For education and discussion only. Not for commercial use. The Houston area far exceeds the national average in the number of serious traffic collisions, contributing to skyrocketing medical costs and giving Harris County the most expensive auto insurance rates in Texas, according to the Associated Press. County officials said one reason drivers in Harris County are at greater risk of collisions is because the area is growing faster than roads can be improved or patrolled. Now area drivers are even crashing into the new MetroRail trains, putting Houston on course to top the national high for light rail collisions. "We...