LITTLE ROCK — Law enforcement agencies will add sobriety checkpoints and beef up patrols statewide in an extended holiday crackdown on drunk driving and speeding on Arkansas roadways, state police announced Tuesday.

LITTLE ROCK — Law enforcement agencies will add sobriety checkpoints and beef up patrols statewide in an extended holiday crackdown on drunk driving and speeding on Arkansas roadways, state police announced Tuesday.

The “Drive Sober or Get Pulled Over” campaign begins Friday, includes the July 4 holiday and runs through July 7, to be followed July 8-14 by “Obey the Sign or Pay the Fine,” an initiative targeting drivers who exceed posted speed limits. Similar crackdowns in past years have typically ended with the July 4 holiday weekend.

“Traffic safety enforcement initiatives such as these are particularly important during high-volume traffic periods when more motorists are on the roads for long weekends or extended vacations,” said Col. J.R. Howard, state police director. “Speeding and impaired drivers put themselves, their passengers and other drivers at tremendous risk.”

Nearly 32,900 people died in motor vehicle crashes in the U.S. in 2010, with impaired driving a factor in 31 percent of deaths and excessive speed contributing to 32 percent, according to the National Highway Traffic Safety Administration.

Arkansas recorded 563 traffic deaths that same year, 173 or 31 percent in alcohol-related crashes and 100 or 19 percent in accidents involving speeding, the NHTS reported.

The Arkansas enforcement effort that begins Friday will involve state, city and county officers.