P. Castoldi, F. Cugini","doi":"10.1109/MTITS.2019.8883348","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883348","url":null,"abstract":"The advent of softwarization implies a re-thinking of network design and management that positively impacts on service provisioning and maintenance efficiency. In particular, Software Defined Networking and Network Function Virtualization introduce abstraction techniques that are suitable for an easy and efficient deployment of service chain and for the use of general purpose hardware devices. The introduction of these paradigms in the railway domain is challenging due to its strict service and safety requirements, however it represents a promising approach enabling a disruptive improvement of the management systems and paving the way for next-generation railway control systems.This paper discusses and proposes the adoption of SDN/NFV (Software Defined Networks/Networks Function Virtualization) framework in railway control networks. In particular, some possible promising directions of investigation are drawn considering service orchestration and edge-based NFV services. Furthermore, two different applications are described focusing on SDN and NFV, respectively. An improved SDN failure recovery mechanism is proposed and evaluated showing the improvement in terms of recovery time. Instead, the introduction of configurable orchestration systems aiming to dynamically instantiate required services on Virtual Machines directly in the railway peripheral places by means of edge computing solutions for maintenance operations of peripheral assets is described and discussed.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124164611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Statistical Analysis of Temporal Headway Development through Empirical Data in Urban Traffic","authors":"Maximilian Kumm, M. Schreckenberg","doi":"10.1109/MTITS.2019.8883284","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883284","url":null,"abstract":"Automated vehicles are expected to play a major role in road traffic within the next decades. Thus, it becomes necessary to manage the oncoming partly automated traffic between classical and automated vehicles. In this context, human behavior represents a major source of uncertainty. In order to make different driving behavior as predictable as possible, we chose a statistical approach by collecting empirical data from classical road traffic. For this purpose, a stationary infrared sensor system including multiple measuring units to detect passing vehicles was developed. The involved sensors were attached to lamp posts next to an urban road with a speed limit of 50 km/h. From the generated data set, a statistical analysis of the change in temporal headway between consecutive vehicles is derived. Additionally, an empirically ascertained vehicle speed distribution is presented. Last but not least, a suitable heavy tail distribution is used to fit the underlying data of the occuring temporal headways. All in all, the presented results could help an automated vehicle to merge into the flowing traffic on a major road in an efficient way considering safety, energy, and comfort criteria.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128369253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Open Toolbox for Integrated Optimization of Public Transport","authors":"Florian Fuchs, F. Corman","doi":"10.1109/MTITS.2019.8883335","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883335","url":null,"abstract":"Public transport networks are a vital factor in the development of urban and peri-urban mobility. Their design is the main contributor to their possible success. Determining line planning, timetabling and vehicle scheduling is a complex set of tasks, which are interconnected in many ways. The development is typically tackled by hand incorporating multiple objectives in a time-consuming way. Within each task, decisions require multi-objective optimisation. These planning steps are usually carried out sequentially to simplify matters. However, research has shown that integrated approaches lead to superior solutions.On the other hand, integrated approaches increase computational complexity. We report on a toolbox which can seamlessly integrate the three tasks (line planning, timetabling, vehicle scheduling). A general framework formalises all relevant information and ensures the exchange and interoperability between intermediate solutions of the three separated problems. Then, we formulate the three problems to iterate between the planning steps within an approach inspired by the eigenmodel structure [1]. We refine existing approaches to minimise costs and travel time jointly. Thanks to the extensions and framework we may shrink the size of the problems without loss of optimality. The eigenmodel can significantly reduce complexity, while the extended formulations for line planning, timetabling and vehicle scheduling allows consideration of all relevant limitations.We report a study in the region of Bern, Switzerland. The solution computed for a network of regional buses significantly decreases the demanded effort of the planners. The added value lies in the improved quality of the solution and the shorter response time, enough to support interactive optimisation.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133626856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Macroscopic fundamental diagrams for train operations - are we there yet?","authors":"F. Corman, Jonas Henken, M. Keyvan-Ekbatani","doi":"10.1109/MTITS.2019.8883374","DOIUrl":"https://doi.org/10.1109/MTITS.2019.8883374","url":null,"abstract":"We discuss the concept and applicability of macroscopic descriptions of operations for railways systems. The concept of macroscopic or network fundamental diagram (MFD or NFD) for vehicular traffic in an urban network has been recently found empirically. The notion of MFD/NFD has been exploited to understand the real-time traffic state and the relevant control actions to keep traffic flow smooth. It has been used predominantly as a monitoring tool in traffic control strategies, which helps mitigate congestion. The railway mode has the same goals of maximizing speed and flow, though it has many substantial differences with vehicular traffic. We investigate the theoretical possibility to derive macroscopic representations of the traffic flow theory macroscopic variables; i.e. speed, density, flow, for railway traffic. We do this with closed formula expression when possible, or with simulation tools when the complex setup does not allow any analytical solution. The implications for applicability of macroscopic representations in railways or railway-like systems are discussed.","PeriodicalId":285883,"journal":{"name":"2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126737119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}