They are rarely enforced, though, because they're a waste of police manpower and only marginally effective in reducing crime.
They also execute various sentry duties and serve as a pool of reserve formations for police manpower.
By 1988-89 they had reached 3,825 million, with police manpower increased by 16,000 officers.
But crime in the housing projects will pose daunting challenges, whatever the level of police manpower.
Changes in legislation, technologies and police manpower can influence the crime figures:
For Strathmore Ridge, the additional police manpower has made a difference.
This is a waste of patrol time and police manpower.
The city contends that the planned march would strain police manpower and might jeopardize public safety.
Since the story has a happy ending, Fallon points up the effectiveness of extra police manpower and resources funded by the government.
If she made a success of the job it would mean a permanent saving in police manpower as well as a useful training for her.