For many newer Cook County judges, serving in traffic court for three years would seem like an eternity. Not Circuit Judge Steven J. Bernstein. He has sat in traffic court since he became a judge in late 2010 and enjoys the assignment, primarily presiding over drunken-driving cases. The traffic courtrooms on the concourse level and fourth floor of the Daley Center are typically the first assignment for new judges. Bernstein, though, has declined offers to move to other divisions. “I say I will be where I …