[boemeles]

In addition to Andre:
NOTE! this is not made by me, i dont take any credits!

use this in your script:

pawn Code:

if(!IsPlayerInInvalidNosVehicle(playerid, vehicleid) //notice the "!"

pawn Code:

//----------[ IsPlayerInValidNosVehicle made by [fackin']luke]---------------------
IsPlayerInInvalidNosVehicle(playerid,vehicleid)
{
  #define MAX_INVALID_NOS_VEHICLES 29

  new InvalidNosVehicles[MAX_INVALID_NOS_VEHICLES] =
  {
    581,523,462,521,463,522,461,448,468,586,
    509,481,510,472,473,493,595,484,430,453,
    452,446,454,590,569,537,538,570,449
  };

  vehicleid = GetPlayerVehicleID(playerid);

  if(IsPlayerInVehicle(playerid,vehicleid))
  {
        for(new i = 0; i < MAX_INVALID_NOS_VEHICLES; i++)
        {
          if(GetVehicleModel(vehicleid) == InvalidNosVehicles[i])
          {
            return true;
          }
        }
  }
  return false;
}
// end of it!