WASHINGTON – A young man talking on a cellphone meanders along the edge of a lonely train platform at night. Suddenly he stumbles, loses his balance and pitches over the side, landing headfirst on the tracks.

Fortunately there are no trains approaching the Philadelphia-area station at that moment, because it takes the man several minutes to recover enough to climb out of danger.

But the accident, captured last year by a security camera, underscores the risks of what government officials and safety experts say is a growing problem: distracted walking.

On city streets, in suburban parking lots and in shopping centers, there is usually someone strolling while talking on a phone, texting with his head down, listening to music or playing a video game. The problem isn’t as widely discussed as distracted driving, but the danger is real.

Reports of injuries to distracted walkers treated at hospital emergency rooms have more than quadrupled in the past seven years and are almost certainly underreported. There has been a spike in pedestrians killed and injured in traffic accidents, but there is no reliable data on how many were distracted by electronics.

“We are where we were with cellphone use in cars 10 years or so ago. We knew it was a problem, but we didn’t have the data,” said Jonathan Akins, deputy executive director of the Governors Highway Safety Association. State and local officials are struggling to figure out how to respond, and in some cases asking how far government should go in trying to protect people from themselves.

In Delaware, highway safety officials opted for a public education campaign, placing decals on crosswalks and sidewalks at busy intersections urging pedestrians to “Look up. Drivers aren’t always looking out for you.”

Philadelphia officials are drafting a safety campaign that will be aimed in part at pedestrians who are looking at their devices instead of where they’re going. “One of the messages will certainly be ‘pick your head up’ – I want to say ‘nitwit,’ but I probably shouldn’t call them names,” said Rina Cutler, deputy mayor for transportation and public utilities.

As an April Fools’ Day joke with a serious message, Philadelphia officials taped off an “e-lane” for distracted pedestrians on a sidewalk outside downtown office buildings. Some didn’t get that it was a joke.

“The sad part is we had people who, once they realized we were going to take the e-lane away, got mad because they thought it was really helpful to not have people get in their way while they were walking and texting,” Cutler said.

The Southeastern Pennsylvania Transportation Authority, which provided the video of the man who fell onto the train tracks, has received reports from bus drivers and train engineers who say they nearly hit pedestrians who didn’t appear to hear them sound their horns because they were distracted by their electronic devices, said Jim Fox, the agency’s director of system safety and risk management.

A University of Maryland study found 116 cases over six years in which pedestrians were killed or seriously injured while wearing headphones. In two-thirds of the cases the victims were men under age 30. Half the cases involved trains. In a third of the incidents, a warning horn was sounded just before the accident.

“With the smartphone technology these days and everything at your fingertips, it’s almost getting to be an obsession or a compulsion with people,” Fox said. “You see it in airports or train stations or malls – if there’s any kind of downtime, they’re jumping right to that phone.”

About 1,152 people were treated in hospital emergency rooms in the U.S. last year for injuries suffered while walking and using a cellphone or some other electronic device, according to the Consumer Product Safety Commission, which receives annual data from 100 emergency rooms and extrapolates the information into a national estimate.