One good example I can think of is if there is a no-right-turn-on-red combined with an unusually long red light. These are common in intersections with 4 green-left-turn arrows.
A knowledgeable driver might know to make a right turn at an earlier intersection, whereas the navigation apps do not always account for this.
A knowledgeable driver might know to make a right turn at an earlier intersection, whereas the navigation apps do not always account for this.