The NRP stopped about 600 vehicles during R.I.D.E. programs in St. Catharines and Port Colborne.
Officers administered 26 roadside screening tests on Monday and four drivers found themselves in the warning range.
They each face a three-day licence suspension.
The officers also issued tickets for traffic related offences.
Moyer Farms Making $12M Investment
New state-of-the-art facility being built in Lincoln.
Niagara Falls Going Green for St. Patrick's Day
A beloved annual celebration throughout much of the world.
St. Catharines RIDE Campaign
One driver was nabbed for impaired operation of a motor vehicle.
Davies Challenges Gov't on EV Support
Niagara South MP told parliament of problems at 2 Niagara EV plants
Welland's Plan for Hospital Contribution
City council voting for multi-year plan to pay for its $17.8-million portion of South Niagara hospital
New GO Station Coming to Niagara
Metrolinx is working with the region to build one in Grimsby, there will be public consultation on this
Most Serious Collisions in Summer: Region
The region is working on road safety with less money due to no speed cameras
Coach Service Added to Airport
The Niagara airport working with Air Canada and Landline Company for service to Toronto