[Konstantinos]

pawn Код:

public OnVehicleSirenStateChange(playerid, vehicleid, newstate)
{
    switch (GetVehicleModel(vehicleid))
    {
        case 415, 426, 560:
        {
            // code..
        }
    }
    return 1;
}

If the model of the vehicle is one of those three, do some stuff.