The traffic jam was caused by an accident between an Israeli and Palestinian car between the Hizme and Adam junctions, northeast of Jerusalem. Several Jews and Arabs were injured in the accident, which occurred at 6 PM on Friday evening, and police forces arrived on the scene soon afterwards.
By 7 PM, when Shabbat was coming in, traffic was at a near standstill, catching many drivers on their way home before sundown. As driving on the Shabbat is forbidden by Torah law, many Jewish drivers parked their cars on the side of the road, took their belongings, and walked, some of them more than a kilometer, until they reached the Jewish town of Adam. Some even continued to the towns of Pesagot and Kochav Yaakov, which are several kilometers further down the road."