Road Vehicle Operation Research Articles

Traffic behavior analysis of the urban expressway ramp based on continuous cellular automata

Urban expressway is an essential part of the urban transportation network, and its role is to speed up traffic operation and relieve traffic congestion. To investigate the complex traffic flow phenomena at urban expressway ramps, we use the Continuous Cellular Automata (CCA) model to model and analyze the urban expressway with entrance and exit ramps in a unified manner. Considering the vehicle's merging, diverging and following behaviors on urban expressway with an entrance and exit ramp, we design the vehicle's main road merging rules, ramp inflow and outflow rules, Cooperative Car-Following for Lane Change process analysis (LC-CCF) model, and improved Nagatani lane change rules to control the overall road vehicle operation. Based on this, we propose a CCA model for urban expressway ramp traffic flow. To clarify the model, The Chengdu Second Ring Elevated Road with entrance and exit ramps as a scenario is used for experiments. The results show that: (1) The spatio-temporal diagrams show a significant metastable congestion phenomenon and distinct congestion boundaries primarily located near the merge and divergence area. Congestion tends to start at the merge and divergence area and then spread outward. (2) The ramp disturbance has an increasingly pronounced effect on average speed and density as Pin−main and Pin−ramp increases. (3) The density-lane change frequency relationship tends to increase and then decrease, with an increase in the frequency of lane changes increasing the interference between vehicles in different lanes and affecting the average traffic speed. The lane change frequency is the main reason for the differences in traffic flow between lanes. (4) The CCA model can effectively characterize congested traffic flows on urban expressway ramps.

Analysis of Drainage Points on Red Tourist Road of Li Dazhao's Former Residence

This article is located in the Tangshan Leting County second-class Highway. The total length of the designed road is about 3514 meters and the designed speed is 60 km/h. Vertical section design is to design vertical slope and vertical curve, and calculate the vertical curve elements, pay attention to the combination of horizontal and vertical design; Cross-section design is to determine the shape of cross-section, carry out super-high design and calculate earth-rock work under the condition of considering many factors. This paper analyzes the method of constant gradient arch in cross section and longitudinal section and the method of rotation around the edge of central divider, and mainly analyzes the positive significance of using these two methods to pavement drainage, as well as the impact on the road vehicle operation.

Analisis Dampak Kesalahan Dalam Simulasi Manajemen Elektronik Mesin Pada Pengoperasian Kendaraan Bermotor

For internal combustion engine electrical management in order for an engine to function properly, all its electronic components must function and play their role. Failure of these electronic components may result in improper preparation of the fuel mixture. This also affects driving safety. The impact of individual errors can have a negative impact on traffic safety and can also have a negative impact on other participants. The subject of this study was to investigate the impact of failure of electronic components on selected operating characteristics. This article is to determine the failure rate of electronic mechanical components and can affect the operation of road vehicles. Eight electronic system faults are simulated with specific vehicles and use fuel assemblies in gasoline fuel. Measurements were made based on laboratory conditions that gave to change the characteristics of the vehicle handling between damage and corruption. Making the vehicle power parameters and the selected exhaust emission components are determined for the selected vehicle characteristics. The results show that the engine failure of the electronic system has a great impact on the operating characteristics, and at the same time there are situations in the normal operating state of the vehicle in which some of these defects are unknown to the vehicle operator ricefield. The results of the publication can be used in the fields of written law, production and operation of road vehicles, and mathematical modeling of gas emission production from road transportation.

Implementation of Multi Level Traffic Controlling System using IoT

Abstract: In civic areas, traffic system is one of the significant pointers to show the growth and progress of a megacity and it also influences the quality of life of people living in metropolitan metropolises. In recent times, there's a significant increase in operation of road vehicles which is getting challenge for existing transportation system. The presently stationed traffic system isn't grounded on the traffic position and a predefined time is allocated for traffic signals at every road crossing which results in traffic congestion and situation becomes worst in the peak business hours. When traffic demand is great enough that the commerce between vehicles slows the speed of the traffic sluice, this results in some traffic. This high position business traffic contributes in the pollution by the emigration of CO 2 and several other adulterants in air. Also, it also causes tripling of the energy consumption and accordingly put adverse effects on the economy as well. To address the above problem, this paper presents the development of congestion level based dynamic traffic control system using IoT. It regulates the traffic lights duration grounded on the real time position of the traffic measured at the road crossings by using IR detectors. The development of this design is divided in three phases i.e., simulation and sense/logic development, development of IoT grounded system and eventually hardware implementation. In first phase the simulations are done in Proteus and results are presented in four cases i.e., normal routine, low position traffic, medium position traffic and high position traffic. In alternate phase the IoT grounded system is developed by making the communication link between the end bumps and the gateway over the internet. Eventually, the real- time prototype is enforced. In addition we're adding the features like Emergency Vehicle Traffic Clearance i.e., Ambulance or VIP Vehicles, Air Pollution discovery, Theft Vehicle Identification Point and Automatic parking. Keywords: Arduino Uno, IR sensor, LCD display, RF transmitter, Thing view App, RFID EM Module

Influence of Engine Electronic Management Fault Simulation on Vehicle Operation.

The preparation of the fuel mixture of a conventional internal combustion engine is currently controlled exclusively electronically. In order for the electrical management of an internal combustion engine to function properly, it is necessary that all its electronic components work flawlessly and fulfill their role. Failure of these electronic components can cause incorrect fuel mixture preparation and also affect driving safety. Due to the effect of individual failures, it has a negative impact on road safety and also negatively affects other participants. The task of the research is to investigate the effect of the failure of electronic engine components on the selected operating characteristics of a vehicle. The purpose of this article is to specify the extent to which a failure of an electronic engine component may affect the operation of a road vehicle. Eight failures of electronic systems (sensors and actuators) were simulated on a specific vehicle, with a petrol internal combustion engine. Measurements were performed in laboratory conditions, the purpose of which was to quantify the change in the operating characteristics of the vehicle between the faulty and fault-free state. The vehicle performance parameters and the production of selected exhaust emission components were determined for selected vehicle operating characteristics. The results show that in the normal operation of vehicles, there are situations where a failure in the electronic system of the engine has a significant impact on its operating characteristics and, at the same time, some of these failures are not identifiable by the vehicle operator. The findings of the publication can be used in the drafting of legislation, in the field of production and operation of road vehicles, and also in the mathematical modeling of the production of gaseous emissions by road transport.

A Survey on Remote Operation of Road Vehicles

A Survey on Remote Operation of Road Vehicles

Ways of comparing the advantages of operating different types of vehicles in the fleet

Reliability is one of the key features of road vehicle operation. Of course, the operational costs of a vehicle or vehicle fleets are closely related to reliability. If the fleet operator, in this case operator of limestone quarry fleet, operates with older vehicle fleet and gradually renews fleet, situation occurs, where it is possible to assess the advantageousness of fleet renewal not only in terms of reliability, but also the operational costs. Thus, it is possible the retrospective assessment of the correct decisions in tenders.

Linear electric generation system to harvest vibration energy from a running vehicle

Methods to harvest energy that is wasted during road vehicle operation have been studied in recent years. Mechanical vibrations from vertical motion induced by road bumps dissipate a large amount of energy. A linear electric generation system is presented to harvest this energy. The system uses mechanical resonance to maximize the efficiency of harvesting. A shock absorber suspension and electric generator mathematical model were created to analyze the vibration characteristics induced by road bumps during vehicle operation. An electromagnetic simulation using the commercial software MAXWELL (Ver. 13, ANSOFT, USA) was performed to predict the electricity generation. Finally, the magnetic circuit design was optimized to improve the amount of electricity generated. The results demonstrate the possibility of using the proposed approach in practical applications.

Principles of taxation of road motor vehicles and their possibilities of application

The article deals with the taxation of ownership and operation of road vehicles in the Czech Republic. The result of study is the formulation of principles and functions that taxation of road vehicles should meet, including the subsequent evaluation of the feasibility of the optimal structure of the proposed tax. The text identifies many requirements for taxes and tax system, and also functions which have to be fulfilled. These findings are applied to the taxation of road motor vehicles. We find out, during use of standard general methods of scientific work, that taxation of road motor vehicles must provide primarily a fiscal function of a tax in sense of selection of means for the renewal of environmental and other damage caused by operation of road motor vehicles. It is not suitable to prefer other principles primarily in terms of redistribution, stabilization, and other requirements during taxation of operation or ownership of road vehicle. It should also be noted that the model of the proposed tax includes several aspects that do not allow its implementation in optimal form. Nevertheless, it is appropriate to consider the introduction of at least the best possible alternative of constructed model of taxation of road motor vehicles in the Czech Republic. Beside objective theoretical reasons for the change of taxation of road vehicles, it is necessary to take account of efforts made by the institutions of the European Union within the meaning of environmental taxation of road vehicles in the European Union.

Discussion on “The economic basis of battery electric road vehicle operation and manufacture”

Discussion on “The economic basis of battery electric road vehicle operation and manufacture”

The authors' replies to the discussion on “Electrical equipment of battery road vehicles” and “The economic basis of battery electric road vehicle operation and manufacture”

The authors' replies to the discussion on “Electrical equipment of battery road vehicles” and “The economic basis of battery electric road vehicle operation and manufacture”

The economic basis of battery electric road vehicle operation and manufacture

The paper examines the economic factors which have led during recent years to a spectacular increase—in the United Kingdom more than elsewhere—in the number of electric battery road vehicles.It is shown that the cost of operation, which is examined in detail, has moved in favour of the electric vehicle as a result of the longer battery life and the greatly increased cost of labour and petrol.In view of the long life of battery vehicles, a slightly higher first cost for a model of high efficiency giving the best possible performance is economic over a long period, and a formula to compare and evaluate the performance of different models is explained in some detail. The choice of batteries for these vehicles is also discussed.The potential market for this special form of delivery transport is investigated in the light of the limitations of range and flexibility, and it is shown that, while these limitations exist, the mass-production methods of petrol vehicles can never be applicable to battery vehicles. It is suggested that a steady and increasing demand for new vehicles and replacements will call for a limited number of small efficient manufacturers able to give personal service and continuity.

The economic basis of battery electric road vehicle operation and manufacture

The economic basis of battery electric road vehicle operation and manufacture

Discussion on “Electrical equipment of battery road vehicles” and “The economic basis of battery electric road vehicle operation and manufacture” before the Utilization Section

Discussion on “Electrical equipment of battery road vehicles” and “The economic basis of battery electric road vehicle operation and manufacture” before the Utilization Section