You can drive through the whole EU - from London to KrakΓ³w - and you will see zero road police patrols on the way.
In RU you'll meet road police on every large junction in towns and every 50 km outside of towns.
And between republics you've got actual borders with bunkers, BMP, armed cops and document checks. This is from Rostov-on-Don all the way down south.
In St Peterburg as I walked from ΠΠΈΡΠΆΠ° to Π’Π°Π²ΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΠ°Π΄ I've seen minimum 3 road police patrols hunting :)