//check whether adjacent tiles are opposite
					local adjTile;
					local nextAdjTile;
					local adjRoadTiles2 = AITileList();
					adjRoadTiles2.AddList(adjRoadTiles);
					for(local t = adjRoadTiles.Begin(); adjRoadTiles.HasNext(); t = adjRoadTiles.Next()) {
					    local opposite = false;
					    for(local i = adjRoadTiles2.Begin(); adjRoadTiles2.HasNext(); i = adjRoadTiles2.Next()) {
						    if (t == i) {
							    continue;
							}
					        if((AIMap.GetTileX(t) == AIMap.GetTileX(i)) || (AIMap.GetTileY(t) == AIMap.GetTileY(i))) {
							    adjTile = t;
							    nextAdjTile = i;
							    opposite = true;
							    break;
							}
						}
						if (opposite) {
						    break;
						}
					}