"Police roadblocks" refers to a situation where the police set up barriers on roads to stop vehicles for various reasons, such as checking licenses, ensuring road safety, or seeking information about crimes. Full definition
«Cars adorned with them are not stopped by police roadblocks or firebombed by paramilitary saboteurs. (redeeminggod.com)
After our unintended arrival during a Carnival Parade, they helped us get through police roadblocks and even provided us with a much needed cold beer upon arrival. (fieryfoodscentral.com)
Blocks from the party the police were setting up a Counter-Attack police roadblock. (yourlegalbutler.com)