Visiting sister, went and arrived with a progress check (5,6)
I believe the answer is:
speed camera
'progress check' is the definition.
(device checking the progress of a vehicle)
'visiting sister went and arrived with a' is the wordplay.
'visiting' indicates putting letters inside.
'sister' becomes 'sr' (abbreviation as in names of nuns).
'went' becomes 'peed' (both can mean urinated).
'and' means one lot of letters go next to another.
'arrived with' becomes 'came' ('come' can be a synonym of 'arrive'. I am not sure about the 'with' bit.).
'peed'+'came'='peedcame'
'sr' placed around 'peedcame' is 'speedcamer'.
'speedcamer'+'a'='SPEED CAMERA'
(Other definitions for speed camera that I've seen before include "this could bring about a fine result" , "Road safety device" , "Roadside picture taker" , "Roadside detector" , "Roadside enforcer" .)