Hello,
I have an idea for update command "findEmptyPosition", because this commands are not used in dense urban area, when you use this command like :
_pos = (getposATL player) findEmptyPosition [1,50,"B_Truck_01_covered_F"];

But you have one problem with this command, it's return position but don't return direction, so this command can return position, but when you create vehicle, your vehicle are inside anyobjects because of failed direction. So can add direction check when you find any position and add reutrn like

[position,direction], or something like that.

Cordially NiiRoZz