[Josh_Main]

Try add this to every case command

pawn Code:

case 1:
                {
                    nextstop = "Airport";
                    SetPlayerCheckpoint(playerid, 1979.7369,-2171.4861,13.5363, 5.0);
                    AdvertiseToPlayersAtBusStop(1979.7369,-2171.4861,13.5363, 0);
                    if
                    (IsPlayerInRangeOfPoint(playerid, 1979.7369,-2171.4861,13.5363, 5.0)) 
                    return         
                    DisablePlayerCheckpoint(playerid);
                }