Information on RODEL Software

RODEL is a fully interactive program for aiding roundabout design. Rather than simply checking designs after they have been drawn, RODEL generates geometry prior to scheme drawing. This avoids the time consuming practice of repeated drawing and checking. The program operates in two modes:

MODE 1
Sets of entry geometry are generated for each approach. Each set is equivalent to the input value of queue, delay or VC Ratio (RFC). The set that best fits the constraints is selected for each approach.

MODE 2
The simultaneous display of input and output allows the selected geometry to be repeatedly modified and refined. The resulting queues and delays are displayed every 1 or 2 seconds enabling the designer to develop a "feel" for the design and to converge on an optimum layout within the constraints.

Flow data is stored for the AM, PM and OP (off-peak) periods, and may be input directly for the whole period or synthesised from coarser flow data for the whole or part of the period. The results from RODEL are for a specified VC Ratio Confidence Level, consequently the risks involved when trading-off delays, costs and safety are clearly known. This leads to more robust designs at little extra cost. The results can be specified for the whole period or for a sub?period. Delay costs are calculated for the AM, PM, OP, daily and annual periods, enabling cost/benefit evaluation of options.

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RODEL Training Workshops and Courses

Ourston Roundabout Engineering, Inc. is a qualified RODEL training organization; providing RODEL training for private and governmental agencies across North America. Our experts have taught introduction, intermediate and advance RODEL classes for ITE, ASCE, RODEL User Groups, universities, private consulting firms andgovernment agencies.

Please contact us for more information or to schedule a software training workshop.