2007年9月30日,历时5年的西汉高速公路建成通车,使西安至汉中的行车时间由8 h缩短为3个多h,宽阔的公路极大地方便了两地间的客货运输。然而10月8日发生的7起多辆汽车连续追尾的恶性交通事故,再次向人们敲起安全警钟。西汉高速穿行于陡峭的秦岭山脉,山高坡陡,最长超过26 km,下坡时的 On September 30, 2007, the five-year Western Han Dynasty Expressway was opened to traffic and the journey time from Xi’an to Hanzhong was shortened from 8 hours to more than 3 hours. The wide highway greatly facilitated passenger and freight transport between the two places. However, on October 8, a series of serious accidents involving seven consecutive vehicles that were rear-ended and rear-ended caused a safety alarm to people again. Western Han Dynasty high speed through the steep Qinling Mountains, steep mountains, the longest more than 26 km, downhill