 Within the Metropolitan Police Service (MPS) general and specialist Road Policing Unit functions are the remit of the Traffic Operational Command Unit (SCO15).The MPS does have a separate unit called the "Road Policing Unit" within the Safer Transport Command, externally funded by Transport for London (TfL), whose role is to minimise traffic congestion issues and smooth traffic flow across the capital, particularly on bus routes and the TfL Road Network.The North West Motorway Police Group (NWMPG) was formed in 2008 after the success of the CMPG.