Yesterday morning, a big rig truck collided with a UCSF shuttle van, killing 52 year-old Dr. Kevin Mack and injuring three other passengers. The accident occurred on Octavia Boulevard, which has been considered an accident hotspot for the past half decade after the Central Freeway ramp opened in 2006. The police are investigating the details of this fatal accident, and city officials have vowed to take a closer look at Octavia’s safety record and potential safety improvements.