Gloucestershire Police have confirmed officers will stop vehicles suspected of driving long distances on routes into the Forest of Dean.
A 38-year-old man has also been charged with assisting an offender.
Significant delays are expected as police launch a "serious investigation"
Pc Stephen McGoldrick quit Gloucestershire Police after the "abhorrent images" were found.
The perpetrator is also suspected of posting porn through letterboxes in the middle of the night.
No-one was injured, police said.
His body was found in the early hours of Thursday.
Police have widened the search for the body of a woman murdered by her wealthy husband. They have been digging on millionaire