WEST PALM BEACH, Fla. -- The Florida Highway Patrol issued a report Friday defending its actions surrounding a chain of fatal crashes on a fog-choked roadway, suggesting that unpredictable weather and motorist failures made it unlikely that any amount of planning or policy changes could have prevented the 11 deaths.

The patrol rejected many of the findings of an April report by another state agency, the Florida Department of Law Enforcement, which found errors but not criminal violations were made in decisions leading to the Jan. 29 wrecks that killed 11 people along Interstate 75 near Gainesville. FHP laid significant blame on drivers themselves, not law enforcement.

"Even if each of the recommendations made by the FDLE in its incident review were to have been present or occurred that night, it is probable the same decision would have been reached," the report states. "Also, no amount of planning or policy will take the place of driver reaction to low visibility and unpredictable conditions."

FHP and FDLE are separate state agencies that do not report to one another. FHP's report offers a point-by-point rejection of the earlier FDLE report on the crashes. Among its findings:

_ FDLE said FHP didn't adhere to its policies on incidents involving smoke and fog, including consulting with the National Weather Service. FHP says the nearest weather service tower was about 10 miles away and wouldn't have been able to provide information on conditions better than what officers were seeing on the ground.

_ FHP "failed to effectively monitor conditions of the interstate" after its reopening, FDLE charged. The highway patrol provides an accounting of patrols, saying "The facts do not support the finding that the roadway was not monitored."

_ FDLE noted a lack of signage, including electronic message boards, prevented broadcasting of updates to motorists. FHP responded that the Department of Transportation is responsible for signage.

_ FHP also notes that the FDLE report does not address driver behavior, saying some drivers did not reduce their speeds, causing collisions with vehicles that had slowed or stopped. The report also says drug and alcohol use was confirmed on the part of several motorists. A review by The Gainesville Sun of other investigative reports released Friday showed two drivers involved in crashes were charged with drunken driving, but were not responsible for any deaths or serious injuries.

An FDLE spokeswoman did not immediately respond to the latest report.

Lt. Col. Ernie Duarte of FHP declined to elaborate on the report's findings, saying "It's comprehensive, it's transparent and we're allowing it to speak for itself."

The patrol's parent agency, the Department of Highway Safety and Motor Vehicles, said Tuesday that it has received 13 lawsuit notices from people who either were injured in the crashes or had family members killed.

The early-morning crashes came in an unlit stretch of road where wildfire smoke mixed with fog. The road had been closed due to visibility, and a highway patrol officer suggested it remain closed, but a superior overruled him. Within a half-hour of its reopening, the first of six separate fatal crashes began, involving at least a dozen cars, pickup trucks and a van, six semitrailer trucks and a motorhome. Some vehicles burst into flames, making it difficult to identify the dead. Eighteen other victims were hospitalized.

Earlier on HuffPost:

Loading Slideshow...
  • Fatal Wreck

    Officials work at the scene of a multi-vehicle wreck on Interstate 75 at Paynes Prairie on Sunday, Jan. 29, 2012, south of Gainesville, Fla. (AP Photo/The Gainesville Sun, Matt Stamey)

  • Wreck on I-75 involving multiple vehicles

    Officials work at the scene of a multi-vehicle wreck on Interstate 75 at Paynes Prairie on Sunday, Jan. 29, 2012, south of Gainesville, Fla. (AP Photo/The Gainesville Sun, Matt Stamey)

  • Fatal Wreck

    Officials work at the scene of a multi-vehicle wreck on Interstate 75 at Paynes Prairie on Sunday, Jan. 29, 2012, south of Gainesville, Fla. (AP Photo/Matt Stamey, The Gainesville Sun)

  • Fatal Wreck

    Officials work at the scene of a multi-vehicle wreck on Interstate 75 at Paynes Prairie on Sunday, Jan. 29, 2012, south of Gainesville, Fla. (AP Photo/The Gainesville Sun, Matt Stamey)

  • Fatal Wreck

    Officials work at the scene of a multi-vehicle wreck on Interstate 75 at Paynes Prairie on Sunday, Jan. 29, 2012, south of Gainesville, Fla. (AP Photo/The Gainesville Sun, Matt Stamey)

  • Emergency crews work the scene after a crash along Interstate 75 that involved about 30 cars during snowy conditions Monday, Jan. 2, 2012 near Dry Ridge, Ky. No life-threatening injuries were reported. The road reopened around 3 p.m. on Monday after being shut down for about three hours from the pileup. (AP Photo/The Cincinnati Enquirer, Patrick Reddy) MANDATORY CREDIT; NO SALES

  • Aerial view of Interstate 75 in Gainesville, Fla. where according to Florida Highway Patrol at least 9 people have died as a result of multiple crashes Sunday, Jan. 29, 2012 involving 4 commercial vehicles and at least 10 passenger vehicles. The majority of the accidents happened in an area adjacent to where a brush fire was burning and producing heavy smoke. (AP Photo/The Gainesville Sun, Rob C. Witzel)

  • Firemen

    Firemen spray foam on a truck that was part of a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla., Sunday, Jan. 29, 2012. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP Photo/Phil Sandlin)

  • Accident Aftermath

    Wrecked vehicles sit along the road at the scene of a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla., Sunday, Jan. 29, 2012. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP Photo/Phil Sandlin)

  • Vehicle in Accident

    A small passenger vehicle sits lodged beneath a semitrailer after a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla., Sunday, Jan. 29, 2012. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP Photo/Phil Sandlin)

  • Firemen

    Firemen watch as cleanup crews work on vehicles that were involved in a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla., Sunday, Jan. 29, 2012. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP Photo/Phil Sandlin)

  • Firemen

    At left, firemen rest after fighting fires that resulted from a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla., Sunday, Jan. 29, 2012. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP Photo/Phil Sandlin)

  • Wrecked Vehicle

    A fireman sprays the interior of a burned vehicle that was involved in a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla., Sunday, Jan. 29, 2012. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP Photo/Phil Sandlin)

  • FILE - In this Jan. 29, 2012, file photo, debris and wreckage lie along the highway after a multi-vehicle accident on Interstate 75 near Gainesville, Fla. The Florida Highway Patrol is releasing a report on the fog- and smoke-shrouded Interstate 75 crash that killed 11 people in January. The inspector general's report on whether state troopers erred when they reopened the highway shortly before the massive pileup is due out Thursday, April 26, 2012. (AP Photo/Phil Sandlin, File)

  • FILE - In this Jan. 29, 2012, file photo, Florida Highway Patrolmen inspect the damage from a multi-vehicle accident on Interstate 75 near Gainesville, Fla. The Florida Highway Patrol is releasing a report on the fog- and smoke-shrouded Interstate 75 crash that killed 11 people in January. The inspector general's report on whether state troopers erred when they reopened the highway shortly before the massive pileup is due out Thursday, April 26, 2012. (AP Photo/Phil Sandlin, File)

  • Wreck on I-75 involving multiple vehicles

    Smoke from burning trailers at the scene of a multi-vehicle wreck on Interstate 75 at Paynes Prairie on Sunday, Jan. 29, 2012, south of Gainesville, Fla. (AP Photo/The Gainesville Sun, Matt Stamey)

  • Emergency crews work the scene after a crash along Interstate 75 that involved about 30 cars during snowy conditions Monday, Jan. 2, 2011 near Dry Ridge, Ky. No life-threatening injuries were reported. The road reopened around 3 p.m. on Monday after being shut down for about three hours from the pileup. (AP Photo/The Cincinnati Enquirer, Patrick Reddy) MANDATORY CREDIT; NO SALES

  • Douglas Sage, of Dry Ridge, foreground by overturned vehicle, looks for his cell phone which he lost while trying to help people who were in the vehicle, after a crash along Interstate 75 that involved about 30 cars during snowy conditions Monday, Jan. 2, 2011 near Dry Ridge, Ky. No life-threatening injuries were reported. The road reopened around 3 p.m. on Monday after being shut down for about three hours from the pileup. (AP Photo/The Cincinnati Enquirer, Patrick Reddy) MANDATORY CREDIT; NO SALES

  • Igreja da Restauracao Restoration Church member Lucimar Green weeps while the Brazilian deputy consul general from Atlanta speaks to the church in Marietta, Ga. on Tuesday, Jan. 31, 2012. Five members of the church were killed in Sunday's fiery multi vehicle crash on a darkened stretch of I-75 in Florida and church members are still looking for answers and assistance. (AP Photo/Atlanta Journal & Constitution, Curtis Compton) MARIETTA DAILY OUT; GWINNETT DAILY POST OUT

  • In this undated photo released by the International Church of the Restoration in Marietta, Ga., The Carmo family, Adriana, Leticia, 17, Jose Jr. and Lidiane, 15, pose at the church in Marietta, Ga. Florida Highway Patrol spokesman Lt. Patrick Riordan confirmed Jose Carmo Jr., Adriana Carmo, Leticia Carmo and Edson Carmo, not shown in picture, as victims in the Sunday crash on Florida's Interstate 75 that killed 10 people. (AP Photo/International Church of the Restoration)

  • Church member Barbara Almeida grieves next to a family photo of pastor Jose Carmo and his wife Adriana Carmo in the hallway of the Carmo family home in Kennesaw, Ga. on on Monday, Jan. 30, 2012. Carmo Jr. 43; his wife, Adrianna, 39; and their daughter, Leticia, 17, died in the early Sunday morning crash, authorities and church officials said. The Florida Highway Patrol said the Carmos were traveling in a 2012 Dodge Caravan that was headed northbound on Interstate 75 near Gainesville with nine other vehicles that crashed when they encountered heavy smoke that was hard to see through. (AP Photo/Atlanta Journal & Constitution, Curtis Compton ) MARIETTA DAILY OUT; GWINNETT DAILY POST OUT MBO (REV-SHARE)

  • The children of Edson Carmo, Jessica and Jefferson Carmo, from left, wreck survivor Joilson Lima, and Fabio Souza bow in prayer while members lift their hands for healing as the small Restoration Church in Marietta, Ga. works to pick up the pieces on Sunday, Feb. 5, 2012 after five of its members were killed in a Florida highway crash last Sunday. The Brazilian church is faced with caring for survivors, including 15-year-old Lidiane Carmo who lost her immediate family. Fabio Souza is the uncle of Lidiane Carmo and told the congregation he and his wife were adopting the child. The Edson children survive their father, Edson Carmo, who died in the crash. At least 10 people died in the massive pileup on a darkened stretch of I-75 in Florida. (AP Photo/Atlanta Journal & Constitution, Curtis Compton) MARIETTA DAILY OUT; GWINNETT DAILY POST OUT

  • Church member Sueli Reis sheds a tear as she embraces Jefferson Carmo, 13, left, a surviving child of Edson Carmo, at the small Restoration Church in Marietta on Sunday, Feb. 5, 2012, after five of its members were killed in a Florida highway crash. The Brazilian church is now faced with caring for survivors. Eleven people died in the massive pileup on a darkened stretch of I-75 in Florida. (AP Photo/Atlanta Journal & Constitution, Curtis Compton) MARIETTA DAILY OUT; GWINNETT DAILY POST OUT

  • In a tearful reunion, crash survivors Weberson Barbosa, left, and Joilson Lima, right, embrace upon seeing each other again at the small Restoration Church in Marietta, Ga. on Sunday, Feb. 5, 2012, after five of its members were killed in a Florida highway accident. The Brazilian church is faced with caring for survivors, including 15-year-old Lidiane Carmo who lost her immediate family. Eleven people died in the massive pileup on a darkened stretch of I-75 in Florida. (AP Photo/Atlanta Journal & Constitution, Curtis Compton) MARIETTA DAILY OUT; GWINNETT DAILY POST OUT

  • FILE - In this Feb. 1, 2012 file photo, Sprayberry High School students Douniana Safar, from left, Fabii Oconitrillo, and Marissa Williams weep as they lift their candles toward the sky while hundreds of classmates gather at the school to hold a vigil for Leticia Carmo, 17, a junior who was killed in a fiery crash in Florida on Interstate 75, on a darkened stretch of road with her parents and two other Restoration Church members, on Jan. 29. Leticia's sister, freshman Lidiane Carmo, 15, is the only survivor in the family. At least 10 people died in the crash. At right is a family photo of Leticia Carmo with her parents Jose and Adriana Carmo. (AP Photo/Atlanta Journal-Constitution, Curtis Compton, File) MARIETTA DAILY OUT; GWINNETT DAILY POST OUT