Tranxit provides transport planning services ranging from data collection, demand assessment & conceptual design solutions to state-of-the-art traffic audit using micro simulation using VISSIM as modelling platform .
> Problem analysis (surveys & analysis)
> Demand assessment & Projections.
> Planning & Design of transport facilities & infrastructure
> Transport Master Plan/ Area circulation plan / CMP
> Feasibility study for transport infrastructure
> Operations master plan (route, schedule & flow) for bus transit systems, transport terminals & depots
> Intelligent transport- Systems Requirement Specifications
> Traffic Audit using micro-simulation using VISSIM as modelling tool.
With most of the consultancy adhering to the old techniques for transport planning services, we integrate the use state-of-the-art planning tools for adding value into transport planning decisions. This involves use of intelligent systems, modelling & 3D micro simulation.
Why 3D micro-simulation?
Complex mathematical & statistical models are used in the transport planning industry for assessment of any transport project (ranging from a local subway, a city level facility like a bus terminal or a mass transit system like metro or the Bus Rapid Transit). The results from most such models are in form of 'numbers or graphs' which are incomprehensible to a non-technical audience concerned with decision making or other persons related to projects.
A 3D micro simulation is a tool for transport planners to analyze, study and present different dynamics of 'time, number and flow' scenarios through virtual reality. This helps in visualizing many possible scenarios and assess them fairly realistically. This has the potential to help the decision making process by providing an easily comprehensible medium for decision support and visualize any anticipated situation in advance.
VISSIM is the leading microscopic simulation program for multi-modal traffic flow modelling. With its unique high level of detail it accurately simulates urban and highway traffic, including pedestrians, cyclists and motorized vehicles. Unlike most of the other such software available we believe this is best suited for simulating Indian conditions. It has the ability to analyze traffic & pedestrian flow according to driving/ human behaviour pattern observed! prevalent in India. All possible parameters ranging from driver's response time to vehicle turning geometrics can be configured for each class & type of vehicle considered.
VISSIM is the ideal tool for transportation professionals who want to simulate different traffic scenarios before starting implementation. It thus allows them to find a solution which takes traffic and transportation quality, safety and cost into consideration. Failure scenarios can be visualized much in advance to help strategize system implementations.
As VISSIM combines traffic engineering expertise and state-of-the-art presentation options (even 3D animations), it is not only used by transportation professionals, but more and more decision makers and local authorities are choosing VISSIM to convincingly show how effective a projected measure might be, regardless of whether a new road is going to be constructed or a new tram line is being planned. http://www.ptvag.com/cgi-bin/traffic/traf_vissim.pl
How IT WORKS?
The modelling process required building a base network in 3D. The network can be roads, pavements, rail lines, staircases & ramps with specified 'general' traffic flow direction with 'configurable' embedded rules of signalling, priorities, speed control and direction change. All applicable vehicle classes and types are calibrated for their turning geometries, acceleration-deceleration parameters, driver response times & lateral tolerances. These vehicle sets are then configured to originate at specified points in the network and left to negotiate their respective weaves along their scheduled paths that may be predefined or dynamically generated during the simulation.
Calculations are done every millisecond to ascertain the relative and absolute position of each participating 'mode' based upon the master parameters and individual mode characteristics. The absolute positions are displayed on the screen as a running visual which displays accurately individual and collective flows, movements, stops, starts, congestions & network blockages.
Typical Problem Application Areas
Transport Terminals, manufacturing facilities and building complexes often overlook the 'time, space, number & flow' dynamics of different modes that are required to use the allocated movement space. It is universally being discovered that 'unwarranted' congestions situations arise out of inadequate planning from the 'time, space, number & flow' dynamics perspectives.
India has one of the highest number of 'classes' and 'variants' of vehicles in any class in terms of the size, power, turning angles and movement characteristics. This fact itself makes correct evaluation of spatial needs of a desired flow channel almost impossible without the use of micro-simulation as a decision support tool.