Furthermore, the roads were used for military transportation, giving the romans a massive strategic advantage over their less advanced adversaries through the Middle Ages, Roads continued to be built and used for trade and commerce though technological advances were virtually non existent, Though Tar-based roads were used briefly in the Arab Empire in the 8th century.
此外,道路還被用於軍事運輸,使羅馬人在中世紀對其不太先進的對手具有巨大的戰略優勢,儘管技術進步幾乎不存在,但道路仍被繼續建造並用於貿易和商業,儘管8世紀的阿拉伯帝國曾短暫使用過以瀝青為基礎的道路。