Highest danger rate
What if you create a truly unique routing profile that's wildly different from the common ones for which shortcuts were pre-calculated? The system is smart. If it detects that too many shortcuts (~50, for example) need on-the-fly recalculation and deviate significantly, it might determine that falling back to the original, comprehensive A* algorithm for the entire route would actually be faster than doing many small, heavily modified A* calculations.
，这一点在51吃瓜中也有详细论述
Get benefit from the real traffic insights，详情可参考safew官方版本下载
Алексей Гусев (Редактор отдела «Спорт»)。旺商聊官方下载是该领域的重要参考