The Road Glide Limited Harley offered us came loaded with the RDRS package (but it's included on all new CVOs), and by the end of our ride we'd experienced a good chunk of its capabilities. The traction control was especially welcomed as we wove around the dirty corners and twisty roads of Southern California's high desert. 900-plus pounds of Milwaukee motorcycle can be a handful in any condition, much less a high-speed run along windy, off-camber back roads, and we were happy to have the extra electronics reining in wheel slip as we alternated between hard stops and even harder acceleration. Even when I was mashing on the brakes in tight corners, the clever Bosch six-axis IMU (inertial measurement unit) kept sending all the right pitch, roll, and acceleration data to the bike's ECU, helping to keep me shiny side up. RDRS, the traction-control part of the system has three selectable modes: Standard, Rain, and Off (you know, for burnouts). Like the ABS, the traction control uses sensors for modulation when you're cornering.