public Trucker_VehicleTimer(playerid)
{
    new OldVehicleID = APlayerData[playerid][VehicleID];
    new NewVehicleID = GetPlayerVehicleID(playerid);
    new OldTrailerID = APlayerData[playerid][TrailerID];
    new NewTrailerID = GetVehicleTrailer(GetPlayerVehicleID(playerid));

    if (APlayerData[playerid][VehicleTimerTime] != 0)
    {
        // If VehicleID and TrailerID are still the same as when the player accepted the job
        if ((OldVehicleID == NewVehicleID) && (OldTrailerID == NewTrailerID))
            APlayerData[playerid][VehicleTimerTime] = Trucker_TimeToFailMission; // Reset the time before the mission fails
        else // One (or both) aren't still the same (player lost his trailer or vehicle)
        {
            new TimeLeft[5];
            // Reduce the time left by 1
            APlayerData[playerid][VehicleTimerTime] = APlayerData[playerid][VehicleTimerTime] - 1;
            // Convert the time left to a string for displaying
            valstr(TimeLeft, APlayerData[playerid][VehicleTimerTime]);
            // Display the time left
            GameTextForPlayer(playerid, TimeLeft, 1000, 4);
            // Send only one message to inform the player what he must do
            if (APlayerData[playerid][VehicleTimerTime] == (Trucker_TimeToFailMission - 1))
                SendClientMessage(playerid, 0xFFFFFFFF, "{FF0000}You must enter your vehicle or re-attach your trailer");
        }
    }
    else
    {
        // Time left has reached 0
        Trucker_EndJob(playerid);
        // If the player is part of a convoy, kick him from it (as he failed his mission, the rest of the convoy would be stuck)
        Convoy_Leave(playerid);
        // Inform the player that he failed the mission
        GameTextForPlayer(playerid, "~w~You ~r~failed~w~ your mission. You lost ~y~$1000~w~ to cover expenses.", 5000, 4);
        GivePlayerCash(playerid, -1000);
        KillTimer(APlayerData[playerid][VehicleTimer]);
    }
}

GameTextForPlayer(playerid, "~w~You ~r~failed~w~ your mission. You lost ~y~$1000~w~ to cover expenses.", 5000, 4);

Dialog_TruckerSelectEndLoc(playerid, response, listitem)
{
    new RouteText[128], loadName[50], startlocName[50], endlocName[50], LoadMsg[128], Float:x, Float:y, Float:z, ProductID;

    if(!response) return 1;

    ProductID = APlayerData[playerid][LoadID];
    // Store the chosen end-location in the player's account
    APlayerData[playerid][JobLoc2] = ALoads[ProductID][ToLocations][listitem];

    // Get the names for the load, startlocation and endlocation
    format(loadName, 50, "%s", ALoads[ProductID][LoadName]);
    format(startlocName, 50, "%s", ALocations[APlayerData[playerid][JobLoc1]][LocationName]);
    format(endlocName, 50, "%s", ALocations[APlayerData[playerid][JobLoc2]][LocationName]);

    // Job has started
    APlayerData[playerid][JobStarted] = true;
    // Store the vehicleID (required to be able to check if the player left his vehicle)
    APlayerData[playerid][VehicleID] = GetPlayerVehicleID(playerid);
    // Store the trailerID (required to be able to check if the player lost his trailer)
    APlayerData[playerid][TrailerID] = GetVehicleTrailer(GetPlayerVehicleID(playerid));
    // Set jobstep to 1 (going to load the goods)
    APlayerData[playerid][JobStep] = 1;
    // Combine all data into a string for the TextDraw (the player can see this all the time) to describe the mission
    format(RouteText, 255, "~w~Hauling ~b~%s~w~ from ~r~%s~w~ to %s", loadName, startlocName, endlocName);
    // Set the TextDraw so the player can see it
    TextDrawSetString(Mission[playerid], RouteText);
    // Grab the x, y, z positions for the first location
    x = ALocations[APlayerData[playerid][JobLoc1]][LocX];
    y = ALocations[APlayerData[playerid][JobLoc1]][LocY];
    z = ALocations[APlayerData[playerid][JobLoc1]][LocZ];
    // Create a checkpoint where the player should load the goods
    SetPlayerCheckpoint(playerid, x, y, z, 7);
    // Start a timer that ticks every second to see if the player is still inside his vehicle
    APlayerData[playerid][VehicleTimerTime] = Trucker_TimeToFailMission;
    APlayerData[playerid][VehicleTimer] = SetTimerEx("Trucker_VehicleTimer", 1000, true, "d" , playerid);
    // Inform the player that he must load his goods
    format(LoadMsg, 128, "{00FF00}Pickup the %s at %s", loadName, startlocName);
    SendClientMessage(playerid, 0xFFFFFFFF, LoadMsg);

    return 1;
}

public Trucker_VehicleTimer(playerid)
{
    static continueRun[MAX_PLAYERS];
    if(!continueRun[playerid])
    {
        new OldVehicleID = APlayerData[playerid][VehicleID];
        new NewVehicleID = GetPlayerVehicleID(playerid);
        new OldTrailerID = APlayerData[playerid][TrailerID];
        new NewTrailerID = GetVehicleTrailer(GetPlayerVehicleID(playerid));

        if (APlayerData[playerid][VehicleTimerTime] != 0)
        {
            // If VehicleID and TrailerID are still the same as when the player accepted the job
            if ((OldVehicleID == NewVehicleID) && (OldTrailerID == NewTrailerID))
                APlayerData[playerid][VehicleTimerTime] = Trucker_TimeToFailMission; // Reset the time before the mission fails
            else // One (or both) aren't still the same (player lost his trailer or vehicle)
            {
                new TimeLeft[5];
                // Reduce the time left by 1
                APlayerData[playerid][VehicleTimerTime] = APlayerData[playerid][VehicleTimerTime] - 1;
                // Convert the time left to a string for displaying
                valstr(TimeLeft, APlayerData[playerid][VehicleTimerTime]);
                // Display the time left
                GameTextForPlayer(playerid, TimeLeft, 1000, 4);
                // Send only one message to inform the player what he must do
                if (APlayerData[playerid][VehicleTimerTime] == (Trucker_TimeToFailMission - 1))
                    SendClientMessage(playerid, 0xFFFFFFFF, "{FF0000}You must enter your vehicle or re-attach your trailer");
            }
        }
        else
        {
            // Time left has reached 0
            Trucker_EndJob(playerid);
            // If the player is part of a convoy, kick him from it (as he failed his mission, the rest of the convoy would be stuck)
            Convoy_Leave(playerid);
            // Inform the player that he failed the mission
            GameTextForPlayer(playerid, "~w~You ~r~failed~w~ your mission. You lost ~y~$1000~w~ to cover expenses.", 5000, 4);
            GivePlayerCash(playerid, -1000);
            KillTimer(APlayerData[playerid][VehicleTimer]);
            continueRun[playerid] = 1;
        }
    }
    else
    {
        KillTimer(APlayerData[playerid][VehicleTimer]);
    }
}