Answer: roadblock

AnswerCrossword Clue
ROADBLOCKType of challenge in "The Amazing Race"
ROADBLOCKReason to slow down
ROADBLOCKObstruction
ROADBLOCKPart of a dragnet.
ROADBLOCKHighway police procedure.
ROADBLOCKBarricade
ROADBLOCKBarricade by police cars
ROADBLOCKDragnet operation
ROADBLOCKPolice stop
ROADBLOCKPlace for a "Bridge Out" sign
roadblockA barrier or barricade on a road, esp. one set up by the authorities to stop and examine traffic
roadblockAny hindrance
roadblocka barrier across a road / to bar by means of a roadblock