英语译文的英语质量是不是太差?请改正我写的错误的英文.Whenamotorizedvehiclerunsfromtheramp（是不是“匝道”?）totheexpressway,itshouldturnonandentersthecarriageway(车道)unlessitdoesnotobs

Question

英语译文的英语质量是不是太差?请改正我写的错误的英文.
When a motorized vehicle runs from the ramp （是不是“匝道”?）to the expressway,it should turn on _______ and enters the carriageway(车道) unless it does not obstruct the normal running of the motorized vehicles already on the expressway.
中文原文：“机动车从匝道驶入高速公路,应该开启左转向灯,在不妨碍已经在高速公路上正常行驶的情况下驶入车道.”

Answer 1

When a motorized vehicle runs from the ramp to the expressway,it should turn on left light and enters the carriageway(车道) unless it does not obstruct the normal running of the motorized vehicles which have already been on the expressway.