State Trooper Jesse Grabow joined me on WJON. photo - Jay Caldwell photo - Jay Caldwell loading...RoundaboutsRules in a roundabout are as follows: Everything moves to the right, once in the roundabout you are in the main route of traffic and those outside the roundabout need to yield. photo - Jay Caldwell photo - Jay Caldwell loading...Police Chase TechniquesPolice chases on roads take place on occasion. Traffic StopsGrabow says the majority of their traffic stops involving State Troopers are done (most often) with the officer approaching the passenger side of the vehicle. He says the reason for this is because the officer is more exposed to traffic if they approach the driver's side.