Because inauguration events have been going on since the weekend, he believed many people spaced out their arrival in Washington.

"It's a lot easier if (they) trickle in," he said.

State police believe today will be the worst day for congestion as millions of people leave Washington.

"Four days to get in," Sasse said. "One day to get out. É They all want to get home."

As early as 4 a.m. Tuesday, the Capital Beltway in Prince George's County was quickly filling up with vehicles, according to the State Highway Administration. By 4:45 a.m., traffic into every Metro station was heavy. Moderate to heavy traffic was reported on all the major arteries into Washington, including I-270. Around 7 a.m., the Shady Grove Metro Station parking lot was full.

State police dealt with several crashes in the early morning hours, including single-vehicle crashes on westbound I-70 at Braddock Mountain and eastbound U.S. 340 near South Mountain.

A number of officers from the Frederick Police Department were in Washington on Tuesday to assist the Metropolitan Police Department.

All was quiet on the streets they normally patrol in Frederick , Sgt. Mike Hansell said.

The Frederick County Sheriff's Office had extra deputies out on patrol, but Capt. Troy Barrick said county roads were quiet Tuesday.

"We are fortunate that we didn't have the mass traffic problems they had in D.C.," Barrick said.

The volume of traffic in the county was that of a normal workday, he said.

State police began towing disabled vehicles found along interstates and state roads in the Baltimore-Washington corridor on Friday. As of 10 a.m. Tuesday, the Frederick barrack had towed only two, one of those because the driver had been arrested.

"The idea was to make sure we have access if traffic was backed up," Sasse said. "We want to be able to get by."

Troopers were not allowed to take off Monday, Tuesday or today, and several were sent to other barracks in the Baltimore-Washington corridor to assist with traffic, Sasse said. The Frederick barrack received additional troopers from the Cumberland barrack.

Troopers noticed an increase in the number of out-of-state license plates on Frederick County roads, among them many from the north-central part of the country, including Illinois and Michigan, Sasse said.

Trooper First Class Jeremy Hite said he noticed vehicles with license plates from Ohio and Indiana.

Sasse said Maj. Mark Sroka, the state police regional commander, told him he counted 30 charter buses on the road during his drive from Hagerstown to Frederick .

	COMPLETE INAUGURATION COVERAGE — — — — — — Using a typical school grading scale, how do you rate President Barack’s Obama’s inaugural address? A B C D F Not sure