Surrounding Road Network Research Articles

Road performance analysis due to Sayung Industrial Park development

This study aims to analyze the impact of Sayung Industrial Park development to the surrounding road network. The study merely relies on available secondary data, including recent transport study in Semarang Raya, trip rate, and previous research related on industrial area occupancy growth. Road performance in the terms of degree of saturation and travel speed are analyzed using a simplified four-step model using CUBE software. The results show that in 2023, assuming 50% occupancy of the industrial park, the average travel speed decreases by 8.5% and the average degree of saturation increases by 18.7%. While in 2030, assuming 100% occupancy, the road performance is worsened, the average travel speed decreases by 46.4% and the average degree of saturation increases by 45.5%. A new additional lane in each direction on Semarang–Demak main corridor is simulated to anticipate the full operational of Sayung Industrial Park in the future. The result shows an improvement on road performance.

Research on the construction of passenger travel chain based on utility

Large-scale integrated passenger transportation hubs are places where multiple modes of transportation are used to switch within the city, and they are also the convergence points of traffic inside and outside the city, and it is important to ensure their smooth under different traffic conditions. Firstly, the passenger travel utility in hubs model and transportation system utility model are proposed; then the travel demands of various types of passengers are accurately identified based on data mining and user portrait technology when the passenger volume is low, and the typical user priority filtering recommendation algorithm and information dynamic update strategy are proposed with the goal of optimal passenger travel utility; then for the large passenger volume scenario, the optimal transportation system operation utility is the goal for us, as the passenger volume increases continuously, the transportation system service is close to the critical state, a bi-level optimization model is established to avoid the resonance of the transportation system and guarantee the balance of optimal utility between the passenger side and the transportation system side. After the internal test of ‘Smooth Hongqiao’ APP, the travel time of passengers in the hub reduced by 5.6%, the utility value of the travel chain increased by 16%, and the saturation of the surrounding road network reduced by 5.7% after the above methods are flexibly applied to build the passenger travel chain according to different traffic scenarios.

Analysis Study of Oriented Area Development Plan in Sukaresmi Area (Case Study: Sukaresmi Bogor, West Java Province)

Several cities in Indonesia have implemented a Transit Oriented Zone system in integrating a sustainable transportation system, the area at the Sukaresmi point has become one of the areas developed with the Transit Oriented Development (TOD) concept in the Presidential Regulation of the Republic of Indonesia Number 55 of 2018 concerning the Plan Main Transportation Jakarta, Bogor, Depok Tangerang and Bekasi in 2018-2029. The development of this area will generate new movements in the surrounding road network. Of course, it will have a negative impact on the surrounding traffic. The negative impacts include an increase in the volume of traffic flow which can cause congestion, pollution, accidents, and other things that cannot be avoided on roads in the area where there is no traffic management arrangement around the area, it is necessary to conduct a study on traffic impact analysis. and analysis of generation and pull, the performance of roads in the operation stage in 2024, the development of the sukaresmi area has a total of 37.316 m2. With traffic engineering to minimize congestion due to area development plans. From the analysis result, the basic building coefficient is 70%, the building floor coefficient is 4.98. In the existing conditions, the highway has a saturation level of > 1. The generation and pull that occurs is 1240 cur / hour. Whereas the operation stage, the road saturation level becomes> 1.Recommendations given are the provision of safe public transportation facilities, realizing the importance of road traffic and road transportation and a study of land ownership around the Sukaresmi-oriented development plan is needed.

Ellipse-Like Radiation Range Grading Method of Traffic Accident Influence on Mountain Highways

To improve the efficiency of accident treatment on mountain highways and reduce the degree of disruption from traffic accidents, the grading method of the ellipse-like radiation range of traffic accident impact is proposed. First, according to the propagation law of traffic accidents, the general function of mountain highways affected by traffic accidents was constructed based on the Gaussian plume model. Then, based on the gravity field theory, the influence of the accident source point on the accident road was analyzed in the aftermath of a supposed accident. Additionally, considering the cascading failure of the road network, the influence of the accident-intersecting roads was demarcated by the cascading failure load propagation function. Based on this analysis, the ellipse-like radiation range models of traffic accidents on the accident road and the intersecting roads were proposed, respectively. Next, the adjustment parameter was further introduced to incorporate the different levels of influence of traffic accidents on the surrounding road network into the model, and the grading impacts of the accident on the potentially utilized opposite lane were discussed. Finally, according to the queuing theory model, simulation design, and portability analysis, the accuracy of the ellipse-like radiation range grading model was verified. The research results show that, compared with queuing theory and simulation results, the error of the grading model of the ellipse-like radiation range affected by traffic accidents was within a reasonable range; that is, the model can reasonably quantify the difference of traffic accident propagation on the accident road and the intersecting roads. Moreover, the heterogeneity of traffic accident propagation was verified by taking the non-occupied opposite lanes as an example. The grading method of influence radiation range utilized for traffic accidents on mountain highways can quickly provide corresponding auxiliary decision support for accident rescue within varying influence ranges.

Using GIS for Measuring Transit Stop Accessibility Considering Actual Pedestrian Road Network

Bus stops attain their importance to the transit service from being the main points of contact between the passenger and the bus. Considering spatial attributes, both the location and the spacing of bus stops significantly affect transit service performance and passenger satisfaction, as they influence travel time in addition to their role in ensuring reasonable accessibility. Knowing that every transit trip begins and ends with pedestrian travel, access to a bus stop is considered a critical factor for assessing the accessibility of the stop location. In this research, transit stop access coverage is estimated based on the actual pedestrian road network surrounding the stop. Accordingly, new indices are developed to assess a bus stop location on a more spatial basis. These indices measure the accessibility of a bus stop through the surrounding road network in addition to the ratio of actual access coverage to the ideal access coverage of a stop.

Analysis of Route Choice During Planned and Unplanned Road Closures

The Federal Highway Administration (FHWA) Alternate Route Handbook proposes guidance to identify alternate routes during planned and unplanned road closures. A challenge with this process is the lack of traffic data available to decision-makers. High volume corridors experiencing unplanned closures can provide a rich case history by systematically collecting connected vehicle (CV) data during such incidents. CV data provide the ability to directly measure actual diversion routes and travel times during an ongoing or historical incident. This paper presents methodologies to systematically analyze diversion data to identify the most common alternate route choices and impacted interstate exits, valuable information for public safety and transportation agencies to evaluate the surrounding road network’s resiliency in accommodating diverting traffic. Agencies can use this information to proactively deploy resources (officers, signs, barricades) at critical locations during future closures. The scalability of this methodology is demonstrated by evaluating 12 additional cases to assess diversion rates found to be in the range of 58% to 93% for total closures exceeding five hours. The paper concludes by recommending agencies apply these methodologies to develop data-driven diversion strategies on critical routes coupled with real-time CV monitoring in dispatch centers to provide agile adjustment of resources along diversion routes.

ANALYSIS OF DELAY ENTRY AND PLANNING OF PARKING GATES QMALL BANJARBARU

Qmall Banjarbaru is located at Jalan Ahmad Yani KM. 37. The existence of Qmall Banjarbaru caused the impact of increased traffic density and decreased speed in the surrounding road network. With the increasing movements that occur from Qmall Banjarbaru, it will potentially be the cause of congestion between vehicles that will enter the Qmall Banjarbaru with vehicles moving straight on Jalan Ahmad Yani KM. 37. The purpose of this research is to know the influence of delay entrance parking Qmall Banjarbaru against the performance of Jalan Ahmad Yani KM. 37.This research conducted a field survey that aims to find volume data on the road, the time of parking door service, the number of vehicles that enter the parking, the time delay the parking door, and the length of the delay that occurs on the parking door. From the results of data analysis using the Calculation of field survey (realistic) data obtained the distance of the parking door previously 16.5 meters to be redated to 25 meters and the parking door that originally had two doors of parking service made into three doors parking service. This change was made to delay enter parking Qmall Banjarbaru does not reach Jalan Ahmad Yani Km. 37.

A geographic routing protocol based on trunk line in VANETs

A Trunk Line Based Geographic Routing(TLBGR) protocol in Vehicular Ad-hoc Networks (VANETs) is proposed in this paper to solve the problem of data acquisition in the traditional trunk coordinated control system. Because of the characteristics of short communication time and high packet loss among vehicles, the vehicles entering the trunk lines can not transmit their information to the trunk coordinated control system stably. To resolve this problem, the proposed protocol uses the trunk lines’ traffic flow and the surrounding road network to provide a real-time data transmission routing scheme. It takes into account the data congestion problem caused by the large traffic flow of the main roads, which leads to the corresponding increase of the information flow of the section and the package loss, and the link partition problem caused by the insufficient traffic flow, which makes the vehicles have to carry and relay information thus increasing the transmission delay. The proposed TLBGR protocol can be divided into two stages: the next-intersection selection, and the next-hop selection in the chosen path between the current and next intersections. Simulation results show that, compared with other IoT routing protocols including Greedy Perimeter Stateless Routing (GPSR), Ad-hoc On Demand Vector (AODV), and Q-AODV, the TLBGR protocol has better performance in aspects of end-to-end delay, delivery rate, and routing cost under the scenario of urban traffic trunk lines. The TLBGR protocol can effectively avoid data congestion and local optimum problems, increase the delivery rate of data packets, and is therefore suitable for the routing requirements in this application scenario.

Traffic Influence Degree of Urban Traffic Accident Based on Speed Ratio

The analysis of traffic influence degree of urban traffic accident has a significant and real-world importance for estimating traffic emergency grades and adopting corresponding countermeasures. In this paper, analogized with water wave ripple theory, the ratio of speed before-to after-accident was proposed as the traffic impact coefficient to evaluate the traffic influence of an accident. In this paper, we limited the study to a certain type of traffic accident and established a standard theoretical model of the traffic impact coefficient. Thirty-five traffic accidents were sorted by using MATLAB, and the variable control method based on data filtering was adopted. According to the variations of different traffic accident characteristics and considering the differences in remaining road capacity after the accident, the modified factor of each accident was obtained by calculating the lane utilization factor of urban roads. The traffic influence degree value was calculated via double integral, which was used to evaluate the comprehensive traffic impact of the accident on the surrounding road network. Finally, the comprehensive traffic influence value was calculated by using the established standard model and the model built according to simulation data on the basis of a VISSIM simulation of an assumed accident. Results show that the comprehensive traffic influence values of the two methods were 0.666 and 0.648. The error of the two values was 3.8%, which shows the feasibility of the established evaluation model for traffic impact of accidents. The result shows that the proposed model proposed in this paper can be used by traffic management departments to quickly respond to accidents.

A Hybrid model for locating new emergency facilities to improve the coverage of the road crashes

We propose an emergency facility-locating model aimed at increasing the coverage of emergency demand throughout the city. The proposed model takes into account the status and location of the emergency facilities in the network and identifies locations suitable for the construction of new facilities. Here, Data Envelopment Analysis (DEA) and Maximum Coverage Location Problem (MCLP) have been combined in a single model. To do so, design problem and evaluation problem are considered concurrently to maximize the efficiency of services provided by emergency facilities across the city in response to the demand. Moreover, the total emergency demand in each district was considered in relation to the population density, the fatal, injurious, and property damage only (PDO) crashes. The coverage area of each emergency facility was assumed to be proportional to the average ambulance speed in the surrounding road network during rush hours. The available budget was included in the model to let the model function under various fiscal conditions. Model input variables consisted of average number of mortalities, injuries and PDO crashes as well as the population density of each urban district. The output variables of the model included the coverage share of proposed emergency centers and hospitals equipped with ambulances. The model was tested on the network of Tehran (Iran). It is recommended to add the location of some emergency centers and hospitals to the network. Moreover, the results showed that ten urban districts had efficiency problem in provision of emergency services.

Non-native plant cover and functional trait composition of urban temperate grasslands in relation to local- and landscape-scale road density

Globally, many natural grasslands are becoming increasingly urbanised, with non-native plants invading as local and regional environmental attributes are altered. Using multiple linear regression models, we examined the functional trait composition of non-native plants in 69 native urban grasslands in Melbourne, Australia, against the spatial attributes of remnant patches and the surrounding road network at multiple spatial scales. We predicted that (1) urbanisation favours non-native plants with evolved characteristics conferring resistance to urban environments, (2) high road density in the immediate vicinity of remnants drives high non-native functional diversity, and (3) non-native plants that spread and become abundant do so through an investment in competitive traits. Non-native plants contributed to 31% of total grassland cover, with regionally widespread species dominant within sites. Non-native perennial grass cover, rather than annual grass cover, was positively associated with road density across the urban landscape, and community-weighted Specific Leaf Area was negatively associated with road density. At local scales, non-native plant functional diversity was positively associated with road density in the immediate vicinity of grasslands. Urbanisation favoured non-native plants invested in persistence over resource acquisition, potentially in response to the urban climate and declines in fire frequency. Re-introducing historic fire regimes may therefore have the potential to be a key strategy in reducing competition from non-native plants. High non-native functional diversity in areas of high local road density was the expected response to high propagule pressure. Urban planning that protects grasslands from road encroachment may therefore reduce invasion.

A Traffic Management Scheme to ease Vehicle & Pedestrian Movements in the Kottawa Town

Among the suburban towns in Sri Lanka Kottawa can be considered as one that regularly faces many traffic related problems. It is observed that most of those who enter the town, face problems daily. In the case of drivers, their time is often wasted due to traffic congestion and in the case of pedestrians their safety is at risk due to the absence of a good traffic management system. Kottawa experiences severe traffic congestion because many motorists and pedestrians fail to follow the prevalent rules and because there is no proper traffic management scheme. There are three junctions in the town. Most of the motorists have to travel at least through two of these junctions. Therefore it could be seen that a considerable amount of vehicles frequently travel across the three junctions during peak hours. Southern Expressway users too travel through the Kottawa town since Makumbura interchange is situated next to Kottawa. At present, it is seen that most motorists including those who use the Southern Expressway waste their time at the Kottawa town. Stage 1of the Outer Circular Highway is now in operation and the other two stages will also be commissioned soon. Since they too will be starting from the Makumbura interchange, traffic in the town will increase further. At the time of this study in early 2014, there were many illegal constructions and there were street vendors conducting their daily businesses by the roadsides. These activities have reduced the capacity of the surrounding road network. The situation at Kottawa is further worsened due to roadside parking, the large numbers of pedestrian crossings provided in the Colombo-Awissawella (A4) Road and the existence of two unplanned bus parking locations at both sides of the A4 Road. In order to find solutions to these problems, the capacities of the roads were evaluated by compiling data related to vehicular flow, pedestrian movements and other supportive information of that area as at present and for the year 2034 (i.e. 20 years from now). From the data analysis, suitable solutions to improve the pedestrian and vehicle movements and vehicle parking facilities in the Kottawa town along with measures to improve safety are provided. Finally a suitable layout plan was introduced for the study area.

Evaluation of Traffic Organization Scheme during the Construction of Urban Subway Station Based on TransCAD

Urban subway station construction has a direct influence on the surrounding road network, so the traffic organization scheme needs be optimized according to construction process. For accurately simulating the traffic conditions when the station to be constructed, the OD trip matrix from OD matrix estimation was distributed on different road network by using TransCAD. The traffic organization scheme would be more scientific and reasonable by multiple traffic organization scheme compared selected evaluation, which the service level of roads and intersections as the main evaluation indicators. The results show that traffic organization scheme obtained by this method can greatly reduce the traffic influence on the surrounding road network during construction.

Problems and Suggestions on Dike Road Designs

Dike roads include water conservancy projects and highways or public works, so the industry cross exists in designs. During the process of dike road designs, there exists problems such as disjointed dike designs and road designs, the lack of adaptation classification system and design standards, inconsistent requirements of embankment compaction and subgrade compaction, the lack of a connection with the inner road network design and green landscape design and other issues. We should fully consider the differences between dike design and road design, according to the particularity of the road dike, and we have proposed several proposals, such as increasing related indicators in the early design of the dike road design, establishing the dike road classification system, uniforming embankments and subgrade compaction standards, strengthening connections with the surrounding road network design and paying attention to greening landscape designs.

Traffic Impact Simulation for Road Construction Project

With the increasing traffic contradiction between supply and demand, urban traffic problems have become quite complex. Reasons for traffic congestion have become much more diverse. During the construction of urban road project, the surrounding road network will encounter a huge impact, traffic problems therefore emerged. Simulation is an important means for transport impact assessment, which has an important role for construction traffic impact analysis. Accordingly, traffic simulation is particularly important for policy setting and traffic organization. Taking an improvement project of Changjiang rapid road in Zhongshan city for example, this paper used the professional simulation software Vissim to analysis the impact of Qiwan road during the construction project. The simulation and traffic evaluation results can give some forward-looking and targeted measures about traffic safety, traffic organization, road facilities alteration and so on. The traffic impact analysis results shown that traffic safety and high-efficiency transport system must protected by good traffic re-organization projects and the simulation method is an effective mean to actualize traffic impact assessment. DOI: http://dx.doi.org/10.11591/telkomnika.v10i8.1657

Traffic Impact Analysis of Road Construction Based on Vissim

During the construction of urban road project, the surrounding road network will encounter a huge impact, traffic problems therefore emerged. Accordingly, traffic impact analysis is particularly important for policy setting. Taking the rapid improvement project of Changjiang road in Zhongshan city for example, this paper used a simulation software Vissim to analysis the impact of Bay road during the construction project. Evaluation results can give some forward-looking, targeted traffic organization, facilities and other improvements measures.

Using parking pricing as a travel demand management tool at a university campus: an example for Istanbul Technical University

This study investigates the potential effects of parking pricing on the private vehicle use of residents of the campuses of large compounds such as universities. For this purpose, a parking pricing model is estimated for the academicians working at the Ayazaga Campus of Istanbul Technical University. Similar to many campus areas, the major problems of this campus are the insufficiency of parking supply and the campus's contribution to the congestion on the surrounding road network. The study combines revealed and stated preference data obtained from a questionnaire, estimates a mode choice model in order to explore responses to different parking pricing scenarios and execute willingness-to-pay analysis. The analyses show that significant switches to mass transit modes can be sustained if parking pricing is introduced.

Measuring Transit Accessibility Potential: A Corridor Case Study

Buses are the most widely used and essential component of a public transit system and the selection of a bus route are very important as it affects the overall performance of the system and its efficiency. Moreover the bus routes and bus stop locations are very important criteria for selection of this mode of transport by commuters. Bus stops attain their importance to the transit service as they are the main points of contact between the passenger and the bus. Considering spatial attributes, both the location and the spacing of bus routes and bus stops significantly affect transit service performance and passenger satisfaction, as they influence travel time in addition to their role in ensuring reasonable accessibility. Knowing that every transit trip begins and ends with pedestrian travel, access to a bus stop is considered a critical factor for assessing the accessibility of the stop location. In this paper, on the basis of the actual population surrounding the stop, the potential of a particular bus route / corridor is estimated for a particular corridor so as to assess a bus route / corridor on a more spatial basis. This potential measures the efficiency of a bus route / corridor through the surrounding road network, which can be used to compare the performance / efficiency of two or more routes / corridors in a system and also o ways to improve the performance of a particular route by increasing number of bus stops or changing their locations. I. INTRODUCTION Public transportation is a key component of a sustainable transportation system that improves mobility without placing economic and environmental burden of increased auto ownership on the travelling population. Due to lack of public transport facilities, significant growth in personalized vehicle population and considerable reduction in city bus transportation is observed. Most of the metropolitan cities lack proper accessibility to public transport. Transport and land use planning have a significant role in promoting accessibility, and at the same time accessibility is becoming increasingly important in making sound and sustainable land use and transport decisions. Therefore, t is important to develop models that are able to measure accessibility to public transport networks.

Impact on Existing Transport Systems by Generated Traffic due to New Developments

Impact of future traffic generated due to a development activity was forecasted on available information at the time, for a proposed building complex in Colombo taking it as a study sample. Through this study a complete pre-assessment of ‘in-coming’ and ‘out-going’ vehicles which generates due to the proposed development was conducted before hand, and observed how it would affect the surrounding road network in future. Then it was also observed that, whether the impact was within, or outside the tolerable limits. Once the proposed development was completed, and after few years of its operation, a validation was carried-out to assess the findings of the initial study which was conducted at the proposal stage of the development. The validation study results confirmed that the traffic generated due to the development was within tolerable limits of the surrounding road network as indicated in the initial study; hence the initial predictions were valid. Study also highlights the importance of development of local norms for traffic generating factors for different types of developments.

On-The-Fly Location Referencing Methods for Establishing Traffic Information Services

The paper presents different use cases for location referencing. It shows how a full service chain for traffic information services could be established and gave an overview of the widely used method traffic message channel (TMC). After a discussion about the growing requirements of telematics systems, a new approach to location referencing is presented: the on-the-fly methods. The difficulties regarding the development of on-the-fly methods was discussed and present the AGORA-C method which is currently in the standardisation process. An overview of the publicised test results using the AGORA-C method concerning its reliability and applicability was given. In addition, another algorithm for location referencing, MEI-LIN, was presented which focuses on a better identification of a location using topological information of the surrounding road network. An outlook on the current research in Europe shows the main future tasks of establishing location referencing methods