SIOUX FALLS, S.D. — The 14-year-old was riding an electric bicycle at an estimated 25 mph when he slammed into Janet Stotko during her evening walk, leaving her unconscious and bleeding on a sidewalk in her Minnesota neighborhood.
The 2024 crash nearly killed Stotko, who was raced to a hospital with severe brain injuries, a facial fracture and broken eardrum. But after being on a ventilator for two days, spending three weeks in the hospital and enduring brain surgery, she survived, surprising even her doctors.
At a checkup, she said, her doctors told her, “Wow, we can’t believe you’re here.”
Now, she’s pushing for stricter laws regulating e-bikes in hopes that others won’t be hurt.
E-bikes offer a convenient, eco-friendly and cost-effective alternative to cars, but their increasing use is drawing safety concerns. A study by the University of California, San Francisco found that rider injuries from e-bikes nearly doubled each year from 2017 to 2022, and a University of California, San Diego study showed injuries in San Diego among e-bike riders under 18 soared 300% from 2019 to 2023.
Under federal law, most e-bikes are considered nonmotorized vehicles just like traditional bicycles, so riders don’t need a driver’s license or insurance and they don’t have to wear a helmet. But many states have more stringent rules, and regulations vary widely.
Health experts have called for new laws and better enforcement of existing regulations, and officials in many places are taking action.
Here’s what e-bikers should know to keep themselves and people around them safe.
Not all e-bikes are the same
Many states have adopted a three-tier classification of e-bikes: Class 1 have motors that kick in while riders pedal with maximum speeds of 20 mph; Class 2 have throttles that reach the 20 mph maximum without pedaling; and Class 3 provide pedal-assist up to 28 mph.
There are faster versions available, sometimes called e-motos, that can reach 40 mph even without pedaling. Many states treat these bikes like motorcycles, so they’re not allowed on sidewalks or paths, but in some states there are no specific rules for the ultra-fast bikes.
As John Maa, a general surgeon at MarinHealth Medical Center in Northern California, notes, it’s basic math that increased speeds lead to increased injuries.
“It’s Newton’s principles, right? Force equals mass times acceleration, and also kinetic energy is mass times velocity squared,” Maa said.
Learn where you can and can’t ride
Speed limits, helmet requirements and other rules for e-bikes are changing rapidly, and what’s legal in one city or state might be illegal in the next.
New York City imposed a speed limit of 15 mph on all electric bikes in October, and Florida lawmakers recently sent the governor a bill limiting e-bike speeds to 10 mph within 50 feet of pedestrians. In Connecticut, an October law requires all e-bike riders to wear a helmet, and bikes without pedals equipped with batteries over 750 watts will require a driver’s license.
“We were not only hearing from manufacturers and riders, but we were hearing from concerned citizens trying to share the road with these new electric bikes and e-scooters, and also law enforcement who really needed some clear policies set into place,” said Christine Cohen, the Connecticut state senator behind the legislation.
Know your bike
The market is full of vehicles that blur the line between a traditional e-bike and something closer to a motorcycle, and manufacturers don’t always make the distinction easy to spot.
To understand a bike’s capabilities and where it can be legally ridden, check its top speed, motor wattage, and whether it requires pedaling or operates on throttle alone. Anything outside the three-class classification could be subject to motor vehicle regulations, making it illegal to ride on some shared-use paths where slower e-bikes are allowed.
“The first thing we always tell people is familiarize yourself, read the manual, look at some videos, look at your specific model,” said Charles DiMaggio, an injury public health researcher and professor at New York University’s medical school.
