scholarly journals Analysis of the efficiency of traffic lights turning red in case of exceeding speed limit

2021 ◽  
Vol 41 (1) ◽  
pp. e86047
Author(s):  
Heriberto Pérez-Acebo ◽  
Xabier Otxoa-Muñoz ◽  
Mikel Marquina-Llaguno ◽  
Hernán Gonzalo-Orden
Keyword(s):  
Urban Area ◽  
Urban Areas ◽  
Red Light ◽  
Speed Limit ◽  
Rural Roads ◽  
Traffic Lights ◽  
Traffic Calming ◽  
And Behavior ◽  
The Village

Due to the presence of various traffic calming measures (TCM) and traffic lights in urban areas, the speed of vehicles is maintained low. Nevertheless, a problem arises in the frontier between urban and non-urban areas because drivers must adapt their speed and behavior to new conditions. This risk becomes even greater in rural roads that penetrate small villages without a bypass and with a short urban segment, since drivers do not normally speed down in these segments. Various measures can be installed, but traffic lights that turn red if the speed limit is exceeded is not usually considered as a TCM in the literature. Therefore, this paper aims to analyze the efficiency of traffic lights turning red in case of exceeding speed limit. The village of Ábalos in Spain was selected for this research, with an urban area of 630 m and this type of traffic lights in both directions. Results showed that drivers do not respect the speed limit - and hence, the red light - when they are placed separately. However, if they are placed next to a crosswalk, their effect is increased. Consequently, it is recommended to place these traffic lights with a crosswalk to reinforce the efficiency of both TCMs.

scholarly journals Evaluation of the Radar Speed Cameras and Panels Indicating the Vehicles’ Speed as Traffic Calming Measures (TCM) in Short Length Urban Areas Located along Rural Roads

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8146
Author(s):  
Heriberto Pérez-Acebo ◽  
Robert Ziolkowski ◽  
Hernán Gonzalo-Orden
Keyword(s):  
Urban Areas ◽  
Road Safety ◽  
Short Length ◽  
Short Segment ◽  
Rural Roads ◽  
The Road ◽  
Traffic Calming ◽  
Lower Effect ◽  
The Village ◽  
Positive Effect

Traffic calming measures (TCMs) are implemented in urban areas to reduce vehicles’ speed and, generally speaking, results are obtained. However, speed is still a problem in rural roads crossing small villages without a bypass and with short-length urban areas, since drivers do not normally reduce their speed for that short segment. Hence, various TCM can be installed. It is necessary to maintain a calm area in these short segments to improve road safety, especially for pedestrian aiming to cross the road, and to save combustible by avoiding a constant increase-decrease of speed. Four villages were selected to evaluate the efficiency of radar speed cameras and panels indicating vehicle’s speed. Results showed that the presence of radar speed cameras reduces the speed in the direction they can fine, but with a lower effect in the non-fining direction. Additionally, a positive effect was observed in the fining direction in other points, such as pedestrian crossings. Nevertheless, the effect does not last long and speed cameras may be considered as punctual measures. If the TCMs are placed far from the start of the village they are not respected. Hence, it is recommended to place them near the real start of the build-up area. Lastly, it was verified that longer urban areas make overall speed decrease. However, when drivers feel that they are arriving to the end of the urban area, due to the inexistence of buildings, they start speeding up.

scholarly journals Safety Level Of Pedestrian In Urban Area

2019 ◽  
Vol 24 (4) ◽  
pp. 335
Author(s):  
Prima Juanita Romadhona
Keyword(s):  
Urban Area ◽  
Urban Areas ◽  
Conflict Analysis ◽  
Speed Limit ◽  
Vehicle Speed ◽  
Residential Areas ◽  
Safety Level ◽  
Road Users ◽  
Road Sign ◽  
Traffic Conflict

There are other road users who have high rates involvement as victims of accidents, namely vulnerable road users such as pedestrians. The study concern to find out the safety level and facilities of pedestrians. This study takes place within official and residential areas with high pedestrians mobility. Furthermore, traffic conflict analysis used as the method to measure the safety level of pedestrians. From the survey results, urban areas especially in study case is not equipped with safety facilities for pedestrians such as pedestrians crossing, road sign, mark, speed limit for vehicles, and 70% serious traffic conflict lead to potential accident which involving pedestrians. The result proves low safety level for pedestrians in urban area. As the recommendation, land use and innovation in pedestrians safety facilities installation is needed such as combination of zebra cross, speed limit, sign, mark, and speed hump to reduce vehicle speed when approaching the crossing facilities.Keywords: pedestrians safety, traffic conflict analysis Terdapat pengguna jalan lain yang memiliki angka keterlibatan yang tinggi sebagai korban kecelakaan, yaitu pengguna non kendaraan bermotor seperti pejalan kaki. Kajian ini mengenai tingkat pelayanan keselamatan dan fasilitas bagi pejalan kaki. Kajian ini mengambil lokasi wilayah perkantoran dan wilayah pemukiman dengan mobilitas pedestrian yang tinggi. Selanjutnya, digunakan analisis konflik lalu lintas sebagai metode pengukuran tingkat keselamatan responden. Dari hasil survey, kawasan perkotaan dalam studi kasus tidak difasilitasi dengan fasilitas keselamatan bagi pejalan kaki yaitu tidak adanya batasan kecepatan bagi kendaraan bermotor serta tetjadinya 70% konflik serius yang mengarah kepada potensi kecelakaan selama jam pengamatan yang melibatkan pejalan kaki. Diperlukan penanganan bagi keselamatan pejalan kaki yaitu pemanfaatan tata guna lahan dan pemasangan fasilitas keselamatan seperti zebra cross, pembatasan kecepatan, rambu, marka, dan speed hump untuk mengurangi kecepatan kendaraan bermotor yang akan melewati fasilitas penyeberangan. Kata Kunci: keselamatan, pejalan kaki, analisis konflik lalu lintas

scholarly journals PERBEDAAN KEANEKARAGAMAN MAKROBENTOS SEBAGAI INDIKATOR BIOLOGI PENENTUAN KUALITAS AIR DI AREA PERKOTAAAN DAN DI PEDESAAAN LAMPUNG

BIOLOVA ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 144-150
Author(s):  
Teguh Santoso ◽  
Agus Sutanto
Keyword(s):  
Urban Area ◽  
Rural Areas ◽  
Urban Areas ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
The Village

This has not been known as a comparison of macrobentos diversity between rural and urban areas. Based on this, it is necessary to analyze the comparison of Macrobentos in the urban area with rural areas. The river which is in the analogues of urban areas is the river Way Belau (Bandar Lampung) and the river Well Putri (Bandar Lampung), while the river which is in the area of the river in the countryside is the Pasir Sakti (East Lampung) and the River Raman Pujodadi (Trimurjo). The purpose of this study is to compare the diversity of Macrobentos in urban areas with rural areap. The type of research in this article is descriptive. The conclusion of this study is that there is a difference in the diversity of macrobentos between rivers that exist in rural areas with rivers that exist in urban areas. The rivers in the village area nudge have more macro-bentos diversity compared to existing rivers in urban areas.

scholarly journals Density Controlled Traffic Lights System using Aurdino Mega 2560

2020 ◽  
Vol 9 (5) ◽  
pp. 392-394
Keyword(s):  
Traffic Control ◽  
Urban Areas ◽  
Red Light ◽  
Green Light ◽  
Fixed Time ◽  
Traffic Density ◽  
Traffic Light ◽  
Traffic Lights ◽  
Choice Making ◽  
Control Authority

We have proposed the enhancement of Traffic Light Controller utilizing ultrasonic sensor and microcontroller. The Paper is planned for structuring a thickness based dynamic traffic signal framework where the planning of signal will change consequently on detecting the traffic density at any road junction. Traffic jams are an extreme issue in many urban areas over the world and thusly the time has come to move progressively manual mode or fixed clock mode to a robotized framework with choice making abilities. Present day traffic control framework is fixed time based which may render wasteful on the off chance that one path is operational than the others. To solve this issue, we have made a structure for a clever traffic control system. Some of the time higher traffic density at one side of the intersection requires longer green light time when compared with standard green light time. We, consequently propose here a component where the time of green light and red light is allotted based on the thickness of the traffic present around then. This is accomplished by utilizing ultrasonic sensors which are available on Top of the street.Sometime, in specific intersection of the street junctions extended periods of Red Traffic Light. In instance of any vehicle in crisis circumstance or on the other hand in emergency like VVIPs,a SMS is send to Traffic Control Authority, who has the control of microcontroller empowers microcontroller to change traffic light green for specific time on need premise.

scholarly journals The Role of Customary Land Ownership in Land-Use Conversion in the Peri-urban of Bukittinggi, Indonesia

2019 ◽  
Vol 175 (4) ◽  
pp. 533-555
Author(s):  
Ira Safitri Darwin ◽  
Haryo Winarso ◽  
Denny Zulkaidi
Keyword(s):  
Land Use ◽  
Urban Area ◽  
Urban Areas ◽  
Land Use Regulations ◽  
West Sumatra ◽  
Formal Expansion ◽  
Administrative Area ◽  
Customary Land ◽  
The Village ◽  
The City

Abstract Taluak is located in the peri-urban area of the city of Bukittinggi, in Agam Regency, West Sumatra, Indonesia. Bukittinggi is rapidly expanding into this peri-urban area. Due to a lack of sound land-use regulations, the growing population and increasing development are encroaching into the peri-urban area. In 1999, the administrative area of Bukittinggi was formally expanded to include some of the surrounding land that had previously been part of Agam Regency. However, although the physical development of the city has encroached into parts of Agam Regency, including Taluak, the communities of the village refused to be administratively included in Bukittinggi. One of their reasons for this refusal is a belief that such urbanization will harm the culture and traditions of the village. This article aims to explain how the communities of Taluak have resisted the formal expansion of Bukittinggi to include them in order to maintain their culture and traditions of land management and to estimate how long such resistance can survive. The article also explains how the process of land conversion in Taluak is carried out, particularly the conversion from rural use into urban use, which creates rurban (rural-urban) areas.

PERAN MASYARAKAT TERHADAP PEMBAYARAN RETRIBUSI SAMPAH DI KOTA SAMARINDA

2018 ◽  
Vol 2 (1) ◽  
pp. 33
Author(s):  
Abd Rachim AF,
Keyword(s):  
Waste Management ◽  
Population Growth ◽  
Frequency Analysis ◽  
Urban Areas ◽  
Relative Frequency ◽  
Environmental Problems ◽  
Living Standards ◽  
The Public ◽  
And Behavior

One of the environmental problems in urban areas is the pollution caused by garbage. The waste problem is caused by various factors such as population growth, living standards changes, lifestyles and behavior, as well as how the waste management system. This study aims to determine how the role of society to levy payments garbage in Samarinda. This research was descriptive; where the data is collected then compiled, described and analyzed used relative frequency analysis. The participation of the public to pay a "levy junk", which stated to pay 96.67%, for each month and the rates stated society cheap, moderate and fairly, respectively 46.08%, 21.21%, 21.04%. Base on the data , the role of the community to pay "levy junk" quite high.

The Status of Livelihood Vulnerability and Its CopingCapacities of Urban Squatters in Kathmandu Metropolitan City, Nepal

Patan Pragya ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 19-32
Author(s):  
Chhabi Ram Baral
Keyword(s):  
Data Collection ◽  
Urban Area ◽  
Urban Areas ◽  
Quantitative Methods ◽  
Urban Poverty ◽  
Rural Poverty ◽  
Poor People ◽  
Qualitative And Quantitative ◽  
Qualitative And Quantitative Methods ◽  
The Status

Urban poverty is one of multidimensional issue in Nepal. Increasing immigration from the outer parts of Kathmandu due to rural poverty, unemployment and weak security of the lives and the properties are core causes pushing people into urban areas. In this context how squatter urban area people sustain their livelihoods is major concern. The objectives of the study are to find out livelihood assets and capacities squatters coping with their livelihood vulnerability in adverse situation. Both qualitative and quantitative methods are applied for data collection. It is found that squatters social security is weak, victimized by severe health problems earning is not regular with lack of physical facilities and overall livelihood is critical. This study helps to understand what the changes that have occurred in livelihood patterns and how poor people survive in urban area.

Perancangan Sistem Kontrol Lampu Lalulintas Cerdas Dengan Menggunakan Mikrokontroler dan Kamera

Jurnal MIPA ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 200
Author(s):  
Tjerie Pangemanan ◽  
Arnold Rondonuwu
Keyword(s):  
Real Time ◽  
Digital Image ◽  
Red Light ◽  
Green Light ◽  
Processing Method ◽  
Traffic Lights ◽  
Traffic System ◽  
Road Users ◽  
Adjustment System ◽  
System Time

Masalah lalu lintas  merupakan salah satu  masalah yang sangat sulit diatasi dengan hanya menggunakan system waktu (timer). Oleh sebab itu diperlukan suatu system pengaturan otomatis yang bersifat real-time sehingga waktu pengaturan lampu lalu lintas dapat disesuaikan dnegan keadaan di lapangan. Penelitian ini bertujuan mengembangkan suatu simulasi sistem yang mampu mengestimasi panjang antrian kendaraan menggunakan metoda pengolahan citra digital hanya dengan menggunakan satu kamera untuk dijadikan parameter masukan  dalam menghitung lama waktu nyala lampu merah dan lampu hijau. Oleh karena itu, sistem lalulintas sangatlah diperlukan, sebagai sarana dan prasarana untuk menjadikan lalulintas lancar, aman, bahkan sebagai media pembelajaran disiplin bagi masyarakat pengguna jalan raya. Penelitian ini penulis menggunakan sistem pengontrolan berbasis citra digital dimana camera sebagai sensor. Untuk aplikasi dari  semua metode dalam penelitian ini digunakan Microcontroller AurdinoTraffic problems is one of the problems that is very difficult to overcome by only using the system time (timer). Therefore we need an automatic real-time adjustment system so that the time settings for traffic lights can be adjusted according to the conditions on the ground. This study aims to develop a system simulation that is able to estimate the length of the vehicle queue using a digital image processing method using only one camera to be used as input parameters in calculating the length of time the red light and green light. Therefore, the traffic system is very necessary, as a means and infrastructure to make traffic smooth, safe, even as a medium for disciplined learning for road users. In this study the authors used a digital image-based control system where the camera as a sensor. For the application of all methods in this study, Aurdino Microcontroller is used

scholarly journals The Wood Quality of Small-Leaved Lime (Tilia cordata Mill.) Trees in an Urban Area: A Pilot Study

Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 420
Author(s):  
Benas Šilinskas ◽  
Aistė Povilaitienė ◽  
Gintautas Urbaitis ◽  
Marius Aleinikovas ◽  
Iveta Varnagirytė-Kabašinskienė
Keyword(s):  
Urban Area ◽  
Urban Areas ◽  
Wood Quality ◽  
Wood Products ◽  
Urban Trees ◽  
Measuring System ◽  
Forest Site ◽  
Tilia Cordata ◽  
Mean Values ◽  
Wood Development

This study performed a pilot evaluation of the wood quality—defined by a single parameter: dynamic modulus of elasticity (MOEdyn, N mm−2)—of small-leaved lime (Tilia cordata Mill.) trees in urban areas. A search of the literature revealed few studies which examined the specifics of tree wood development in urban areas. Little is known about the potential of wood from urban trees wood of their suitability for the timber industry. In this study, an acoustic velocity measuring system was used for wood quality assessment of small-leaved lime trees. The MOEdyn parameter was evaluated for small-leaved lime trees growing in two urban locations (along the streets, and in an urban park), with an additional sample of forest sites taken as the control. MOEdyn was also assessed for small-leaved lime trees visually assigned to different health classes. The obtained mean values of MOEdyn of 90–120-year old small-leaved lime trees in urban areas ranged between 2492.2 and 2715.8 N mm−2. For younger trees, the values of MOEdyn were lower in the urban areas than in the forest site. Otherwise, the results of the study showed that the small-leaved lime wood samples were of relatively good quality, even if the tree was classified as moderately damaged (which could cause a potential risk to the community). Two alternatives for urban tree management can be envisaged: (1) old trees could be left to grow to maintain the sustainability of an urban area until their natural death, or (2) the wood from selected moderately damaged trees could be used to create wood products, ensuring long-term carbon retention.

scholarly journals Semantic segmentation of PolSAR image data using advanced deep learning model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rajat Garg ◽  
Anil Kumar ◽  
Nikunj Bansal ◽  
Manish Prateek ◽  
Shashi Kumar
Keyword(s):  
Machine Learning ◽  
Remote Sensing ◽  
Deep Learning ◽  
Urban Area ◽  
Urban Areas ◽  
Learning Algorithms ◽  
Semantic Segmentation ◽  
Learning Model ◽  
Machine Learning Algorithms ◽  
Deep Learning Model

AbstractUrban area mapping is an important application of remote sensing which aims at both estimation and change in land cover under the urban area. A major challenge being faced while analyzing Synthetic Aperture Radar (SAR) based remote sensing data is that there is a lot of similarity between highly vegetated urban areas and oriented urban targets with that of actual vegetation. This similarity between some urban areas and vegetation leads to misclassification of the urban area into forest cover. The present work is a precursor study for the dual-frequency L and S-band NASA-ISRO Synthetic Aperture Radar (NISAR) mission and aims at minimizing the misclassification of such highly vegetated and oriented urban targets into vegetation class with the help of deep learning. In this study, three machine learning algorithms Random Forest (RF), K-Nearest Neighbour (KNN), and Support Vector Machine (SVM) have been implemented along with a deep learning model DeepLabv3+ for semantic segmentation of Polarimetric SAR (PolSAR) data. It is a general perception that a large dataset is required for the successful implementation of any deep learning model but in the field of SAR based remote sensing, a major issue is the unavailability of a large benchmark labeled dataset for the implementation of deep learning algorithms from scratch. In current work, it has been shown that a pre-trained deep learning model DeepLabv3+ outperforms the machine learning algorithms for land use and land cover (LULC) classification task even with a small dataset using transfer learning. The highest pixel accuracy of 87.78% and overall pixel accuracy of 85.65% have been achieved with DeepLabv3+ and Random Forest performs best among the machine learning algorithms with overall pixel accuracy of 77.91% while SVM and KNN trail with an overall accuracy of 77.01% and 76.47% respectively. The highest precision of 0.9228 is recorded for the urban class for semantic segmentation task with DeepLabv3+ while machine learning algorithms SVM and RF gave comparable results with a precision of 0.8977 and 0.8958 respectively.

Sign in / Sign up

Export Citation Format

Share Document