rail traffic control design

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CAREERS IN TRANSPORTATION & ENGINEERING

CAREERS IN TRANSPORTATION & ENGINEERING

Design Freeways, Mass Transit, Rail or Street Projects Design Traffic Signal, Striping or Traffic Control Plans Design High Tech Intelligent Transportation Systems Work in/Operate a Traf[r]

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ABB powers rail traffic in Germany

ABB powers rail traffic in Germany

The world’s largest rail converter station is currently under construction in Datteln, North Rhine Westfalia and will provide a power rating of 413 MW. Ordered by the German power supplier E.ON in 2007, it will replace existing rotary converters that have reached the end of their economic and technical lifespans. The converter station will receive power at 50 Hz from the new nearby Datteln power station and feed power at 16.7 Hz into the 110 kV DB network. The Datteln node is one of the most important supply points of DB’s grid. A very high availability is therefore required of the converter station. ABB is responsible for the entire engineering of this project, ie, the design of the converter system, specification of all the components and development of control and protection more, flexible requirements. an converter reach efforts successful demanding software. Since it is a turnkey project, installation and commissioning is also part of the project scope. The scope of supply for ABB includes four independent converter stations each with a rated power of 103 MW, obtained from four standard 30 MW converters. The built-in
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Benefit measures for noise abatement: calculations for road and rail traffic noise

Benefit measures for noise abatement: calculations for road and rail traffic noise

choices. A shortcoming is that it can be difficult, and some- times impossible, to estimate the values of interest, for example the WTP for noise reduction at different times of the day [17]. The methods that use the SP approach offer flexibility, but the hypothetical scenario is their weakness. 4 The SP method most often used to evaluate noise is the “contingent valuation method” (CVM) [43], in which the respondents directly state their WTP for the good, here a reduction of the noise level. The strength of the CVM and other SP methods, as mentioned above, is that the analyst him/herself constructs the study and may therefore ask ques- tions he/she wants answers to and control for how various factors, such as study design, may have affected the results. We start this overview of evaluation studies on noise abatement by focusing on Swedish studies. Table 1 con- tains Swedish WTP studies for traffic noise. As shown in the table, two studies use the hedonic approach and thereby market data [28, 71], while four studies use a hypothetical approach, either CVM [12, 35, 70] or “stated choice mod- elling” (SCM) [17]. The two hedonic studies employ the effects of traffic noise on property prices in T¨aby [28] and
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Design & Analysis of Rail Wheel Failure

Design & Analysis of Rail Wheel Failure

The Wheel and Axle is modeled in modeling software like the Solid Works in order to study the stress distribution and temperature distribution in the wheel. The wheel is integrated into five parts namely Rim, Plate, Hub, Flange and Thread. The train wheel has got a very special place in today’s world because it is the only thing which runs on rails. And both rail and wheel are made up of the same material.

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The constant movement of people from rural to urban areas in search of greener pastures has resulted in urban population explosion and over-stretched infrastructures. One of such over-stretched infrastructure is the road, a situation which has culminated to increased traffic. Although traffic lights have always been used for controlling the movement of traffic (pedestrian or automobile), traffic management in major cities around the world has continued to be a subject of concern. In an attempt to tackle the traffic management concern, various designs have either been proposed or implemented. The first of such installation dates back to 1868 [1-2]. Since then, modern day civilization has found application in its use for managing traffic in cities in the absence of traffic wardens or officers; though with innovations, changes have been made in signs, but the working principle for traffic and pedestrian control remains the same. With the rapid growth in the population of our cities, the busy nature of our roads and the need to maximize one’s time, there arise a need for a more dynamic,
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TRANSFERRING CONTAINER CRANES AROUND CORNERS USING CURVED RAILS DESIGN CONSIDERATIONS

TRANSFERRING CONTAINER CRANES AROUND CORNERS USING CURVED RAILS DESIGN CONSIDERATIONS

Many wharves have nonlinear berths that meet at a corner. It is often economical to share cranes between these berths. To share, cranes must transfer between them. This is no simple task. Transfer methods range from shuttle systems that move the cranes between the berths to curved rails that the cranes gantry on. Recently, the most popular method has been the curved rail. This seemingly simple method is actually quite complicated to design and has many options for the owner. Larger curve radii use up valuable yard space. Smaller radii may require a side shift mechanism in the gantry system to accommodate gage change. Working to the corner requires switches and a power transfer method.
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Traffic exposure and medication - a GIS based study on prescription of medicines in the Tyrolean Wipptal

Traffic exposure and medication - a GIS based study on prescription of medicines in the Tyrolean Wipptal

component. One can consider the propagation of pollutants, which can often be traced back to a known spatially located source, or the noise induced annoyance along traffic carriers. However, unlike Snow’s cholera example, modern environmental health research mostly studies associations that cannot be reduced to a simple cause-and-effect relationship. Health and well- being are influenced by a vast number of different factors. If and how air pollutants or noise affect an individual person, depends on a broad spectrum of different components. Therefore, quantitative estimations of associations between noise or pollutant exposure and health effects are often very difficult. In many cases the number of people studied isn't sufficient in order to statistically prove associations, since the causes for the studied health problems can be diverse and the associations might be weak. In order to study and quantify effects of environmental exposure on human health and well-being the sample size must be very large. This often leads to very expensive and time consuming study designs due to the costliness of data collection.
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Cargovibes : human response to vibration due to freight rail traffic

Cargovibes : human response to vibration due to freight rail traffic

(below 20 Hz). The latter problem cannot be solved by conventional vibration-control measures such as under-sleeper pads, or ballast mats; nor is constant tamping of the track a feasible response. WP 3 focused on the development of three innovative mitigation measures for vibrations generated by freight rail traffic at three different levels: the wheel– rail contact point, the track infrastructure and the transmission path. Methods for assessing the effectiveness of these measures were developed by WP 4. WP 5 involved the end user board which consisted of industry and stakeholder representatives, WP 6 focused on aggregating and disseminating the information gathered while WP 7 covered management of the overall project. This paper concentrates on the work of WP 1 which investigated human response to vibration, including sleep disturbance, community annoyance and the production of a best practice guide for evaluating response.
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APPENDIX E Implementation Plan Guidance

APPENDIX E Implementation Plan Guidance

(d) Coordination with other projects (defining project’s relationship with other projects). (5) System start-up plan. Integration is the “glue” that binds components together to form the system. Components are physically tied based on interfaces defined by the system architecture and tests are performed to verify and validate whether or not system requirements are met. Verification of a component or subsystem determines if the components or subsystems are interfaced as per design and are working properly. Validation consists of ensuring (through acceptance tests) that all inter- faced components or subsystems meet system requirements. Software coding and database develop- ment are also important elements of this phase. The start-up process is typically performed in a limited time period immediately after system integration. A start-up plan is necessary to document the validation process (software and system evaluation). An implementation plan should include, but is not limited to, the following:
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Green Wave Traffic Theory Optimization and Analysis

Green Wave Traffic Theory Optimization and Analysis

Encountering the red traffic light, vehicles will slow down and stop before the stop line, and then remain idle waiting for the green signal, finally accelerate to leave the intersection after the traffic light turns green, the whole process involves vehicle states of acceleration, idling, deceleration. According to the above analysis, in such driving conditions, constant speed state is of small proportion, which is not conducive to energy conserva- tion and emission reduction. In order to avoid the above situation, UPS (United Parcel Service) prohibitsits transport vehicle turning left at intersections, and detouring to achieve the purpose of left turn, then the company saved a total of ten million gallons of gasoline from 2004 to 2009, reduced one hundred thousand tons of carbon emissions, equivalent to emissions of 5300 cars a year.
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The formulation of sustainable
transport and movement strategies  
Case Study The University of
Tasmania (Sandy Bay)

The formulation of sustainable transport and movement strategies Case Study The University of Tasmania (Sandy Bay)

These discussions highlight the inadequacies of parking form, street design, public transport legibility, services for the pedestrian and bicyclist, and traffic control.. Chapter 5 there[r]

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Access control and traffic bollards. Access control and traffic bollards

Access control and traffic bollards. Access control and traffic bollards

the opening of a door, control the status (open/closed) and sound an alarm in the event of unauthorised opening. It works totally autonomously ("SA" means Stand Alone) with no external management board or computer for programming and downloading data. The electronic control unit comprises two interconnected boards:

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Optimisation of Area Traffic Control for Equilibrium Network Flows

Optimisation of Area Traffic Control for Equilibrium Network Flows

The first test network is a network containing two signal-controlled junctions, w hich has been modified from B raess’s road netw ork (M urchland, 1970; Pas and Principio 1997). The two-junction network consists of one origin and one destination, two signal-controlled junctions and eight TR A N SY T links. Link travel times are decided by the sum of undelayed travel time along this link and the average delay incurred by traffic at the downstream junction. For each signal controlled junction, the travel times on entering links will be affected by the changes of the corresponding signal tim ings, and for non-signal controlled links the travel times are constant throughout this com putation process and for those links have greens over the whole cycle the travel times are constant through this com putation. D etailed layouts for the tw o-junction network for use in signal settings and in the traffic assignm ent are respectively given in Figures 6.1a, and 6. Ic, together with the basic inform ation about the signal control variables given in Figure 6.1b. Using typical values found in practice, the m inim um green times for each group is 7 seconds, and the clearance times between incom patible signal groups are 5 seconds. The m inim um and m axim um common cycle tim es are specified as 24 and 90 seconds, and the travel dem and flows are specified as a rather low value as com pared to the values of saturation flows at each signal-controlled link because in this case we simply want to know the effectiveness of the three kind of solution methods when they are im plem ented in a lightly loaded traffic network. The corresponding information of input data is also given in Tables 6.1a and 6.1b.
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Radio Frequency Sensor-Based Traffic Light Control For Emergency Vehicles

Radio Frequency Sensor-Based Traffic Light Control For Emergency Vehicles

ABSTRACT: Most cities in Nigeria experience traffic congestions during peak periods because road transport remains the dominant mode of transportation in Nigeria. These congestions have the consequence of affecting the efficiency, reliability and safety of emergency vehicles in performing their duties which are vital for saving lives and reducing property losses. This paper presents a prototype of an intelligent RF based traffic control system for emergency vehicles that transmits using amplitude shift key modulation technique at a frequency of 433 MHz and maximum sensing distance of 65 meters. The system operates in two modes: normal and emergency sequences. Under normal sequence, the designed pass period per lane was 15 seconds and complete cycle is 45 seconds. Under an emergency sequence, the transmitted signal overrides the normal sequence of traffic because the microcontroller will run the interrupt service routine (ISR) or interrupt handler which will trigger the red light on all the lanes. The prototype constructed gave a sensing distance of 42.2 meters, pass period per lane of 12 seconds and a complete cycle period of 36 seconds.
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Statement of Feasibility and Feasibility Report

Statement of Feasibility and Feasibility Report

History shows that the introduction of a new modal service typically results in improved service and lower pricing from the trucking industry. Therefore, it is very likely that if a rail intermodal facility and service is successfully developed in the Study Area, trucking prices along competing lanes will be reduced to maintain market share. In past cases, operators and owners of new modal services have partnered with freight forwarders to help sell their services. But because freight forwarders provide a service to (and remain loyal to) shippers whereby they secure the lowest cost with predictable service levels, their typical response is to initiate competition with the trucking industry to secure lower prices from that mode. Often times this leads to comparable prices across the modes, leaving trucking with the advantage of service reliability and hence gaining back market share. The best approach for developing a long-term sustainable pricing structure is to partner with a Class I railroad as well as with the ports and the ocean carriers who are more likely to remain committed to long- term mode shift policy objectives that reduce congestion at the ports and improve overall service reliability to their overseas customers.
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Advance Traffic Light System Based On Congestion Estimation Using Fuzzy Logic

Advance Traffic Light System Based On Congestion Estimation Using Fuzzy Logic

Conventional methods for traffic signal control based precise models fail to deal efficiently with the complex and varying traffic situations. They are modeled based on the preset cycle time to change the signal without any analysis of traffic situation. Due to fixed cycle time, such systems do not consider that which intersection has more load of traffic, so should kept green more or should terminate earlier then complete cycle time. In case of intersections, conventional control systems only consider waiting time of signals on different directions but not the vehicle directions. Such situations can be seen in various areas of Dehradun, India like Darshanlal-chowk, where traffic flow varies in different hours and heavy traffic flows in morning and evening timings because of large number of offices on that route. Also, in different intersections, traffic flow abruptly changes in schools timings then other daily hours. Preset Cycle Time Controllers fail in such scenarios because they could not get complete information of vehicles earlier. Also, sometimes situation arises, when some VIP movement is there, the traffic flow has to be diverted to other available intersections. In such situations, efficiency of human decision-making is unprecedented because decision making objectives are unclear [1, 2].
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URBAN TRAFFIC CONTROL

URBAN TRAFFIC CONTROL

When a UTC system is integrated with a Public Transport or Emergency Vehicle Management system, it is possible to give priority at intersections to buses, trams or emergency vehicles (e.g. ambulances). The priority may be absolute (vehicles are always given priority over other traffic) or selective (only in certain circumstances (e.g. buses/trams that are behind schedule). A further advantage of integration with the public transport management system is that the availability of traffic information can greatly improve the accuracy of the information provided to passengers (e.g. arrival time estimates for buses).
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Design and Performance Analysis of Low Power Rail to Rail Op Amp

Design and Performance Analysis of Low Power Rail to Rail Op Amp

Vsup,min =Vsgp +Vgsn +Vdsatn +Vdsatp (4) However, a main shortcoming of a rail-to-rail structure is that its total transconductance will change. That is, when the input voltage can make both pairs on, its total transconductance will be twice of that when only either pair is on. This will bring to the change of the loop gain and thus cause distortion. It will decrease phase margin and make the Op-amp unstable.

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THE EXPERIMENTAL STUDY OF TRAFFIC MANAGEMENT SYSTEM FOR URBAN TRANSPORTATION

THE EXPERIMENTAL STUDY OF TRAFFIC MANAGEMENT SYSTEM FOR URBAN TRANSPORTATION

The essential purpose of road markings is to guide and control traffic on a highway. They supplement the function of traffic signs. The markings serve as a psychological barrier and signify the delineation of traffic path and its lateral clearance from traffic hazards for the safe movement of traffic. Hence they are very important to ensure the safe, smooth and harmonious flow of traffic. Various types of road markings like longitudinal markings, transverse markings, object markings and special markings to warn the driver about the hazardous locations in the road are very important for increasing safety. Road markings are aids to control traffic by exercising psychological control over the road users. They are made use of in delineating the carriage way as well as marking obstructions, to ensure safe driving. They also assist safe pedestrian crossing. Transverse markings are provided along the width of the road. Road markings also contain word messages, but since it is time consuming to understand compared to other markings there are only very few of them. Markings are also used to warn the driver about the hazardous locations ahead. Thus road markings ensure smooth flow of traffic providing safety also to the road users.
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Exploring and Enabling Innovation

Exploring and Enabling Innovation

Terminal Operations Service Design Rail Yard Management Wayside Asset Management Locomotive Maintenance Railcar Maintenance Network Operations/TMS Fuel Management Rail Su[r]

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