Comment 12 for bug 1535115

AI now can remove roads, when both flags are empty and alternative road is not that long. Generally it is not so big proglem remove also reads that are too busy. Only the problem is to find out it is busy. I dont like idea to keep list of wares on flag in AI and compare it periodically, it is too much overhead. And it is basically mimicking what flag is already doing.

 I would prefer if flags have some timer like last_time_ware_left, and then number of wares + this information + the fact whether there is a warehouse in economy would give reliable info if the transportation is stuck.... Then AI would dismantle such road.

Also this info could be used for possible 'traffic jam map', if there was an interest for this stuff.

But I still believe, there stopping some production sites would generally improve the situation. But this will not be done before build 19 probably.