Yes, it can. There are other consideration for slower speeds (in TDP called something like "slow speed order") in development, e.g. in hazard areas, for instance high wind speed or flooding (very heavy rain). So sometime you may get a weather report/advisory for areas of your territory you have to act upon. We already have slow speed order due to track deterioration But all that is imposed due to external impact, not just to keep traffic smooth and save energy. We will consider that.
