Forsyth County officials have identified an Alpharetta man who was killed in a head-on collision Friday afternoon on Dawsonville Highway.

Terry Rettig, 62, of Kimball Bridge Road in Alpharetta was killed instantly, according to Forsyth County Sheriff’s Office Traffic Specialist Investigator Ron Tomblin.

Rettig was traveling west on Dawsonville Highway in his 1981 Isuzu Pup pickup truck when it crossed the center line and collided head-on with a 2006 Peterbuilt tanker truck, Tomblin said. The wreck happened at about 2:45 p.m. at the intersection of Dawsonville Highway and Porter Lane.

The road was shut down for about 3½ hours while the wreckage was cleared. The tanker was loaded with more than 450 gallons of diesel fuel and only a small amount of diesel fuel leaked from the truck. A hazardous materials team from the Forsyth County Fire Department stood by on the scene in case the truck’s load of diesel fuel began to leak.

The driver of the tanker truck, Jerry Lamar McClure, 31, of Gainesville, was not injured. The truck is owned by Harrison Oil Co. in Gainesville.

Investigation continues to determine why Rettig’s pickup crossed the center line. Alcohol or drugs were not a factor in the wreck and no charges will be filed.