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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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International Journal of Highway Engineering
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Journal DOI :
Korean Society of Road Engineers
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Volume & Issues
Volume 14, Issue 6 - Dec 2012
Volume 14, Issue 5 - Oct 2012
Volume 14, Issue 4 - Aug 2012
Volume 14, Issue 3 - Jun 2012
Volume 14, Issue 2 - Apr 2012
Volume 14, Issue 1 - Feb 2012
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Behavior and Resistance to the Reflection Crack of Composite Pavement with Waterproof Membrane
Suh, Young-Chan ; Lee, Yong-Mun ; Kim, Jun-Hyung ; Cho, Nam-Hyun ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 1~10
DOI : 10.7855/IJHE.2012.14.2.001
As old concrete pavements of over 20years in age are increasing in expressways, the repair and rehabilitation of concrete pavement have become an important issue. Although asphalt overlay is widely used as an alternative to rehabilitate the old concrete pavement, problems due to infiltrated water such as reflection crack and pothole are imposing a very serious threat to its performance. This study proposes waterproof membrane as a solution to minimize the damage due to reflection crack and infiltrated water, and accelerated pavement testing was carried out for the performance comparison of composite pavement with waterproof membrane and ordinary tack coating. The experiment used water spraying to simulate rainfall, and the behavior and moisture resistance characteristics of overlay pavement were analyzed. The experimental result indicated that the strain pattern of waterproof membrane section differed from ordinary tack coating section because waterproof membrane caused the asphalt pavement and concrete pavement to move together. Additionally, since waterproof membrane minimized the infiltration of water and delayed the occurrence of reflection crack by about 70% in comparison to ordinary tack coating method. Moreover, the damage due to infiltrated water also decreased.
Study on a Prediction Model of the Tensile Strain Related to the Fatigue Cracking Performance of Asphalt Concrete Pavements Through Design of Experiments and Harmony Search Algorithm
Lee, Chang-Joon ; Kim, Do-Wan ; Mun, Sung-Ho ; Yoo, Pyeong-Jun ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 11~17
DOI : 10.7855/IJHE.2012.14.2.011
This research describes how to predict a model of the tensile strain related to the fatigue cracking performance of several asphalt concrete structures through design of experiments(e.g., Response Surface Methodology) and harmony search(HS) algorithm. The axisymmetric analysis program of finite element method, which is the KICTPAVE, was used to determine the strain level at the interface layer between asphalt layer and lean concrete layer. Once the training database set of various strain levels was constructed under the several condition of layer stiffnesses and thicknesses in the asphalt concrete structures, the data set was trained through the HS algorithm in order to determine the regression coefficients defined based on a response surface methodology. Furthermore, the testing set, which was not used for the training procedure of HS algorithm, was also constructed in order to evaluate whether the regression coefficients of a prediction model can be appropriately applied for other cases in asphalt concrete structures.
Study on the Noise Characteristics of Bridge Deck Pavements in Seoul Inner Ring Road
Lee, Sang-Yum ; Jin, Jung-Hoon ; Mun, Sung-Ho ; Moon, Hak-Ryong ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 19~28
DOI : 10.7855/IJHE.2012.14.2.019
A measuring technique for tire-pavement interaction noise that uses a proposed noble close proximity(NCPX) method, which has been proofed in terms of the reliability and consistency of interaction noise measurement through several researches, equipped with surface microphones has been adopted in order to perform bridge deck pavement noise evaluations on four different pavement surfaces. Through field testing measurement of bridge deck pavement in Seoul inner ring road, the appropriate noise-measuring procedures have been used for evaluating the noise characteristics of four different surfaces. Measuring results show that tire-pavement noise levels vary depending on the surface types and vehicle speeds. Furthermore, the different characteristics of tire-pavement interaction noise can be found before and after the new surface construction of bridge deck pavements in terms of the 1/3 octave band analysis of vehicle speed.
Estimation of Dynamic Load Amplification Factors under Various Roughness Indices and Vehicle Classes
Choi, Jun-Seong ; Seo, Joo-Won ; Kim, Jong-Woo ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 29~36
DOI : 10.7855/IJHE.2012.14.2.029
In this study, frequently passing vehicles with two, three, four, and five axles were chosen through traffic volume analysis in Kyung-In Expressway in order to analyze how the road roughness and vehicle speed affect on the dynamic loads for roads in various vehicle classes. Dynamic loads according to chosen vehicles are estimated by TruckSim program. Dynamic load amplification factor is ratio between dynamic and static loads, and it is also determined for each vehicle classes. From the result of dynamic loads estimated by the dynamic load amplification factor, it is shown that for three-axles vehicle, when IRI is 3.5 and vehicle speed is 100km/hr, asphalt pavements receive additional 36% of static loads in maximum. The analysis of the amplification factor according to each vehicle classes also indicates that the amplification factor increases as the distance between the axles becomes smaller and each axle receives more loads.
An Estimation of Piezoelectric Power as Connection Methods of Piezoelectric Ceramic
Kwon, Soo-Ahn ; Lee, Jae-Jun ; Moon, Hak-Yong ; Ryu, Seung-Ki ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 37~44
DOI : 10.7855/IJHE.2012.14.2.037
Natural disasters such as hurricanes, floods frequently occurs in the world. The cause of the natural disasters that occurs due to global warming because of increasing of global greenhouse gas emissions. To prevent the global warming, lots of researchers are studying renewable energy area. In order to protect grobal warming, government is trying to reduce green gas emissions under "Low Carbon Green Growth Policy" and investing climiate-friendly industries such as renewable energy harvesting. Research team is developing a renewable energy system that harvests mechanical energy imparted to road from driving vehicles and generates it into renewable electricity. This paper presents the research results of size effect of the piezoelectric ceramic and connection of piezoelectric ceramics. Power characteristics of piezoelectric ceramic as function of experimental variables were measured and analyzed.
A Study on Joint Position at Concrete Pavement with Box Culverts
Park, Joo-Young ; Sohn, Dueck-Su ; Lee, Jae-Hoon ; Jeong, Jin-Hoon ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 45~53
DOI : 10.7855/IJHE.2012.14.2.045
Hollows are easily made and bearing capacity is lowered near underground structures of concrete pavement because of poor compaction and long term settlement of the ground. Distresses occur and lifespan is shortened because of larger stress induced by external loadings expected than that in the design. In this paper, the distresses of the concrete pavement slab over box culverts were investigated at the Korea Expressway Corporation(KEC) test road. The transverse cracking of the slabs over the culverts was compared between up and down lines with different soil cover depth. The box culvert without soil cover and concrete pavement were modeled and analyzed by the finite element method(FEM) to verify the transverse cracking at the test road. Wheel loading was applied after self weight of the pavement and temperature gradient of the concrete slab at Yeojoo, Gyeonggi where the test road is located were considered. Positions of maximum tensile stress and corresponding positions of the wheel loading were found for each loading combination. Joint position minimizing the maximum tensile stress was found and optimal slab length over the culverts with diverse size were suggested.
An Alternative Effectiveness Analysis on Anti-Dew Road Sign
Park, Jae-Hong ; Yun, Duk-Geun ; Sung, Jung-Gon ; Kang, Weon-Eui ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 55~61
DOI : 10.7855/IJHE.2012.14.2.055
Road signs are important facilities in terms of providing information to driver, they are helpful for driver's judgment as deliver it's own information. However if there is occurrence dew on the road sign because of the change of temperature and humidity, it can be cause of accidents. Therefore it is necessary to develop anti-dew or dew resistance technology. In this research the anti-dew technologies such as insulation road sign and anti-dew film were compared with normal road sign, and the effectiveness analysis was conducted for each alternatives. The quantity of dew on the road sign was check using ANOVA and Tukey HSD and the relation between the retro-reflectivity and quantity of dew on the sign was check using Pearson correlation coefficient. As a result, the sample of anti-dew film attached road sign showed lesser quantity of dew compared with normal road sign. After 90 seconds, the difference of dew quantity for anti-dew film and insulation road sign showed statistically significant result. The relation of between quantity of dew and retro-reflectivity was inverse correlation. As a result, when analyzed the quantity of dew and retro-reflectivity a point of view anti-dew effectiveness, the anti-dew film and insulation road sign showed meaningful result.
Empirical Study of Simple Grade Facilities Gap Utilizing Micro Simulation Analysis
Kim, Young-Il ; Rho, Jeong-Hyun ; Kim, Tae-Ho ; Park, Jun-Tae ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 63~72
DOI : 10.7855/IJHE.2012.14.2.063
Current analysis method drives an irrationality a road, signal operation and cause confusion of road such as weaving, bottleneck being not including main traffic flow in analysis subject. Therefore, this research develops analysis method of simple grade facilities to grasp target equipment relationship effect as virtue process to grasp effect of simple grade facilities in city and there is the purpose to apply optimum space of analysis intersection. In this paper, get at effect of simple grade facilities in urban area, as well as, develop new analysis method of simple grade facilities and adapt optimal interval of intersection point. New method of this paper reasonably estimated to optimal interval of the traffic flow(diverge area, merge area). As research result, analysis method to present in this research could clarify vague part of existing analysis method and presume reasonable result. Optimal interval of diverge and merge area with facilities was appeared more then 65m from the main line and more then 45m from the frontage road. Meaning of this paper as follow. First, the effect of simple grade facilities estimate. as consider optimal interval of simple grade facilities in urban can plan efficiently operation planning of road and signal in connection with nearby intersection. Second, new method then previous methods. planner of transportation easily access due to run parallel with existing method. Third, new method is contained through traffic volumes. the existing method did not reflect one. and this new method reduce error to the minimum. when analysis of intersection and link. Fourth, using the new method propose improvement plan with road operation and signal operation.
Methodology for Evaluating Cycling Environment using GPS-based Probe Bicycle Speed Data
Hong, Du-Ho ; Kil, Eun-Ji ; Kim, Su-Jin ; Joo, Shin-Hye ; Oh, Cheol ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 73~81
DOI : 10.7855/IJHE.2012.14.2.073
The bicycle is an environment-friendly transport mode leading to a more sustainable transportation system. To innovatively increase the use of bicycle as a significant transport mode, bicycling-friendly roadway environment should be provided. From this perspective, the scientific and effective assessment of roadway environment in term of the bicyclist perception for safety and comfortability is of keen interest. This study develops a methodology for evaluation cycling environment using probe bicycles. A global positioning system(GPS) based speedometer was used to collect bicycle speed data. Cycling comfortability index(CCI) was derived for the purpose of evaluating cycling environment. The proposed CCI can be effectively used as an assessment tool in the field of bicycle transportation.
Comparative Analysis on the Delay of Rotary and Roundabout by Operational Type
Park, Byung-Ho ; Kim, Kyung-Hwan ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 83~91
DOI : 10.7855/IJHE.2012.14.2.083
This study deals with the operational efficiency of roundabout. The roundabouts generally have such the merits as high capacity, delay reduction, safety improvement, and others. Circular intersection can be divided into the rotary and roundabout according to travelling priority. The objective of this study is to comparatively analyze the operational efficiency of rotary and roundabout by scenario. In pursuing the above, this study gives the particular attentions to developing 256 scenarios according to the directional and entering traffic volume and analyzing the delay using VISSIM. The main results are as follows. First, the average delay of rotary was analyzed to be 1.56-8.74 times of roundabout. Second, the operational efficiencies of rotary and roundabout were analyzed to be better in the case of bigger differences in the traffic volumes between the main and minor roads. Third, the average delay of the 4-legged was evaluated to be 1.77-11.70 times of 3-legged intersection. Finally, 2-lane intersection (3-legged & 4-legged) was analyzed to be 2.02-2.23 times of 1-lane intersection.
A Study on the Spacing Distrubution based on Relative Speeds between Vehicles -Focused on Uninterrupted Traffic Flow-
Ma, Chang-Young ; Yoon, Tae-Kwan ; Kim, Byung-Kwan ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 93~99
DOI : 10.7855/IJHE.2012.14.2.093
This study analyzes traffic data which are collected by VDS(Vehicle Detection System) to research the relationship between spacing distribution and vehicles' relative speed. The collected data are relative speed between preceding and following vehicles, passing time and speed. They are also classified by lane and direction. For the result of the analysis, in the same platoon, we figure out that mean of spacing is 40m, which can be a value to determine section A to D. To compare spacing according to time interval, this study splits time intervals to peak hour and non-peak hour by peak hour traffic volume. In conclusion, vehicles in peak hour are in car following because most drive similar speed as preceding vehicle and they have relatively small spacing. On the other hand, non-peak hour's spacing between vehicles is bigger than that of peak hour. This implies driver's behaviors that the less spacing, the more aggressive and want to reduce their travel time in peak hour, whereas most drive easily in non-peak hour and recreational trip purpose because of less time pressure.
Accident Models of Circular Intersection by Cause Using ZAM
Na, Hee ; Park, Byung-Ho ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 101~108
DOI : 10.7855/IJHE.2012.14.2.101
This study deals with the traffic accidents of circular intersections in Korea. The goal of this study is to develop the traffic accident models using ZAM. The main results are as follows. First, in the case of 'violating the operational method of intersection', ZINB(zero-inflatednegative binomial) models were analyzed to be the best fit to the data. Second, in the case of' no maintaining the safe distance', ZINB models were also analyzed to be the best fit to the data. Finally, such the common variables as traffic volume and width of circular roadway were selected as the independent variables. The more traffic volume and the less width of circulatory roadway were evaluated to make the more accidents. Such the specific variables as the number of approach lanes and speed reduction facilities were selected as the explanatory variables. The more approach lanes and the less speed reduction facilities were evaluated to give the more accidents. This study might be expected to give some implications to the accident research on the circular intersections.
Analysis on Propagation of Highway Traffic Flow Turbulence at Entrance-Ramp Junctions
Kim, Tae-Heon ; Roh, Chang-Gyun ; Kim, Won-Gil ; Son, Bong-Soo ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 109~116
DOI : 10.7855/IJHE.2012.14.2.109
This study is aiming to separate highway entrance ramps from impact zones which are considered the characteristics and real traffic situations in each lane and section. The results of this study can be applied to Lane Control System and control the traffic flow for highway more efficiently. Based on earlier studies which analyzed impact zones in entrance-ramp junction using the standard deviation of speed, this study divides more segmentalized impact zones according to the degree of turbulences. As a result of this study, about 800m of intervals, from 500m of upper flow (1,2,3 lane) to 300m of lower flow(2, 3 lane), shows similar traffic characteristics influenced by entrance ramp directly.
Evaluation of Road Safety Audit on Existing Freeway by Empirical Bayes Method
Mun, Sung-Ra ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 117~129
DOI : 10.7855/IJHE.2012.14.2.117
Road safety audit is the preventive enhancement strategy for safety. : it gets rid of beforehand the potential factor of a traffic accident in the stage of road planning and design and it evaluates the appropriation for road geometric structure or safety facility to prevent traffic accident in the stage of operation after the construction. Since this strategy is introduced to our country in the early 2000s, various projects have been processed and it was legislated recently. And now, the evaluation of past project for its continuation is needed. Therefore, in this study the evaluation of road safety audit on existing freeway is performed. The spatial extent of this study is Yong-dong line on which the safety treatment was executed in 2005 and 2006. And, the temporal range of this study is each 2-year of before and after from 2005 and 2006. The empirical bayes method of observational evaluation studies is applied to analyze. As a result, there is an effect of improvement on most of treated sections. But there is ineffective or negligible on some sections. Compared with the detail of treatment on each section, the effect of multiple or various treatments is good for that section. On the other hand, the section on which effect doesn't appear is the result of single or unimportant treatments. Throughout these results, the concrete analysis can be performed and the countermeasures designed for the section on which effect doesn't appear. Also it is used as reference to the future plan and direction of road safety audit on existing freeway.
Development of the Expected Safety Performance Models for Rural Highway Segments
Oh, Ju-Taek ; Kim, Do-Hoon ; Lee, Dong-Min ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 131~143
DOI : 10.7855/IJHE.2012.14.2.131
The past researches on roadway segment safety estimation focused on intersections, which are the primary traffic accident regions. The past researches on roadway segments, However, analyzed the effects of certain factors on the traffic accident occurrence rate by organizing the individual geometric structures of the roads, and there is still a dearth of researches on the development of a traffic accident estimation model for rural roadway segments. Therefore, this research focused on rural two-lane and multilane roadway segments and developed traffic accident estimation models through the application of statistical techniques. This is required to explain such high frequency of zero counts in the traffic accident data. In this research, it was found that the Hurdle model is more suitable than the Poisson or negative binomial-regression model for explaining the excess zeros case. In addition, main variables were chosen to estimate their effects on traffic accident occurrence at rural roadway segments, and the safety at such rural roadway segments was estimated. In this research, it was assumed that there are different factors that affect the safety at two-way lane and multilane roadway segments, and a traffic accident estimation model was developed by dividing the two-way lane and multilane roadway segments.
Analysis of Bus Accidents Influential Factors on Bus Exclusive Lane in Seoul (Bus Median Lane and Bus Curb Lane Defined)
Lim, Jun-Beom ; Hong, Ji-Yeon ; Chang, Il-Jun ; Park, Jun-Tae ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 145~155
DOI : 10.7855/IJHE.2012.14.2.145
At present, Seoul City is putting the bus exclusive lane system into practice according to mass transit revitalization policy. Starting with the installation of roadside bus exclusive lane in the past, at present, even the road sections for central- lane bus exclusive lane system are on the increase. The purpose of this research is to analyze the factors giving impacts on bus accident on central bus exclusive lane and roadside bus exclusive lane. In case of the central bus exclusive lane, the 6 variables, such as the number of bus routes, number of access & entrance to central lanes patterns, whether the stop line of central lanes retreats or not, separated distance between the stop line of central lanes and crosswalks, traffic volume, and number of bus routes stopping at bus stops on reversible lanes, were found to have a significant influence on bus accidents. In case of roadside bus exclusive lane sections, the four variables such as the number of right-turn bus routes, whether to be chronic illegal parking & stopping, time for the walk signal, and forms of land use, etc. were found to have a significant influence on bus accident.
An Extent Estimation Caused by Road Sign Using Graphic Theory
Chong, Kyu-Soo ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 157~164
DOI : 10.7855/IJHE.2012.14.2.157
Road signs serve guide informations for efficient traffic control and are regulated by Road Sign Regulation. But few road managers break the regulation because of civil complaint and cause driver's confusion. Also, as promote the road name guide signs and the new road signs on expressway, the driver's confusion being increased. This study analysis factors of driver's confusion, calculates limited information on road signs and specifies modes of driver's confusion caused by road signs. The traffic accident data during 3 years is calculated in order to see how much intimate connection between the road sign confusion and the traffic.
Development of an Performance Evaluation Method for Vehicle Detector Speed Measurement Applying Uncertainty in Measurement
Lee, Hwan-Pil ; Kim, Yong-Man ; Kang, Dong-Yun ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 165~174
DOI : 10.7855/IJHE.2012.14.2.165
In this study, a method for evaluating the performance of speed measurements was developed to assess the qualities of a vehicle detector. The evaluation method considers measurement errors that are reflected in a reference speed. For this, the concept of uncertainty in measurement was applied to the development method. Other factors such as precedent study, statistical processing techniques, and speed measurement performance method of traffic enforcement equipment and vehicle detection systems were also reviewed. Through this process, the problems of the existing evaluation methods were derived and developed for the new performance evaluation method. Vehicle detectors that are installed in the field were evaluated using the traditional assessment methods and the developed method. As a result, for traditional assessment methods, it was found that evaluation criteria are acceptable, while developed method's criteria are not acceptable. This means that traditional assessment methods do not sufficiently consider errors in measurement, so it has potential to over-estimate for performance of evaluation equipment. On the other hand, it was represented that the developed method should include variable factor such as errors in measurement and more precise compared to traditional assessment methods.
A Study on Roundabout Signal Metering Operation by Considering Entry Lane's Traffic Volume
Ahn, Woo-Young ;
International Journal of Highway Engineering, volume 14, issue 2, 2012, Pages 175~181
DOI : 10.7855/IJHE.2012.14.2.175
Under unsaturated capacity conditions with balanced approach flows, roundabout gives less delay and queue length than existing signalized intersections; however, over capacity conditions with unbalanced approach flows(flow above 450 pcu/h/lane), roundabouts efficiency drops due to the short gap between entering vehicles and circulating vehicles. This study provides a roundabout Signal Metering transfer standard and operation method. In this study, a four-way-approach with one-lane roundabout is selected to compare the Signal Metering performance for the case of unbalanced flow conditions. The performance is evaluated by using SIDRA software in terms of average delay and queue length. The result shows that the Signal Metering provides substantial improvements for the case of total approach flow is 1,800~2,000 pcu/h in which the main approach flow ratio is 60~70% gives 30~40% less delay and 30~60% less queue length than normal roundabout operation. Also, it is approved that operational performance saving can be achieved when the Metered Approach is selected adjoining to the main approach in pair.