Client: Traffic Engineering Company of Rio de Janeiro (CET-Rio) Brief: Deployment studies for the 2016 Olympic family special transportation corridors.
The 2016 Rio de Janeiro Olympic Games will bring major mobility challenges to Rio de Janeiro, both for the public and the Olympic Family. The most important parameter is reliability, that is, minimising changes in journey time not only for the main corridors but also for trips between event locations and the Olympic Village, hotels, airports, and other important facilities.
Modelle (Tectran Group) is using Aimsun software in a series of ongoing deployment studies as part of the Transport Strategic Plan for the 2016 Olympic and Paralympic Games in Rio de Janeiro. The plan includes a special lane network dedicated to the Olympic Family. These special lanes prioritise Olympic Family circulation during the event, either through segregated tracks or priority shift; this includes interventions in road intersections, traffic flow junctions and capillary networks around the Olympic venues.
Aimsun’s integrated macro, meso and micro models allowed analysis of the entire Rio de Janeiro metropolitan area using a single package. Using the Aimsun embedded importer, Modelle imported the entire city network and matrices from the previous traffic demand software (TransCAD) and completed all the follow-up analyses.
Modelle calibrated the traffic network and adjusted the O/D matrices, using data from traffic surveys to obtain the volume of vehicles and their modal classification and using over 50 different important road network points in Rio de Janeiro city in AM and PM peak times.
After calibrating the entire macro area, sub-areas requiring more detailed information were extracted using Aimsun’s Traversal Matrix Generation tool. Using the same macro network as a base to ensure consistency, Modelle used meso, micro and hybrid simulation to analyse the Public Transport exclusive lanes, special priority lanes for the Olympic Family and the impact on general vehicles.
The efficiency of Aimsun models permitted the analysis of the impact of some specific Olympic Games strategies on traffic throughout Rio de Janeiro, especially in areas where the general city traffic demand is already above capacity. Aimsun allowed the consultants to preview the impact of the reserved lanes for the Olympic Family and to preview the travel time of these for some major routes.
Aimsun was able to analyze the possibility of sharing the Olympic Games’ reserved lanes with the BRT and other PT vehicles and showed the real impact of these new reserved lanes on the mixed traffic.
The reserved lanes would consume an average of 30% of the capacity of the sections that the Olympic Family would use. The study confirmed that it would be possible to share these lanes with BRT, since the microsimulations showed that the capacity of the BRT reserved lanes is sufficient for both. There was a much greater impact on the general traffic in areas that did not originally have BRT lanes, so Modelle ran trials taking into account any holidays that would reduce general traffic by at least 20% on the days of the Olympic Games.