Turns
Time Based Turn Restrictions (TBTRs) are used when certain turns are partially restricted from one segment to another. If the turn is always restricted for all vehicles then use a red turn restriction; TBTRs are not to be set to 24/7 for all vehicles. TBTRs are used to only restrict certain hours, days, dates, and/or certain vehicle types.
Turn restrictions
Turns are set up for traffic flow or restricting traffic are set with turn arrows—the arrows that appear at the end of a selected segment. A restricted turn is indicated by a red arrow with a red do not sign next to it (upper left arrow in picture below). A partially restricted turn (TBTR) is indicated by the yellow arrow (lower right arrow in picture below). A turn that is open (not restricted) to all traffic is indicated by a green arrow. For two way segments, there are u-turn arrows that follow the same color indications. Hover over either a green or yellow arrow and a grey box pops up with that particular turn's turn instruction override selection, the turn restriction selection, and the difficult turn attribute selection (upper right arrow in the picture below). Above the grey box is a label for turn to name of segment (if named) or "no street" (if unnamed).
Scheduled turn restrictions
When not all times, days, dates, or vehicles are restricted from turning, you can set a scheduled turn restriction from one segment to another. Turns that are restricted to traffic during certain periods are "time based turn restrictions".
