@Override
public void handleEvent(VehicleEntersTrafficEvent event) {
// save drivers
vehicleToDriver.put(event.getVehicleId(), event.getPersonId());
if (!eventsByPerson.containsKey(event.getPersonId())) {
eventsByPerson.put(event.getPersonId(), new LinkedList<Event>());
}
eventsByPerson.get(event.getPersonId()).add(event);
allEvents.add(event);
}
