 Traffic Officers receive the same training as non-traffic officers in public order duties but are trained to a much higher standard in automobile control.The Central Motorway Police Group (CMPG) was formed in 1990 with a partnership of West Midlands Police and West Mercia Constabulary.Staffordshire Police and Warwickshire Police used to be part of the CMPG, but as they have formed a strategic alliance with West Mercia Constabulary, Warwickshire Police saw it as an unnecessary use of limited resources.