SANTIAGO DE COMPOSTELA, Spain (AP) -- Investigations into Spain's deadliest train crash in decades have only begun, but already a key question has been answered: Experts said Friday that the driver, not a computer, was responsible for applying the brakes because no "fail-safe" system has been installed on the dangerous stretch of bending track.
The question of whether the brakes failed -- or were never used -- in the approach to Santiago de Compostela may remain open until police can question the injured driver and analyze the data on the train's just-recovered "black box."
Police announced they had arrested 52-year-old Francisco Jose Garzon Amo on suspicion of reckless driving because the train hit the turn Wednesday traveling far faster than its posted 80 kph (50 mph) limit. The train's eight carriages packed with 218 passengers tumbled off the tracks into a concrete wall, and diesel fuel powering the engine sent flames coursing through some cabins.
As the first funeral ceremonies began Friday night, authorities working from a sports arena-turned-morgue announced they had positively identified 75 of the 78 people killed in the crash.
They lowered the death toll from 80 after determining that some severed body parts had wrongly been attributed to different victims. They said five of the dead came from Algeria, the Dominican Republic, Italy, Mexico and the United States.
Adif, Spain's railway agency, confirmed that a high-tech automatic braking program called the European Rail Traffic Management System was installed on most of the high-speed track leading from Madrid north to Santiago de Compostela -- but the cutting-edge coverage stops just 5 kilometers (3 miles) south of where the crash occurred, placing a greater burden on the driver to take charge.
Adif spokeswoman Maria Carmen Palao said the driver from that point on had sole control of brakes and when to use them. She said even European Rail Traffic Management technology might not have been powerful enough to stop a speeding train in time.
"Regardless of the system in place, the drivers know the speed limits. If these are respected, an accident should not take place," she said. "Whatever speed the train was traveling at, the driver knows beforehand what lies ahead. ... There's no sudden change in which a driver finds out by surprise that he has to change speed."
Gonzalo Ferre, Adif's president, said the driver should have started slowing the train 4 kilometers (2.5 miles) before the dangerous bend, which comes immediately after the trains exit a tunnel.
He said signs clearly marked this point when the driver must begin to slow "because as soon as he exits the tunnel he needs to be traveling at 80 kilometers per hour."
Spain's state-run train company, Renfe, described Amo as an experienced driver who knew the Madrid-Santiago route well. It said he had driven that train about 60 times in the past year.
"The knowledge of this line that he had to have is exhaustive," Renfe's president, Julio Gomez-Pomar, said in a TV interview.
A senior Spanish train driver, Manuel Mato, said all drivers who operate on that route know they "have to reduce the speed manually, and at this spot the drop is very sharp." He said the track south of the tunnel is straight and permits speeds of up to 200 kph (125 mph).
An American passenger, Stephen Ward, said he was watching the train's speed on a carriage display screen -- and reported that the train accelerated, not slowed, as it headed for disaster.
He said moments before the crash, the display indicated 194 kph (121 mph), more than double the speed limit, whereas earlier in the journey, he saw speeds averaging nearer 100 kph (60 mph).
Ward, an 18-year-old Mormon missionary from Utah, told The Associated Press that seconds after he saw the surprisingly high speed, "the train lifted up off the track. It was like a roller coaster." He recalled a backpack falling from the rack above him as his last memory before being knocked out.
When Ward awoke, he said someone helped him crawl out of a ditch. He thought he was dreaming until he felt his blood-drenched face and began to grasp the scene around him.
"Everyone was covered in blood. There was smoke coming up off the train," he said. "There was a lot of crying, a lot of screaming. There were plenty of dead bodies. It was quite gruesome."
On Friday, workers gradually cleaned up the disaster scene. Hundreds of onlookers watched as crews used a crane to hoist smashed and burned-up cars onto flat-bed trucks to cart them away.