By Johan Janson Olstam.
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Additional resources for A model for simulation and generation of surrounding vehicles in driving simulators
The moving window is generally wider than the area within vehicles are shown on the screens in the simulator. 2. It is important that the vehicles in the closest neighborhood of the simulator vehicle behave like real drivers. Vehicles traveling in the inner region are therefore simulated according to advanced behavioral models for carfollowing, overtaking and speed adaptation, etc. The inner area is therefore called the simulated area. The behavior of vehicles traveling further away from the simulator is less important.
When the event or situation occur the vehicles’ types, positions, and speeds must agree with those specified in the scenario. If not using stochastic simulation of the ambient vehicles, scenario scenes can be totally specified and controlled before running the scenario. This can of course be tricky but the advantage is that every vehicle movement, except the simulator vehicle, is known in beforehand. The introduction of stochastic traffic makes the generation of specific scenes even more difficult.
The desired speed can for instance depend on the road width or the curvature. Brodin and Carlsson (1986) include a presentation of a speed adaptation model in which a drivers desired speed is affected by the speed limit, the road width, and the horizontal curvature. In this model each driver is assigned a basic desired speed, which is adjusted to a desired speed for each road section. This is done by reducing the median speed according to three sub-models, one for each of the above-mentioned factors.
A model for simulation and generation of surrounding vehicles in driving simulators by Johan Janson Olstam.