Learn about the purpose of stop signs on residential roads. Do you think stop signs slow down traffic? Who should decide where stop signs should be placed? Watch this video to see what the research says. Research referenced in this video: Richard F. Beaubein, "Controlling Speeds on Residential Streets", Institute of Transportation Engineers Journal, 1989 www.ite.org/traffic/documents/JDA89A37.pdf Minnesota Manual on Traffic Control Devices: www.dot.state.mn.us/trafficeng/publ/mutcd/index.html This video was developed by the Minnesota Local Road Research Board (LRRB). For more information about the LRRB, visit their website at www.lrrb.org