In this Aug. 3, 2017 photo, vehicles move on North drive in front of South Dakota State Penitentiary in Sioux Falls, S.D. High speeds and heavy traffic on the road leading to the state's largest prison have Sioux Falls and the state Department of Corrections looking at ways to improve safety. The city painted a bike lane and narrowed driving lanes along North Drive this spring and will use traffic counters to judge if speeds drop enough to create safer conditions. (Briana Sanchez/The Argus Leader via AP)
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