Engineering Commons^™

Estimation Of The Service Life Of Span Structures In Predicting The Durability Of Reinforced Concrete Bridges, Sh.B. Akhmedov, Kh. Almenov, Sh.Sh. Shojalilov, Sh.Sh. Safarov

The Scientific Journal of Vehicles and Roads

In recent years, on the roads of Uzbekistan and other countries, there has been a dangerous increase in various damages in the operated superstructures, caused by an increase in the service life and traffic intensity of vehicles and cargo tension.

Indicators Of Determining The Productivity Of Motor Graders Under Natural Conditions, N.R. Aslonov, S.S. Yusubjonov, S.M. Mirkholiqov

The Scientific Journal of Vehicles and Roads

In the article, Motor Graders are self-propelled machines that level and shape the ground, and their equipment consists of a fully rotating blade overturner, located between the rear and front bridges of the pneumatic wheel drive.

Evaluation Of Reliability Indicators Of A Transformer Angular Displacement Transducer, S.F. Amirov, M.S. Yakubov, N.R. Yuldashev

The Scientific Journal of Vehicles and Roads

Based on the analysis of statistical data on the state of transformer angular displacement transducers, the following calculations of probabilistic reliability indicators were performed: failure rate, mean time to failure; the probability of failure-free operation with a sufficiently long operation and gamma-percentage resource; confidence upper and lower bounds are determined, under the chosen conditions of significance, the calculated values ​​satisfy Pearson's χ^2 criterion and therefore do not contradict the experimental data. By analyzing the selected levels of significance, the existence of exponential and normal laws in the laws of probability distribution was revealed.

Warranty And Post-Warranty Service For Vehicles, U.A. Nurullayev, D.M. Zukhurova

The Scientific Journal of Vehicles and Roads

This article examines the characteristics of warranty and post-warranty service, the specifics of the work to identify problems and take into account the prospects of warranty and post-warranty service development, and compares warranty and post-warranty service before and after equipment purchase.

Processing Of The Results Of Comparisons Of Verification Installations Of The Same Level Of Accuracy, A. Abdukayumov

The Scientific Journal of Vehicles and Roads

Methods of processing the results of comparisons of verification installations of the same level of accuracy on the example of frequency and time standards are considered. A comparative analysis of the methods used to compare the verification installations is performed. The conditions for confirming the metrological status (metrological characteristics) of the verification installations are noted. The method of comparison of verification installations of the same level of accuracy is proposed. The results of the study of the pairwise comparison of frequency and time standards, the difference of the arithmetic mean readings, estimates of the total variance, the arithmetic mean readings …

Method Of Determination Of Characteristics Of Crushed Rocks, B.Yе. Kosymbetov

The Scientific Journal of Vehicles and Roads

The article describes the properties of heat resistance and frost resistance of a cone crusher when crushing rocks, and it is established that the transported stones have an abrasive effect on the cone crusher during crushing. Efficiency, of the crushing chamber, the composition of stones in the deposit, the percentage of their correct use of crushing power during construction work. The abrasive wear of the working bodies of the conical crushers was revealed.

Evaluation Of The Efficiency Of Vehicles And Refrigeration Equipment Transporting Perishable Goods, Q.U. Urinbayev

The Scientific Journal of Vehicles and Roads

Today, the volume of exports and imports is growing, and the demand for food is growing as the world's population grows. Further improvement of the rules of transportation of goods by road, as well as improving the safety of transportation of perishable products is a very important issue. One of the vehicles designed to transport perishable goods in road transport is a refrigerator. Selecting the thickness of the panels for the refrigerator compartment of the refrigerator One of the main applications in rigid polyurethane foam is the use of turgon wall wall sandwich panels as a layer of thermal insulation …

Methods For Assessing The Efficiency Of Urban Public Transport, A.A. Nazarov

The Scientific Journal of Vehicles and Roads

The article presents methods for assessing the effectiveness of urban public transport based on the analysis of the operational characteristics of their types. Methods for a comprehensive assessment of options for solving the urban public transport system are analyzed.

Indicator Of Accident And Analysis Of Existing Problems Of Ensuring Traffic Safety In Major Cities Of Uzbekistan, Jamshid Abdunazarov

Scientific-technical journal

This article is devoted to the analysis of accidents and road safety in large cities of the Republic of Uzbekistan such as Bukhara, Fergana and Samarkand. And also, statistical data of road traffic accidents are processed throughout the republic. Such factors as transport risk, social risk and severity of the consequences of a road traffic accident have been identified. In conclusion, the author's opinion on the factors affecting road safety in the republic is presented.

Cross-Checking Automated Passenger Counts For Ridership Analysis, Simon Berrebi, Sanskruti Joshi, Kari Watkins

Journal of Public Transportation

Due to concerns about data quality, Automated Passenger Counting technology has rarely been used to analyze local ridership trends. This paper presents a novel framework to test the consistency and completeness of passenger count data in four cities. The data are aggregated at the system level and compared with the National Transit Database between 2012 and 2018. In all four agencies, passenger counts closely follow the fluctuations observed in the national transit database. There is, however, a slight drift in two of the four agencies. At the stop-level, missing and duplicate vehicle-trips are identified using schedule data from the General …

Driver Perceptions On Taxi-Sharing And Dynamic Pricing In Taxi Services: Evidence From Athens, Greece., Christina Milioti, Konstantinos Kepaptsoglou, Konstantinos Kouretas, Eleni Vlahogianni

Journal of Public Transportation

The taxi industry has changed dramatically during the last decade, as ride-sourcing applications, ride-sharing and alternative pricing schemes have emerged, either as complementing or competitive services and strategies. After some years of familiarity with such trends, it is interesting to explore where the taxi industry stands with respect to possible service innovations. This paper explores behavioral patterns of drivers, focusing on issues such as their preferred way of conducting business, and their views on introducing taxi-sharing and dynamic pricing. Data collected from a face-to-face questionnaire survey in Athens, Greece are exploited, and appropriate econometric models are developed for the purposes …

Using Fuzzy Clustering Of User Perception To Determine The Number Of Level-Of-Service Categories For Bus Rapid Transit, Yueying Huo, Jinhua Zhao, Xiaojuan Li, Chen Guo

Journal of Public Transportation

The concept of level of service (LOS) is meant to reflect user perception of the quality of service provided by a transportation facility or service. Although the LOS of bus rapid transit (BRT) has received considerable attention, the number of levels of service of BRT that a user can perceive still remains unclear. Therefore, in this paper, we address this issue using fuzzy clustering of user perception. User perception is defined as a six-dimension vector of the perceived arrival time, perceived waiting time, bus speed perception, passenger load perception, perceived departure time, and overall perception. A smartphone-based transit travel survey …

Understanding Transantiago Users’ Motivations For Paying Or Evading Payment Of Bus Fares, Carolina Busco, Felipe González, Yamil Jaqueih, Felipe Jiménez, Borja Alonso

Journal of Public Transportation

Transantiago, the public transport system implemented in Santiago, Chile, remains a controversial subject of public debate due to constantly increasing fare evasion rates throughout its decade-long existence. The

Transantiago, the public transport system implemented in Santiago, Chile, remains a controversial subject of public debate due to constantly increasing fare evasion rates throughout its decade-long existence. The research question under consideration in this paper is as follows: What motivates individuals to evade or pay bus fares? To answer this question, we developed a multidisciplinary study that combined relevant engineering expertise with a sociological perspective and combined quantitative analyses with qualitative methodologies …

People-Focused And Near-Term Public Transit Performance Analysis, Alex Karner

Journal of Public Transportation

Public transit ridership forecasts have long played a role in understanding the potential success of a policy or investment, but their limitations have led researchers and practitioners to identify other performance analysis approaches. Accessibility, or the ease of reaching opportunities, has become very popular and widely used for this purpose. But commonly used accessibility measures also embody weaknesses that are seldom acknowledged; these limit their utility for truly understanding the benefits of transit investments. In this paper, we identify the pros and cons of these competing approaches and offer a third strategy. Specifically, we describe how revealed travel behavior data, …

Analysis Of Scientific Work On The Composition Of A Mixture Of Sulfur-Containing Asphalt And The Selection Of The Composition Of A Mixture Of Sulfur-Containing Asphalt, A.T Mamatmuminov, I.S. Sadikov

The Scientific Journal of Vehicles and Roads

On the walls of the corpse valtingoproptally-modification of modifications applied technology Burich recommendations berylgan. The Association of Uni and Uni bitumen bilan gardens Akhun-modifier - complex ether (efirga hidamli tripinuidlar) ullandi, shuningdek oltingugurtli bitumni is prepared by jasper-ketligia liar recommendlar.

The Very Position Of The Geosynthet Meeting Of The Working Group, S.I. Komilov

The Scientific Journal of Vehicles and Roads

Screeching, as it turned out, Uzbekistan conditions establishing ethylaethan car johnllari judah difficult conditions suningdek physicist mechanic features turlicha bulgan gruntlada olib beard. Inle tuzilma elementlarikonligini,turgunligi shungdek yir tuzam framilyavlarini YUK Kulyaba ability to provide basic platonai avmani. Keshimoga announced dolinashadigan Bullsak, Jul kuziyavalash and gadyazda kuchirivchi zhumladman geosynthetic materialar cuttercatic declarati sitag Olgan hailik zarda technologist heat INS inshashirze metadze.

Some Issues Of Forecasting Deformation And Destruction On Highways, А.Х. Urakov, М.Т. Mamatkulov

The Scientific Journal of Vehicles and Roads

The article analyzes the existing methods of forecasting deformations and destructions on highways, identifies the causes of deformations and destructions, and provides recommendations for the prevention of defects on roads. There are no criteria for assessing the properties of road-building materials in terms of the degree of destruction and the intensity of the destruction process.

New Transformer Changer Static Characteristics Measuring Angle Silences Difference, S.F. Amirov, N.R Yuldashev, J.S. Fayzullayev

The Scientific Journal of Vehicles and Roads

The article presents the characteristics of a new transformer changer measuring the difference in angle silences, as well as the static characteristics of the measuring device without loading and under loading. Conducted studies have shown that the interrelated sequential and inductively dependent on the toroidal magnetic conductor in the design of the transformer changer prototype, measuring the difference in angle silences, provides for the possibility of reducing the size and weight of the device to the account of the rejection of the external magnetic conductor, as well as slightly simplifying the constructive structure of the The static characteristic of the …

Forecasting Of The Residual Life Of Parts And Interfaces Of Vehicles During Their Repair, G.K. Ubaydullayev, S.R. Shadiyev, D.G. Rasulova

The Scientific Journal of Vehicles and Roads

The article discusses the issues of determining the residual life of parts and interfaces of vehicles during their repair. Theoretical prerequisites and the sequence of their definition are given.

Chiziqlashtirish (Liniyalashtirish) Nazariyasining Ba’Zi Bir Muammolari, T.N. Gayubov, X.X. Jumanov

The Scientific Journal of Vehicles and Roads

Ushbu maqolada, chiziqli bо‘lmagan transformatsiyani olish usulini topishdan iborat bо‘lgan statik chiziqli chizish muammosi muhokama qilinadi. Ushbu ishda biz natijalarni boshqa usullar bilan taqqoslab, birgalikda statik va garmonik linearizatsiya bilan chiziqli bо‘lmagan ob’ektlarga dispersiya funksiyasini qо‘llashni kо‘rib chiqamiz. Chiziqli bо‘lmagan modellar turli xil chiziqli dinamik aloqalar va chiziqli bо‘lmagan inersial elementlarning kombinatsiyasi shaklida modellashtiriladi.

Analysis Of Modern And Resource-Efficient Technologies Used In The Assessment Of Transport And Operational Indicators Of Automobile Roads, A.X. Urokov, R.R. Soataliyev

The Scientific Journal of Vehicles and Roads

V dannoy statye izucheni vozmojnosti razlichnix prilojeniy, ispolzuemix dlya izmereniya rovnosti dorojnogo pokritiya s pomoshyu smartfonov, a takje proanalizirovani vozmojnosti, preimushestva i nedostatki dlya sozdaniya dorojnoy bazi dannix v usloviyax Uzbekistane.

Bus Rapid Transport System In Samarkand City, M. Malikov

The Scientific Journal of Vehicles and Roads

High-speed bus transportation is a system of high-speed public transport with a bus rolling stock, which allows achieving high passenger capacity, speed and quality of services provided at relatively low costs due to a set of characteristics: dedicated bus corridors, as a rule, axial placement (in the center of the street); off-board (before boarding the bus) fare collection system; landing at the platform level (the platform is at the same level with the bus floor); priority of bus transport at intersections and other elements of service quality assurance (in particular, information technology and building a strong brand).

О‘Zbekiston Respublikasi Iqlim Sharoitida Sementbeton Qoplamalarini Ekspluatatsiya Qilishning О‘Ziga Xos Xususiyatlari, A.X. Urokov, X.D. Urolova

The Scientific Journal of Vehicles and Roads

Ushbu maqolada sementbeton qoplamalarining respublika iqlim sharoitida ishlash xususiyatlari о‘rganiladi. Sementbeton qoplamalarini ekspluatatsiya qilish bо‘yicha ishlarni tо‘g‘ri tashkil etishning qoplamaning xizmat qilish muddatiga ta’siri tahlil qilindi. Beton qoplamalarni ekspluatatsiya qilish bо‘yicha Amerika tajribalari о‘rganildi. Havo harorati ta’sirida turli xil havo haroratidagi о‘zgarishlar va qoplamalarda yuzaga keladigan zо‘riqishlar tahlil qilindi. Respublikada mavjud operativ ishlarni tashkil etish muammolari tahlil qilindi. Quruq issiq iqlimning xususiyatlari о‘rganildi. Qoplamalarda nuqsonlar paydo bо‘lish sabablari tahlil qilinib, ularning paydo bо‘lishining oldini olish bо‘yicha tavsiyalar berildi. Rivojlangan mamlakatlarning texnologik jarayonlarni takomillashtirish tajribasi kо‘rib chiqilib, ushbu texnologiyalarni Respublikamiz sharoitida qо‘llash bо‘yicha takliflar berildi.

Occupational Health And Job Satisfaction Assessment Of Bus Rapid Transit (Brt) Drivers, Alireza Samerei, Kayvan Aghabayk, Alireza Soltani

Journal of Public Transportation

Several studies have focused on ergonomics of commercial and urban bus drivers; however, there exists a dearth of research on BRT drivers. This study was conducted to investigate the factors affecting the BRT drivers' mental health and satisfaction. The study was carried out on 171 BRT drivers in Tehran, Iran. The required data were collected through two questionnaires. The Classification and Regression Tree (CART) and Hierarchical clustering (HC) was used to extract factors affecting mental health and satisfaction of BRT drivers. The important factors affecting BRT drivers' mental health were: dispute with passengers, depression, BMI, criminal behaviours of passengers, driver's …

Development Of A Model For Analysis Of Traffic Accidents Taking Into Account The Level Of Automobilization And Population In The Republic Of Uzbekistan, Jamshid Abdunazarov

Scientific-technical journal

This article is devoted to the development of a model for the analysis of traffic accidents in the Republic of Uzbekistan, taking into account the level of motorization and population. And also, statistical data of a road traffic accident throughout the country is processed to determine the forecast of a possible accident rate using the model of prof. R. Smid. In conclusion, a comparison of the methods for predicting the fatalities in road accidents is provided.

The Impact Of Vision Zero Initiatives On Road User Safety In New York City, Alex C. Phares, Md Amdad Hossen, Kakan Dey

Mountaineer Undergraduate Research Review

Despite modern vehicles, improved transportation infrastructure, and advanced traffic signals, more than 36,000 Americans die from traffic crashes every year1. With the goal of reducing traffic fatalities to zero, New York City (NYC) adopted Vision Zero (VZ) initiatives in 2014 and has deployed 23 categories of countermeasures, ranging from road improvements to training and community outreach programs2. In this research, trend analysis and hypothesis tests were done on NYC traffic fatality data for three main categories of roadway users: motorists, cyclists, and pedestrians, to evaluate the success of the VZ initiatives. It was found that annual fatalities of both motorist …

Increasing Boarding Lost Time At Regular Bus Stops During Rainy Conditions: A Case Study, Margarita Novales, Alfonso Orro, José-Benito Pérez-López, Jorge Feal, Miguel R. Bugarín

Journal of Public Transportation

Inclement weather conditions affect the behavior of travelers and transportation system operations. Understanding this influence can help improve operational planning schemes for any mode of transport, especially for buses. One of the factors that can be affected by rainfall is the time expended by a passenger from the moment a bus opens its doors until he/she boards the bus. This time is known as the boarding lost time (BLT); it was first introduced in the last edition of the Transit Capacity and Quality of Service Manual (TCQSM). TCQSM only considers the BLT for bus rapid transit (BRT) stations with more …

Analysis Of The Modes Of Movement Of Buses During Their Journey, A.M. Ochilov

The Scientific Journal of Vehicles and Roads

The article analyzes the order of movement of buses, increases the efficiency of passenger transportation in the public sphere in the city of Tashkent, reduces the number of private cars, pollution of the city ecology, the costs of Organization of Traffic Safety, profitability of automobile enterprises engaged in passenger transportation, etc.k. the highways solve the loading problems. Issues arising at" tashshahartransxizmat " JSC were considered in the coverage of their solutions. In increasing the efficiency of Transport, the main focus is on the wide introduction of information and communication technologies, as well as the selection of bus routes and the …

Calculation Method Of The Engine Indicators Of An Automatic Diesel Car In The Matlab Program, S.S. To’Xtamishov

The Scientific Journal of Vehicles and Roads

Automation of technological process control of modern cars is becoming a requirement of the time. Automation provides a number of conveniences for drivers and passengers. Thus, cars equipped with an automatic steering transmission allow the driver to make efficient use of engine power in addition to convenience. This article presents a mathematical model of the method of calculating the engine and vehicle performance during the movement of a vehicle with an automatically controlled transmission in the software Matlab / Simulink. The development of this method is of practical importance. By simulating a mathematical model, we see how the system works …

The Monitoring Of Dangerous Exogen Geological Processes Using The 3d Scanner, S.T. Djabbarov, R.H. Mukarramov

The Scientific Journal of Vehicles and Roads

The article focuses on observations, spatial-coordinate data and laser scanning data to prevent or predict the risk of dangerous geological processes, all of the data obtained in GPS receivers are copied to a table and then horizontal and vertical landslides are generated in graphs. With the help of laser scanners, along with this information, a topographic plan and a 3D model of the avalanche site are created. The 3D model of the site, on the other hand, shows the avalanche section up to and from each avalanche crack. The above information is in the exact avalanche section and is the …