People Who Suffer Depression And Anxiety After A Traumatic Brain Injury May Have Damaged White Matter. Jun 16, 2015 12:00 AM By Ed Cara @EdCara4. Researchers from the University at Pittsburgh Medical Center may have figured out why people suffer depression and anxiety after a concussion.
How to Read Speed Rating, Load Index & Service Descriptions. Using a P195/60R15 87S tire size as our example, the 87S at the end of the size represents the tire's service description. A service description identifies the tire's load index and speed rating.
This assumption leads to the theory of. â85th percentile speed,â defined as the speed. 85% of drivers are moving at or below. Many studies have shown that despite the posted. speed limit on a given section of road, most. drivers tend to travel at a speed that is comfort-. able relative to roadway conditions and, at that. speed, the least amount of congestion and. crashes will occur.