Plymouth City Council is being asked on Tuesday to bring in another dispersal order to deal with violent crime.
Dispersal zones allow police to break up groups of people where officers think there is potential for violence.
A previous city centre dispersal order over the festive season led to a big reduction in crime.
Now police want a six month dispersal order to start on Friday and run until early summer, covering the city centre, Union Street and the Barbican.
Police used powers of dispersal 112 times and six people were arrested for refusing to move on during the last order which ran from 12 November until 4 January.
Police say that, compared with the same period the previous year, there was a 47% reduction in common assault, a 24% drop in actual bodily harm, and grievous bodily harm was down by 83%.
Other dispersal areas are in place around Plymouth Argyle Football Club's Home Park stadium on match days and in parts of Plympton and Plymstock.