Officers were tracking cars along several points on a given stretch of road to check if their average speed exceeded the permissible limit.
Police were expected to pay special attention to sites where accidents due to excessive speed occur most often, Robert Opas from the National Police Headquarters told reporters.
He urged motorists to slow down when approaching pedestrian crossings, bicycle paths and intersections.
Unmarked vehicles from a police unit called SPEED were also hunting for rule breakers, state news agency PAP reported.
Police have said the main cause of fatal road accidents caused by drivers in Poland is motorists failing to adapt their speed to traffic conditions.
A total of 2,233 people were killed and 26,413 injured in 22,802 accidents on Polish roads last year, according to preliminary police figures released earlier this year.
At the start of 2022, stricter traffic rules took effect in the country with tougher fines for drivers as part of efforts to improve road safety.
Under the new rules, the maximum fine for traffic offenses went up from PLN 5,000 (EUR 1,045, USD 1,050) to PLN 30,000 (EUR 6,250, USD 6,300) as of January 1.
Meanwhile, drivers failing to respect pedestrians at crosswalks now face a fine of no less than PLN 3,000.
Those breaking the speed limit by more than 30 kph are subject to a minimum fine of PLN 800.
Using a mobile phone while driving carries a fine of PLN 500.
Under rules that took effect in the country in May last year, drivers have to give priority to people about to step out onto a pedestrian crossing, as well as those already on it.
(gs)
Source: IAR, PAP, polskieradio24.pl