At registration for the first semester, the 1,500 students at Abraham Lincoln High School selected the primary mode of transportation each planned to use to get to school during the semester. The circle graph below shows the distribution of students who selected the various modes of transportation. Registration for the second semester followed the same procedures. The number of students remained at 1,500, but the number who selected “driving alone” increased by 50 students. What approximate fraction of the students selected “driving alone” for the second semester?