scholarly journals Ekspertni pristup poboljšanju sigurnosti u zonama radova na cesti

Sigurnost ◽  
2018 ◽  
Vol 60 (3) ◽  
pp. 247-260
Author(s):  
Joso Vrkljan ◽  
Miljenko Mustapić ◽  
Antun Štimac
Keyword(s):  
Expert System ◽  
Expert Systems ◽  
Traffic Management ◽  
Work Zone ◽  
Road User ◽  
Special Focus ◽  
Road Maintenance ◽  
Work Zones ◽  
The Road ◽  
Road Work

SUMMARY: An ever-increasing volume of traffic on Croatian roads increases the volume of maintenance work. Road works negatively impact traffic mobility and road user safety, and also safety of the maintenance workers. Improving traffic mobility and safety is the key issue that all interested parties (planning and managing road works and those executing them) should address. Mitigation of negative effects is possible via certain expert system measures. Presented in the paper are the options provided by expert systems implemented in the road work zones as factors for improving road maintenance and safe traffic flow, as well as road workers safety. Introducing relevant data into the data base, an expert system is created providing the driver approaching a road work zone with a number of alternative routes. Also shown is a driving diagram for road work zones with special focus on slowing down speed upon entering the road work zone. The results show that the implementation of expert systems based on relevant data would significantly facilitate traffic management in road work zones and improve the safety of traffic and road workers, as well as the workers' efficacy.

PEMBOBOTAN PENILAIAN ASPEK KESELAMATAN DI ZONA KERJA PADA MASA PELAKSANAAN PROYEK PENINGKATAN JALAN

2017 ◽  
Vol 14 (1) ◽  
pp. 29
Author(s):  
Dewa Ketut Sudarsana ◽  
Mayun Nandiasa ◽  
Ida Bagus Made Artamana
Keyword(s):  
Road Safety ◽  
Warning Signs ◽  
Work Zone ◽  
Minimum Length ◽  
Work Zones ◽  
The Road ◽  
On The Road ◽  
Road Work ◽  
Hierarchy Process ◽  
Descriptive Method

Road safety is a topic that came out over the years and has now become a worldwideproblem. This can be picked up with the founding of the Decade of Action for Road Safety 2010-2020 by the United Nations. Efforts of prevention road safety during the implementation of roadimprovement has been specified in the path of contract execution. However, assessment of safetyaudits in the work zone on the road improvements has not been studied. Descriptive method used toidentify related attributes of safety in the work zone. Hierarchy and the weighting of each attribute isused the Analytical Hierarchy Process (AHP) method. The results obtained in, the weighting of the 4criteria division of work zones in sequence from the weight of greater are: the work zone; closerszone; initial taper zone and end taper zone by weight are: 59%; 27%; 9% and 6%. Weight rating ofalternative attributes for closers zone criteria is: road work warning signs: lane usage instructionssigns; closers zone distance; narrowing of lanes of the road warning signs and speed limit warningsigns, with their respective weights are: 46%; 23%; 15%; 11%; 5%. Weight rating attributesalternative to early taper zone criteria are: the installation of cone/guardrail; reflector at the initial ofthe work zone; minimum taper length requirement with respective weights: 53%; 30%; 17%.Assessment criteria attribute for the work zone are: minimum length of the work zone; the minimalwidth of the work zone; installation cone/guardrail; and the minimum distance between work zones,with respective weights: 70%; 15%; 9%; 6%. And the weight of attribute ratings for end zonecriteria is: the installation of cone/guardrail and followed with a minimum length end taperrequirements, with respective weights: 82%; 18%. Abstrak: Keselamatan Jalan merupakan isu yang mengemuka dari tahun ke tahun dan saat ini sudahmenjadi permasalahan global. Hal ini dapat dilihat dengan dicanangkannya Decade of Action forRoad Safety 2010-2020 oleh Perserikatan Bangsa Bangsa. Upaya pencegahan keselamatan dijalanselama masa pelaksanaan peningkatan jalan telah diatur dalam kontrak pelaksanaan jalan. Namuncara penilaian pemeriksaan keselamatan di jalan pada zona kerja pelaksanaan peningkatan jalanbelum diteliti. Metode deskriptif digunakan untuk mengidentifikasi atribut terkait aspek keselamatandi zona kerja pekerjaan jalan. Hirarki dan pembobotan penilaian masing masing atributmenggunakan metode Proses Hirarki Analitikal (PHA). Hasil rancangan pembobotan pada levelkreteria medapatkan 4 kreteria pembagian zona kerja secara teurut dari bobot kepentingan yanglebih besar adalah zona kerja; zona pendekat; zona taper awal dan zona taper akhir dengan bobotadalah 59%; 27%; 9% dan 6%. Bobot penilaian atribut alternative untuk kreteria zona pendekatadalah: rambu peringatan ada pekerjaan jalan; rambu petunjuk penggunaan lajur; jarak zonapendekat; rambu peringatan penyempitan lajur jalan dan rambu peringatan batas kecepatan, denganbobot masing-masing adalah: 46%; 23%; 15%; 11%; 5%. Bobot penilaian atribut alternative untukkreteria zona taper awal adalah: pemasangan kerucut/guardrail; pemasangan reflector padapertemuan taper awal dengan zona kerja; persyaratan panjang taper minimum dengan bobot masingmasing:53%; 30%; 17%. Penilaian atribut untuk kreteria zona kerja adalah: panjang zona kerjaminimum: lebar zona kerja minimum; pemasangan kerucut/guardrail; dan jarak antar zona kerjaminimum, dengan bobot masing-masing: 70%; 15%; 9%; 6%. Dan bobot penilaian atribut untukkreteria zona penjauh adalah: pemasangan kerucut/guardrail dan diikuti dengan persyaratanpanjang taper akhir minimum, dengan bobot masing-masing: 82%; 18%.Kata kunci: keselamtan, metode PHA, zona kerja, peningkatan jalan

scholarly journals Evaluation of Two Improved Schemes at Non-Aligned Intersections Affected by a Work Zone with an Entropy Method

2020 ◽  
Vol 12 (14) ◽  
pp. 5494
Author(s):  
Yang Shao ◽  
Zhongbin Luo ◽  
Huan Wu ◽  
Xueyan Han ◽  
Binghong Pan ◽  
...  
Keyword(s):  
Traffic Management ◽  
Control Strategies ◽  
Management Strategies ◽  
Entropy Method ◽  
Work Zone ◽  
Work Zones ◽  
Research Results ◽  
The Road ◽  
Traffic Operation ◽  
The Impact

The impact of work zones on traffic is a common problem encountered in traffic management. The reconstruction of roads is inevitable, and it is necessary and urgent to reduce the impact of the work zone on the operation of traffic. There are many existing research results on the influence of highway work zones, including management strategies, traffic flow control strategies, and various corresponding model theories. There are also many research results on the impacts of urban road and subway construction on traffic operation, including construction efficiency, economic impact, and travel matrix. However, there are few studies concerning the choice of work zone location, and most previous studies have assumed that the work zone choice was scientific and reasonable. Therefore, it is reasonable to choose the location of the work zone and to assess whether there is room for improvement in the road form of the work zone, but this remains a research gap. Therefore, we studied a seven-lane main road T-intersection in Xi’an, China, and investigated a work zone located at this intersection that caused a road offset, leading to the non-aligned flow of main traffic. We designed two road improvement schemes and multiple transition schemes, used VISSIM software to evaluate the traffic operation of the two schemes, and used the entropy method to choose the suitability of the two schemes under different conditions. According to the results, in the best case, the driving time, delay, and number of stops are reduced by 44%, 66%, and 92%.

scholarly journals Highway capacity in work zones – experiences in foreign conditions

2020 ◽  
Vol 66 (3) ◽  
pp. 49-58
Author(s):  
Stefan Andjelkovic ◽  
Vladan Tubić
Keyword(s):  
Traffic Management ◽  
Work Zone ◽  
Level Of Service ◽  
Work Zones ◽  
Highway Capacity ◽  
Traffic Demand ◽  
Traffic Conditions ◽  
Satisfactory Level ◽  
Road Capacity ◽  
Road Work

Traffic management in the highway work zones is a challenge for all traffic engineers. Road work zones are one of the most significant problems for the normal realization of traffic conditions, which can cause various consequences that will greatly reduce capacity and reduce the level of service. On the sections in the work zone, bottlenecks appear, which result in congestion, ie. lead to an imbalance of traffic demand and road capacity. This paper provides an overview of the literature and foreign experiences and ways of regulating traffic in the work zones on the highway. Bearing in mind that we are talking about roads of the highest rank, where are sections with work zones, it is necessary to maintain a satisfactory level of service by applying the concept of regulation that will minimally interfere the normal realization of traffic conditions.

Safety Models for Rural Freeway Work Zones

2000 ◽  
Vol 1715 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Shyam Venugopal ◽  
Andrzej Tarko
Keyword(s):  
Traffic Control ◽  
Traffic Management ◽  
Negative Binomial ◽  
Road Construction ◽  
Work Zone ◽  
Work Zones ◽  
Expected Number ◽  
Crash Data ◽  
Inappropriate Use ◽  
Road Work

Construction and maintenance work zones have traditionally been hazardous locations within the highway environment. Studies show that the accident rates during road construction are generally higher than during periods of regular traffic operations. The increase in the number of crashes may be attributed to ( a) general disruption to the flowing traffic due to sudden discontinuities caused by closed lanes, ( b) improper lane merging maneuvers, ( c) the presence of heavy construction equipment within the work area, ( d) inappropriate use of traffic control devices, and ( e) poor traffic management. Research was conducted to develop regression models predicting the expected number of crashes at work zones on rural, two-lane freeway segments. Crashes on approaches to work zones and those inside the work zones were analyzed separately. For developing these models, an extensive database was obtained, including freeway data, crash data, and work zone characteristics. Negative binomial models were developed with average daily traffic, the length of the work zones, and the duration of the work projects as exposure-to-risk variables. The cost of the various work projects was found to be a good substitute for some of the exposure-to-risk variables. The investigated variables included the number of on and off ramps, both on approaches and inside the work zones; the type of work; and the intensity of the road work involved. The models may be used to evaluate beforehand the expected number of crashes on the work zone, given the work zone characteristics.

Driver Behavior in Response to Flashing Lights

2019 ◽  
Vol 2673 (5) ◽  
pp. 703-708 ◽  
Author(s):  
Kristin Kersavage ◽  
Nicholas P. Skinner ◽  
John D. Bullough ◽  
Philip M. Garvey ◽  
Eric T. Donnell ◽  
...  
Keyword(s):  
Driver Behavior ◽  
Sequential Pattern ◽  
Work Zone ◽  
Lane Change ◽  
Work Zones ◽  
The Road ◽  
The Individual ◽  
The Right ◽  
Warning Lights ◽  
Current Standards

Flashing yellow warning lights notify drivers about the presence of work along the road. Current standards for these lights address performance of the individual light but not how lights should function when multiple lights are used. In the present study, warning lights were used to delineate a lane change taper in a simulated work zone. Lights flashed with varying intensities and either randomly or in sequence, with lights flashing in turn along the length of the lane change taper, either to the right or to the left. In half of the trials, a flashing police light bar was used on a vehicle located within the simulated work zone. Participants were asked to drive a vehicle approaching the work zone and to identify, as quickly as possible, in which direction the taper’s lane change was (either to the right or left). Drivers were able to correctly identify the taper from farther away when the lights flashed in a sequential pattern than when the flash pattern was random; and the presence of a police light bar resulted in shorter identification distances. The results, along with previous research, can inform standards for the use of flashing lights and police lights in work zones for the safety of drivers and workers.

scholarly journals Practical Road-Resistance Functions for Expressway Work Zones in Occupied Lane Conditions

2019 ◽  
Vol 11 (2) ◽  
pp. 382
Author(s):  
Chi Zhang ◽  
Jihan Qin ◽  
Min Zhang ◽  
Hong Zhang ◽  
Yudi Hou
Keyword(s):  
Traffic Safety ◽  
Goodness Of Fit ◽  
Traffic Volume ◽  
Work Zone ◽  
Traffic Load ◽  
Work Zones ◽  
Goodness Of Fit Test ◽  
The Road ◽  
Resistance Function ◽  
Critical Traffic

In order to create a practical road-resistance function for work zones under different lane occupation conditions, the expected speed of vehicles was calibrated in the work zone simulation model based on measured data, and simulation models were constructed for the closed half lane and the closed inside lane under different rates of trucks. Based on the statistical theory, the influence of significance of traffic volume and truck ratios for road resistance was analyzed, and a suitable truck ratio was found for the work zone. By using the optimal nonlinear fitting theory, the practical road-resistance function for work zones under different lane occupation conditions was constructed. The results showed that the road resistance is significantly affected by the traffic volume and rate of trucks. Under the same truck ratio, the road resistance linearly increases slowly when the traffic volume is less than the critical traffic volume and rapid increases irregularly when it is greater than the critical traffic volume. Under the same traffic load, the road resistance of the work zone increases with the increase in the rate of trucks, and the difference is not obvious when the traffic volume is less than the critical traffic volume, and increases gradually when it is greater than the critical traffic volume. Through the goodness of fit test and the homogeneity of variance test, the road-resistance function constructed in this paper has high goodness of fit. The practical road-resistance functions constructed in this study could be used to guide the diversion of the rebuilt/expanded highway to ensure traffic safety. Further, the study provides a theoretical basis for the construction of intelligent highway work zones.

Improving state policy in the field of safety and road maintenance in the constituent entities of the Russian Federation

2021 ◽  
Vol 23 (2) ◽  
pp. 39-45
Author(s):  
NIKITA OSOKIN ◽  
◽  
NIKITA POPOV ◽  
Keyword(s):  
Russian Federation ◽  
Road Transport ◽  
Transport Infrastructure ◽  
Infrastructure Development ◽  
Road Maintenance ◽  
Road Transportation ◽  
The Road ◽  
The Russian Federation ◽  
Road Work ◽  
Performance Based Contracts

The level of transport infrastructure development directly affects the rate of economic growth. In 2018, in Russia, 67.1 % of the total volume of transported goods were delivered by road transport. However, we cannot talk about the full realization of the road transportation system since 57.6 % of public roads do not meet regulatory requirements. The available statistics indicate that, first of all, attention should be paid to the condition of the roads. The article analyzes the system for road maintenance in the constituent entities of the Russian Federation, considers the main regulatory documents governing the activities of road work suppliers and executive authorities in the field of road maintenance. The article examines and analyzes the advanced foreign experience in the field of technologies for servicing roads in the winter. As the result of analysis, the authors propose introducing performance-based contracts into the field of the road sector. The creation of an economically feasible form of performance-based contracts can lead to a decrease in the cost of road maintenance by 10-40 %.

Work-zone traffic management with transportation planning software

1993 ◽  
Vol 20 (3) ◽  
pp. 471-479 ◽  
Author(s):  
M. Nazrul Islam ◽  
Prianka N. Seneviratne
Keyword(s):  
Transportation Planning ◽  
Traffic Management ◽  
Predictive Accuracy ◽  
Work Zone ◽  
Total Delay ◽  
Planning Software ◽  
Present Generation ◽  
Road Work ◽  
Alternate Routes ◽  
Management Alternatives

In this paper, the pros and cons of applying transportation planning software (TPS) in work-zone traffic management are investigated. The overall objective is to provide potential users, particularly small municipalities, with a basis for selecting the TPS best suited for evaluating traffic management alternatives for work zones. Four TPSs (TRANPLAN, MINUTP, SYSTEM II, and QRS II) were examined and rated with respect to eleven characteristics, SYSTEM II and QRS II, rated first and second, respectively, are used to assign traffic in a selected network. Alternate routes during road work are identified to minimize total delay and noise impact. The performance of the two TPSs is assessed in relation to predictive accuracy, post-processing requirements, and compatibility with other software. It is found that, while concerns about predictive accuracy and training needs can be overcome at a price, some special features are required within the present generation of TPS for them to be truly beneficial in the routine analysis of work-zone traffic plans. The significance of these features is discussed in reference to the assignment case study. Key words: traffic assignment, work zone, traffic management, planning, software, SYSTEM II, QRS II.

scholarly journals A WSN-Based Intrusion Alarm System to Improve Safety in Road Work Zones

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Jose Martin ◽  
Alba Rozas ◽  
Alvaro Araujo
Keyword(s):  
Traffic Accidents ◽  
Causes Of Death ◽  
Road Traffic ◽  
Work Zone ◽  
Alarm System ◽  
Work Zones ◽  
Communication Interface ◽  
Alarm Systems ◽  
Work Area ◽  
Road Work

Road traffic accidents are one of the main causes of death and disability worldwide. Workers responsible for maintaining and repairing roadways are especially prone to suffer these events, given their exceptional exposure to traffic. Since these actuations usually coexist with regular traffic, an errant driver can easily intrude the work area and provoke a collision. Some authors have proposed mechanisms aimed at detecting breaches in the work zone perimeter and alerting workers, which are collectively called intrusion alarm systems. However, they have several limitations and have not yet fulfilled the necessities of these scenarios. In this paper, we propose a new intrusion alarm system based on a Wireless Sensor Network (WSN). Our system is comprised of two main elements: vehicle detectors that form a virtual barrier and detect perimeter breaches by means of an ultrasonic beam and individual warning devices that transmit alerts to the workers. All these elements have a wireless communication interface and form a network that covers the whole work area. This network is in charge of transmitting and routing the alarms and coordinates the behavior of the system. We have tested our solution under real conditions with satisfactory results.

scholarly journals Influence Range and Traffic Risk Analysis of Moving Work Zones on Urban Roads

2021 ◽  
Vol 13 (8) ◽  
pp. 4196
Author(s):  
Song Fang ◽  
Jianxiao Ma
Keyword(s):  
Road Traffic ◽  
Scientific Basis ◽  
Traffic Volume ◽  
Work Zone ◽  
Work Zones ◽  
The Road ◽  
Urban Expressway ◽  
The Right ◽  
Operation And Management ◽  
Left Lane

There is a body of literature on the influence range and traffic risk of fixed work zones. However, relatively few studies have examined the effect of ubiquitous moving operating vehicles, such as road cleaners, on urban roads. The influence of low speed moving work zones on road traffic flow and traffic risk is still unclear. In this work, we used simulations to establish an urban expressway three lanes VISSIM model, and selected the road traffic volume and speed of the moving work zone as the independent variables. We analyzed the range of influence of the moving work zone on the rear vehicles in the left, middle and right lanes of the urban expressway and the traffic risk variation law caused by the moving work zone. The results show that the left lane was indirectly affected by the moving work zone when the traffic volume reached 2000 pcu/h. The influence of the moving work zone on the middle lane was controlled by the traffic volume and the speed of the moving work zone. Both the left and middle lanes were mainly impacted by vehicles changing lane from the right lane. Regardless of the traffic volume and the speed of the moving work zone change, the vehicles 200 m behind a moving work zone will be directly affected in the right lane. Furthermore, the average traffic risk is the highest within 50 m of the moving work zone in the right lane. When the traffic volume decreases and the speed of the moving work zone increases, the average traffic risk decreases gradually. These results provide a scientific basis for the operation and management of moving working vehicles on urban roads.

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