Whether traveling by road, rail or air, Saturday’s nor’easter is taking its toll on those who have no choice but to travel, confronting them with cancellations, delays and closed lanes due to crashes, downed poles and flooded highways across the state. As of 11:30 a.m., State Police responded to 178 crashes and 479 calls for motorist aid on highways and towns patrolled by troopers, said State Police Trooper Charles Marchan. “We urge residents to remain off of the roads unless you absolutely have to go out,” he said. “Road crews have been out nonstop doing as best they can to keep the roads cle…