Traffic lights have a vital role as regulatory systems to control the vehicles flowed in urban networks. This research is based on the real case. The traffic lights are installed at a massive intersection of an urban network consisting of four sections. The systems control implements the modification of the Norwegian traffic lights states. The behavior of traffic lights states were modeled using Petri net method. For the model verification and validation, the invariants and simulation were applied. The purpose of the implementation of this control system was to reduce travel delays. The intersection performance level was good while the average travel delay on all sections was low. The method used for the testing was the comparison of the simulation results due to the settings that apply the standard system to the imitation of the reality of the system using modifications of the Norwegian traffic lights states. The control system was able to reduce the travel delays slightly. The average of Level of Service (LoS) index of the roads for all sections was at level D. It improved the performance of the intersection, but not yet significant. In addition to setting traffic lights, the presence of flyovers is urgent to improve travel delays.
Mathematical modeling assumes that the vehicle’s volume has a uniform pattern. Due to traffic lightssettings, the number of vehicles queue grows linearly. The reality, the stochastic arrivals of the vehiclescould be (1) in the randomized arrivals, (2) in the form of groups/ platoon, or (3) in the mixed arrivals. Itis observed that the arrival of the vehicles in the queue tends to have a normal pattern. The objective ofthis research is to study the implications of the arrival categories to the travel delay. For simulation, ituses the numerical method referring to the real state. The result indicates that the calculations of thetravel delay become precise for all vehicles.
Kerik Village, Takeran District, Magetan Regency, part of the community, work as red chilli farmers. Farmers experience some difficulties in red chilli cultivation because farmers still have little experience in red chilli cultivation. The farmers cannot know the types of diseases and pests and the symptoms that hit chilli plants that can reduce the productivity of chilli plants and can even cause crop failure. In addition, farmers also do not have experience handling it when they encounter problems that hit chilli plants that are being cultivated. To assist farmers in overcoming these problems, a web-based decision support system was built using the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method. The decision support system was created and designed using the Waterfall method and tested using the Blackbox Testing system testing method. With this decision support system, it is hoped that it will help farmers in Kerik Village diagnose diseases of the red chilli plants they cultivate. The test results from the Decision Support System for Diagnosing Red Chili Plant Diseases Using the Web-Based TOPSIS Method got the results as expected with the Blackbox Testing test, which brought the results of the percentage of system success of 100%.
Artikel ini berisi tentang kepadatan lalulintas pada persimpangan jalan yang bersinyal. Pada salah satu lengan jalannya terdapat jalur kereta api. Level of service (LoS) dari simpangan bersinyal terhadap lampu lalulintas normal berada pada level D. Hal tersebut menunjukkan ada kemacetan di selatan dan utara lengan persimpangan setelah palang pintu kereta api diturunkan. Level of service (LoS) ketika kondisi tersebut terjadi menurun ke level F. Permasalahan ini akan diselesaiakan dengan simulasi dalam hal ini menggunakan model graph dimana akan dibuat sebuah fly over baru yang melintasi persimpangan dan jalur kereta api. fly over digunakan untuk semua jenis kendaraan kecuali bukan kendaraan bermotor (UM). Level of service (LoS) kemudian naik ke level C dan ke level D setelah palang pintu kereta api diturunkan.
The purpose of this research is to build the proper travel schedule of traffic flow at a signalized intersection that has a special barrier. There exists a train track on one arm. The closure of the railway gate is longer than the duration of a cycle of traffic lights which causes congestion. This research uses graphs representation 146 Tomi Tristono method. It is based on the reason that a directed of the planar graph can devote conflict-free of the traffic flow in the urban network. The result is a graph model traffic flow and a proper time travel schedule. The benefits can be used by relevant agencies as basic of vehicle traffic regulation especially while the railway gate closing and after the train crossing completely.
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