@Override
 public void handleEvent(PersonEntersVehicleEvent event) {
   if (pIdsToExclude.contains(event.getPersonId())) {
     return;
   }
   if (!event.getPersonId().toString().startsWith("pt_tr"))
     if (event.getVehicleId().toString().startsWith("tr")) {
       TravellerChain chain = chains.get(event.getPersonId());
       chain.lineId = ptVehicles.get(event.getVehicleId()).lineId;
       chain.routeId = ptVehicles.get(event.getVehicleId()).routeId;
     }
 }