::* an obstacle
A turn can be identified as difficult by drivers
through URs or by the direct knowledge of the editor.
The time-of -day, day-of-week, etc., for the difficult turn can be set to any combination possible with a completely restricted turn noted above. Difficult turns due to traffic would typically be set to the hours and days with heavy traffic periods, while the difficult turns due to visibility would typically be set to all days.
== Setting restrictions ==