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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of The Korea Institute of Intelligent Transport Systems
Journal Basic Information
Journal DOI :
The Korea Institute of Inteligent Transport Systems
Editor in Chief :
Volume & Issues
Volume 13, Issue 6 - Dec 2014
Volume 13, Issue 5 - Oct 2014
Volume 13, Issue 4 - Aug 2014
Volume 13, Issue 3 - Jun 2014
Volume 13, Issue 2 - Apr 2014
Volume 13, Issue 1 - Feb 2014
Selecting the target year
Incident Detection for Urban Arterial Road by Adopting Car Navigation Data
Kim, Tae-Uk ; Bae, Sang-Hoon ; Jung, Heejin ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 1~11
DOI : 10.12815/kits.2014.13.4.001
Traffic congestion cost is more likely to occur in the inner city than interregional road, and it accounts for about 63.39% of the whole. Therefore, it is important to mitigate traffic congestion of the inner city. Traffic congestion in the urban could be divided into Recurrent congestion and Non-recurrent congestion. Quick and accurate detection of Non-recurrent congestion is also important in order to relieve traffic congestion. The existing studies about incident detection have been variously conducted, however it was limited to Uninterrupted Traffic Flow Facilities such as freeway. Moreover study of incident detection on the interrupted Traffic Flow Facilities is still inadequate due to complex geometric structure such as traffic signals and intersections. Therefore, in this study, incident detection model was constructed using by Artificial Neural Network to aim at urban arterial road that is interrupted traffic flow facility. In the result of the reliability assessment, the detection rate were 46.15% and false alarm rate were 25.00%. These results have a meaning as a result of the initial study aimed at interrupted traffic flow. Furthermore, it demonstrates the possibility that Non-recurrent congestion can be detected by using car navigation data such as car navigator system device.
A Priority Signal Control Strategy for Vulnerable Considering Traffic Flow - Focusing on crosswalks in coordinated arterial sections -
Ryu, Junil ; Kim, Wonchul ; Kim, Hyoungchul ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 12~19
DOI : 10.12815/kits.2014.13.4.012
A signal plan focused on vehicle traffic could easily overlook vulnerable priority signals, although the importance of vulnerable movements is increasingly recognized in recent years. Especially, the vulnerable are sometimes faced with dangerous situations when crossing roads with a signal plan based on design values of average, non-vulnerable persons. This study is focused on how to minimize the vehicle delay while simultaneously considering traffic flow and providing traffic safety by increasing road crossing time for pedestrians. For this purpose, a priority signal control strategy for the vulnerable, considering vehicle traffic flow, has been tested. Practical implication and a microscopic computer simulation has shown that the proposed method could provide a small decrease (about 6.2%) in pedestrian delay, a small increase (about 8.5~13.3%) in travel speed of passing traffic, and a considerable decrease (16.2~26.9%) in vehicle travel time. These findings suggest that the proposed signal control strategy could increase pedestrian safety and diminish delay of vehicle travel.
A Case Study of Panoramic Section Image Collection Method for Measuring Density - with matched images in the Seoul Beltway Sapaesan Tunnel -
Park, Bumjin ; Roh, Chang-Gyun ; Kim, Jisoo ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 20~29
DOI : 10.12815/kits.2014.13.4.020
Density is applied both three major macroscopic traffic variables (traffic volume, speed, and density) and two measures of effectiveness (MOE) for level of service (LOS) on highway (density and V/C). Especially, it is known for the most accurate MOE on evaluating the LOS of highway. Despite such importance, there is a lack of study on density relatively than other variables for its difficulty of measurement. Existing density estimation methods have some limitations such as density values of same traffic flow vary with collecting time. In this study, we researched actual density measuring method with panoramic image, after each CCTV images in the Sapaesan Tunnel on Seoul Ring Expressway are matched into one panoramic image. Analysis through the Central Limit Theorem shows that density of 24 1 km-images, which means 24 second, applies traffic situation well. That is to say that reasonable density value regardless of collecting time, and practical density which represents actual traffic flow can be taken in case of measuring density by suggested collecting cycle.
Communication System development based on Free Flow, Multi Lane
Woo, Rye-Na ; Lee, Ki-Han ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 30~37
DOI : 10.12815/kits.2014.13.4.030
The Electronic Toll Collection System based on Free-Flow Multi-Lane is needed to solve some yearly problems such as traffic congestion, safety accident, maintenance by hold-up of one way hi-pass system. The hi-pass communication system is first-in, first-out method in one way environment so, it can't handle various running patterns such as vehicle platoon, switching lane and passing in multi-lane environment. In this thesis we compared and analyzed the communication system of foreign countries ETCS operating system and domestic hi-pass communication system, then studied communication system which can run in multiple-way accepting existing hi-pass OBU. And we formed the communication system of Free-Flow Multi-Lane environment as a plan using incoherent of IR antenna and coherent of RF antenna. The communication system in Free-Flow Multi-Lane environment can be used not alone in parking garages but in expressways of ETCS and toll roads from now on.
Analysis on Spatial Impact Zone of the place_name on the Direction Sign in Urban Using the Road Sign Management System Database In Changwon city
Jung, In-Taek ; Rhee, Kyoung-Ah ; Chong, Kyu-Soo ; Lee, Young-In ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 38~47
DOI : 10.12815/kits.2014.13.4.038
Ministry of Land, Infrastructure and Transport (MOLIT) Affairs of Korean government improved RSMS to be linked with GIS data and now we have research foundation. In case of expressway and rural national highway, there is a referenced place-name for direction road sign, but there is no reference in urban road and is only a guideline. Direction signs in urban could not have consistent place-name and it is vary difficult to select the proper place-name. Based on the change of analysis environment and perception of road sign - related problem, This study is aimed to suggest how to deduce the spatial impact zone of place-name from DB and GIS in RSMS of Changwon City. The results indicated that there is a spatial difference between place-names according to whether is near or far on the road sign. It is expected that this method would be effectively used in case of new road sign and so the process to select the place-name would be simple.
Effect of Road Gradient on Fuel Consumption of Passenger Car
Do, Myungsik ; Choi, Seunghyun ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 48~56
DOI : 10.12815/kits.2014.13.4.048
Even though vehicle types, gradient, pavement conditions and types of pavement should be considered for estimating fuel consumption, existing models were developed as a function of vehicle types and vehicle speed. Therefore in this study, the model of fuel consumption was developed using field test data in order that effect analysis on the passenger vehicle fuel consumption by road gradient. At first, fuel consumption was measured in second-based, using GPS device and fuel consumption measurement device for development of fuel consumption model considered road gradient. The road gradient was classified as flatland, up-hill and down-hill. Development of model was using by regression model which vehicle speed(km/h) and fuel consumption(
). The on-road test proved that fuel consumption of passenger vehicle is affected by road gradient.
A Robotcar-based Proof of Concept Model System for Dilemma Zone Decision Support Service
Lee, Hyukjoon ; Chung, Young-Uk ; Lee, Hyungkeun ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 57~62
DOI : 10.12815/kits.2014.13.4.057
Recently, research activities to develop services for providing safety information to the drivers in fast moving vehicles based on various wireless network technologies such as DSRC (Dedicated Short Range Communication), IEEE 802.11p WAVE (Wireless Access for Vehicular Environment) are widely being carried out. This paper presents a proof-of-concept model based on a robot-car for Dilemma Zone Decision Assistant Service using the wireless LAN technology. The proposed model system consists of a robot-car based on an embedded Linux OS equipped with a WiFi interface and an on-board unit emulator, an Android-based remote controller to model a human driver interface, a laptop computer to run a model traffic signal controller and signal lights, and a WiFi access point to model a road-side unit.
A Study on the Analysis Effect Factors of Illegal Parking Using Data Mining Techniques
Lee, Chang-Hee ; Kim, Myung-Soo ; Seo, So-Min ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 63~72
DOI : 10.12815/kits.2014.13.4.063
With the rapid development in the economy and other fields as well, the standard of living in South Korea has been improved, and consequently, the demand of automobiles has quickly increased. It leads to various traffic issues such as traffic congestion, traffic accident, and parking problem. In particular, this illegal parking caused by the increase in the number of automobiles has been considered one of the main reasons to bring about traffic congestion as intensifying any dispute between neighbors in relation to a parking space, which has been also coming to the fore as a social issue. Therefore, this study looked into Daejeon Metropolitan City, the city that is understood to have the highest automobile sharing rate in South Korea but with relatively few cases of illegal parking crackdowns. In order to investigate the theoretical problems of the illegal parking, this study conducted a decision-making tree model-based Exhaustive CHAID analysis to figure out not only what makes drivers park illegally when they try to park vehicles but also those factors that would tempt the drivers into the illegal parking. The study, then, comes up with solutions to the problem. According to the analysis, in terms of the influential factors that encourage the drivers to park at some illegal areas, it was learned that these factors, the distance, a driver's experience of getting caught, the occupation and the use time in order, have an effect on the drivers' deciding to park illegally. After working on the prediction model, four nodes were finally extracted. Given the analysis result, as a solution to the illegal parking, it is necessary to establish public parking lots additionally and first secure the parking space for the vehicles used for living and working, and to activate the campaign for enhancing illegal parking crackdown and encouraging civic consciousness.
A Study on Low-Floor Bus Routes Selection - Focused on the Case of Jeollabuk-Do -
Lee, Chang-Hyun ; Kim, Sang-Youp ; Kim, Jai-Sung ;
The Journal of The Korea Institute of Intelligent Transport Systems, volume 13, issue 4, 2014, Pages 73~85
DOI : 10.12815/kits.2014.13.4.073
Approaching to aging society with increasing transportation vulnerable, most developed countries has positively promote low-floor bus. Such circumstance in Korea has plan to introduce low-floor bus to intra-city bus system which accounted for 30 percent of total number of buses however there is no specific operating plan for this matter. According to the revealed preference study on bus service, the study shows that the efficiency of low-floor is relatively low than that of other buses, therefore, it is necessary to establish feasible plan for bus route selection. Thus, this study is to conduct research on analyzing trip characteristics of transportation vulnerable and establish bus route selection measures for low-floor bus. The result from the survey in Jeollabuk-do Province reveals that the trip purpose of transportation vulnerable is mainly for welfare and medical service, which was made less than 6 times a week. Futhermore, 37.6 percent of transportation vulnerable use buses, thus, it is essential to improve its service quality for enhancing user's convenience and safety. In that transportation vulnerable O-D needs to be established and forecasts future demand for selecting optimal bus route. According to the estimation, route passing through densely populated areas with transportation vulnerable should take the first priority, city circular and other route would be next. Moreover, it is economically efficient that areas populated more than 200,000 with fixed route and less than 200,000 with limited route responsive to demands would be feasible plans. This study will have greater an impact on transportation planning and further research on transportation vulnerable.