RT Article T1 Is the highway patrol really tougher on out-of-state drivers? An empirical analysis JF The B.E. journal of economic analysis & policy VO 15 IS 2 SP 769 OP 796 A1 Roach, Michael LA English YR 2015 UL https://krimdok.uni-tuebingen.de/Record/1912598825 DO 10.1515/bejeap-2014-0011