Thirteen people were killed in traffic crashes in Virginia during the Thanksgiving weekend, according to preliminary data from Virginia State Police.

The number of traffic fatalities from Wednesday through Sunday in the state this year was slightly higher than the numbers from previous Thanksgiving weekends. During the 2011 holiday weekend, there were 11 people killed in crashes, and in 2010, there were 10 traffic fatalities.

Two passengers were killed Friday in a single-vehicle crash on Interstate 66 in Fairfax County -- the only double fatality and the only fatal crash that took place on an interstate. Another local traffic fatality occurred in Loudoun County on Wednesday, when Kathleen Hwang, principal of Sanders Corner Elementary School in Ashburn, was struck by a Dodge Durango while she was crossing a road in the Lowes Island area.

Three pedestrians (including Hwang) and one motorcyclist were killed in crashes in the state over the long weekend. Five of the fatalities involved people who were not wearing seatbelts, and alcohol played a role in at least three of the crashes, police said.

Additionally, over the holiday weekend Virginia State Police cited 9,976 people for speeding, 3,099 people for reckless driving, 115 people for driving under the influence, 832 people for failing to wear a seat belt, and 280 people for not using child restraints.