APD.SOP.4010 Traffic         Effective: 11/1/2004   Signed: 11/8/2004               APD.SOP.4020 Field Investigation Teams         Effective: 7/1/2004   Signed: 6/15/2004               APD.SOP.4030 Citizen Advisory Council         Effective: 7/1/2004   Signed: 6/15/2004               APD.SOP.4040 Special Operations Section         Effective: 7/1/2005   Signed: 5/7/2005               APD.SOP.4041 Helicopter Unit         Effective: 7/1/2004   Signed: 6/15/2004               APD.SOP.4042 Hostage Negotiators         Effective: 8/28/2004   Signed: 8/30/2004               APD.SOP.4060 School Crossing Guards         Effective: 8/16/2004   Signed: 8/18/2004               APD.SOP.4070 Bicycle Patrol         Effective: 7/1/2004   Signed: 6/15/2004