b'10815 MILES IN M I A M INo matter the weather, the hour, or the day, theres no such thing as a typical drive in South Florida. Argo AIs test specialistsin Miami come from all backgroundssimulations (see the testing cycle on page 104). These occurrences ex-and walks of life, but on this they agree: their city is one tough place topose the self-driving system to a broad range of behaviors and environ-drive. Which is exactly why the company chose Miami as one of its test- ments that teach it how to respond safely, and naturally, to what it may ing cities. The same things that may be a nuisance for driversspeedingencounter on the road. cars, unpredictable pedestrians, illegal U-turns, and other random, andHere, test manager Christian Rivero and software engineer Johannes sometimes comical, road encounters (see What Happens in Miami,Strom explain some of the notable happenings that occurred during one opposite)are a boon for the Argo SDS and its developers.45-minute, 15-mile drive around South Beach in the fall of 2020. Despite Every time the system encounters something unusual or unexpected,the range of noncompliance witnessed, test specialists never needed to dis-a test specialist logs the scene, and shares it with a team of data analysts,engage the vehicle from autonomous mode, a testament to the confidence who in turn refer the data to development teams to be incorporated intolevel of the Argo SDS its ability to naturally handle complex situations.12:24 PM 12:29 12:3212:33While the test vehicle is in the right lane,Semi-occlusions limit the systems ability toWithout decelerating, the test vehicle movesA pedestrian cuts across the street 10 to another vehicle merges into the left laneget good sightlines on all road actors, makingslightly into the adjacent lane to give room15 feet ahead of the test vehicle and the car of traffic heading in the same direction asit more difficult to predict their future behavior.to a parked car jutting out of a parking spot.stops, making sure that it allows plenty of the test vehicle. The other car acceleratesIn order to drive like a human, the systemIt then returns to the right lane immediatelyroom for the person to cross (which they do, through the turn, and the test vehicle slowsneeds to leverage as much information asafter passing the parked car. Two minutesafter walking down the street and crossing momentarily to maintain a safe distance.possible: what it sees, what it knows aboutlater, the test vehicle passes center-lanebehind the vehicle). Four minutes later, the test In addition to tracking the car merging intoits environment from its 3D map, and whatconstruction on its left side and maintains itsvehicles cameras detect another pedestrian traffic, the vehicle is considering thousands ofits prediction engine can forecast. Here, thespeed and bearing. These two instances showon the edge of the roadway who is walking in other scenarios for all the actors on the roadvehicle merges into traffic from the right withthe SDS handling similar situations in slightlythe road next to parked cars. The vehicle slows around it, says Strom. It considers, but doesother cars moving along at about 30 mph anddifferent ways, replicating the way a humandown to make sure the pedestrian does not not react to, most of these other vehicles,accelerates to assimilate smoothly. driver reacts with nuance to different roadjump out into the flow of traffic. Two minutes while reacting appropriately to the one thatconditions. after that, the vehicle spots another pedestrian, warrants a response. this time to its left. The vehicle stops to see if the pedestrian is going to cut out in front of it. When the pedestrian passes, the system slowly accelerates again.FullBook_Mar24.indb 108 4/25/21 6:44 PM'