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SIMULATION REPORT Page 51 of 106 overtaking lane is available, private vehicles can only stay in the lane where the PT vehicle is, following the vehicle itself. Similarly, in the case of central tram boarder, the drivers that follow the PT vehicle must slow down their speed and look for a suitable gap to change lane and overtake the tram. In this case, some attention has to be paid to the passengers that are leaving the tram and that could cross the lane where private traffic is flowing. For the layby stops, when the PT vehicle reaches the stop, it leaves the lane on the carriageway and private traffic can flow normally on the lane. Later, the PT vehicle must look for a suitable gap in order to leave the stop, and, if this is the case, the private vehicles should give priority to the PT vehicle that is leaving the stop Typical bus stop BUS STOP BUS CAR CAR Bus stop layby BUS STOP BUS CAR CAR Bus stop boarder BUS STOP BUS CAR CAR Central tram boarder CAR CAR CAR TRAM CAR Figure 24: The four different types of public transport stop driving on the left The micro-simulator NEMIS has been enhanced with the introduction of two different kinds of PT stops: • Typical Bus Stop : suitable for simulating typical bus stops, bus stop boarders and central tram boarder (this last assumption is true if we do not take care of pedestrians that can cross the lane next to the stop, and that can slow or stop the incoming private vehicles) • Bus Stop Layby : suitable to simulate bus stop laybys. PUBLIC May, 99
