>> officer andrew barkley thought he was taking us out for a quick interview about driving in the rain. instead it turned into one emergency call after the next. >> i have one vehicle where 70 just cleared that 1183. >> three spinouts and a roof rack blowing off a car meant back-to-back traffic brakes. >> we're going to run back. >> reporter: that means slowing the traffic by weaving back and forth, giving some protection to officers and accident victims who were stopped in the middle of the freeway. >> it's nerve-wracking in the rain especially. >> it's dangerous on the best of days, but on a day like today? >> it's definitely in the top two most dangerous parts of our job. >> reporter: give yourself an extra cushion of space around your car. >> having that cushion around you to be able to maneuver if you need to to avoid a vehicle, avoid puddles, avoid debris. >> reporter: today drivers needed to avoid all three of those things on the 101 in marin marin. thanks to andrew barkley for taking us on that ride-along and our understanding after what happened today, he was only half-joking