To ensure you receive the best service possible,
please enter your zip code below:
This article helps riders understand what makes an e-bike different from a traditional bicycle and how to choose and use one more safely.
Quick answer: What is an e-bike? An e-bike, or electric bicycle, is a bicycle with a rechargeable battery and electric motor that assists the rider while pedaling or, on some models, through a throttle. The motor can make hills, longer rides and commuting easier, but riders should understand the bike’s class, assisted speed, handling and local rules before riding.
Know your ride before you roll. AAA’s E-Ride Ready Guide can help riders understand e-bike classes, choose safety gear and build safer riding habits.
Get Free GuideE-bikes, short for electric bicycles, have become an increasingly popular way to commute, explore and get around. They offer many of the benefits of traditional bicycles, but an electric motor can help riders travel farther, accelerate faster, and reach higher speeds with less effort.
That added power also changes the riding experience. Understanding how e-bikes work, how fast they can travel, and the safety considerations that come with them can help riders choose and operate an e-bike safely.
So, what exactly is an e-bike, and how is it different from a regular bike?
An e-bike is a bicycle equipped with an electric motor that assists the rider while pedaling or, in some cases, through a throttle. The motor helps reduce the effort required to ride, making it easier to tackle hills or ride longer distances.
While e-bikes share many features with traditional bicycles, the motor, battery, added weight and potential for higher speeds can make the riding experience significantly different. Riders still steer and brake the bike, but should learn how the motor assistance, acceleration and braking respond before riding in traffic.
Most e-bikes use a rechargeable battery that powers an electric motor.
Depending on the type of e-bike, the motor may:
The amount of assistance varies by bike and setting, but the goal is the same: making riding easier and more accessible.
| E-Bike Class | How the Motor Works | Assisted Speed | Common Fit |
|---|---|---|---|
| Class 1 | Pedal-assist only | Up to 20 mph | Recreation, commuting and many beginners |
| Class 2 | Throttle-capable and may include pedal assist | Up to 20 mph | Short trips and riders who want help starting |
| Class 3 | Pedal-assist | Up to 28 mph | Longer commutes and more experienced riders |
Many states use a three-class system to categorize e-bikes. For a closer look at how each class works, read What Is an E-Bike? Understanding Class 1, Class 2 and Class 3 Electric Bikes.
Class 1 e-bikes provide pedal assistance only and stop assisting when the bike reaches 20 mph.
These are often considered a good option for recreational riders and beginners.
Class 2 e-bikes have a throttle and provide motor power up to 20 mph.
Because they don't require pedaling to engage the motor, they can feel noticeably different from traditional bicycles.
Class 3 e-bikes provide pedal assistance up to 28 mph.
Depending on where you live, additional rules related to age, helmet use or where the e-bike can be ridden may apply.
E-bikes can help riders:
For many people, e-bikes make cycling more practical for everyday transportation.
E-bikes can be ridden safely, but their speed, acceleration and weight can introduce risks that riders may not encounter to the same degree on a traditional bicycle.
As e-bike use has grown, injuries have become an increasing safety concern. CPSC estimates there were 155,200 emergency-department-treated injuries associated with e-bikes from 2017 through 2024 (Micromobility Products-Related Deaths Injuries and Hazard Patterns 2017-2024). Older adults can face especially serious outcomes: AAA Foundation for Traffic Safety research found that riders age 65 and older experienced a disproportionately high severity of head, neck and torso trauma. (Safety of Micromobility: Regulations, Data and Stakeholders - AAA Foundation for Traffic Safety)
E-bikes share many risks with traditional bicycles, but motor assistance can add speed, acceleration and weight. Those differences can shorten reaction time, affect handling and braking, and make a loss of control more consequential. Drivers may also have difficulty seeing and recognizing e-bike riders, particularly in low-visibility conditions, according to the National Highway Traffic Safety Administration. (Rider Conspicuity Laws | NHTSA), according to the National Highway Traffic Safety Administration.
Before riding in traffic, riders should learn how the e-bike accelerates, shifts assistance levels and brakes. Riders should practice starting, stopping, turning and emergency braking in a low-traffic area, beginning with the lowest assistance setting and increasing it only as comfort and control improve.
For more tips before hitting the road, see AAA’s E-Ride Ready Guide.
Class 3 e-bikes can provide motor assistance up to 28 mph—speeds that may be significantly higher than some riders are accustomed to on a traditional bicycle. Their added battery and motor weight may also affect balance, cornering and braking. AAA recommends choosing a class and power level that match the rider’s experience. Some of the main dangers include:
Crashes with motor vehicles. CPSC notes that most reported micromobility deaths involve motor vehicles and that small, quick and quiet devices can be difficult for drivers and pedestrians to detect. AAA recommends riding predictably, obeying signals and signs, using lights and reflectors, avoiding blind spots and assuming others may not see you.
Road and infrastructure hazards. Potholes, gravel, wet pavement, debris and door zones can cause a sudden loss of control. AAA Foundation research indicates that physically separated lanes can improve safety by reducing riders’ exposure to motor vehicle traffic. AAA recommends using protected bike infrastructure when available, reducing speed on uneven surfaces and scanning farther ahead for hazards.
Head and upper-body injuries. CPSC reports that fractures and contusions or abrasions are among the most common micromobility injuries, with the upper and lower limbs, head and neck frequently affected. AAA recommends wearing a properly fitted bicycle helmet on every ride and replacing it after a crash or according to the manufacturer’s guidance.
Battery fires and charging hazards. Damaged, incompatible or uncertified lithium-ion batteries and chargers can overheat or ignite. CPSC advises consumers to use products designed and certified to applicable safety standards, follow the manufacturer’s charging instructions, stay present while charging and never charge while sleeping or away from home. AAA recommends using only the battery and charger specified for the e-bike, keeping charging equipment away from exits and flammable materials, and stopping use if the battery is swollen, unusually hot, leaking, damaged or emitting an odor.
Out-of-class and modified devices. AAA Foundation research warns that high-speed and aftermarket-modified devices can fall outside the common three-class system, creating regulatory and safety gaps. AAA recommends avoiding modifications that increase speed or power beyond the manufacturer’s design and confirming that a product is legally classified as an e-bike where it will be ridden.
An e-bike may be a good fit if you're looking for:
Before purchasing an e-bike, research local regulations, consider where you'll ride most often and choose a model that matches your comfort level, experience and needs. AAA recommends choosing an e-bike based on the rider's abilities and intended use—not simply maximum speed or power.
An e-bike is a bicycle with an electric motor that helps propel the rider forward. The extra assistance can make commuting, recreation and everyday transportation easier while still delivering many of the benefits of cycling.
Understanding how e-bikes work, the different classes available and the rules that apply where you ride can help you choose the right bike and enjoy it safely.
e-bike safety
E-bikes can make everyday rides easier, but higher speeds and unfamiliar handling can create real safety risks. Use AAA’s E-Ride Ready Guide to understand your device, choose the right helmet and prepare before the first ride.
An e-bike, or electric bike, is a bicycle equipped with an electric motor that assists the rider while pedaling or, in some cases, through a throttle.
An e-bike uses a battery-powered motor to help, making it easier to ride longer distances, climb hills and maintain speed.
It depends. Some e-bikes only aid when you pedal, while others have a throttle that can power the bike without pedaling.
Class 1 e-bikes provide pedal assistance up to 20 mph. Class 2 e-bikes have a throttle and provide motor power up to 20 mph. Class 3 e-bikes provide pedal assistance up to 28 mph.
Requirements vary by state and local jurisdiction. Riders should check local laws before purchasing or riding an e-bike.
E-bikes can be appropriate for beginners when the bike matches the rider’s abilities and intended use. New riders should begin with the lowest assistance setting and practice starting, stopping, turning and braking in a low-traffic area.
Motor assistance generally stops at 20 mph for Class 1 and Class 2 e-bikes and at 28 mph for Class 3 e-bikes. Riders may travel faster through pedaling or on a downhill grade.
Many beginners consider a Class 1 e-bike because it provides assistance only while the rider pedals and operates more like a traditional bicycle. The best choice still depends on the rider’s experience, comfort and local rules.
Helmet requirements vary by state, community, rider age and e-bike class. AAA recommends wearing a properly fitted bicycle helmet on every ride.
Rules vary by location and e-bike class. Check state and local regulations before riding on bike paths, trails, sidewalks or roadways.
Common risks include crashes with motor vehicles, road hazards, loss of control at higher speeds, head and upper-body injuries, battery or charging fires and modified devices that exceed legal e-bike limits.
Use only the battery and charger specified by the manufacturer, follow charging instructions, stay present while charging and stop using a battery that is swollen, unusually hot, leaking, damaged or emitting an odor.
An e-bike may be a good fit for commuting, longer rides, hills or replacing short car trips. Before buying, compare classes, local rules, intended use, safety certification, fit and the rider’s comfort level.
This information is being provided for general informational purposes only. Laws and requirements for e-bikes, e-scooters and e-motos vary by state and local community. Riders should check current local rules before buying or riding.
