 And a new national study finds drivers in Des Moines are not likely to slam on the brakes. More from Dave Boll. A study from Allstate Insurance looked at safe driving trends in the top 100 most populated cities in the country. Des Moines ranked 18th overall, coming in 4th for drivers least likely to hit the brakes hard, 16th for drivers least likely to be traveling at high speeds, but 83rd out of 100 for drivers handling their phones behind the wheel. I'm Dave Boll.