According to the search results, electric bikes can be safe and secure if certain precautions are taken. For example, it is recommended to park your electric bike in a public, high-traffic, well-populated, and well-lit area to deter theft (source: [Bicycle2Work](https://bicycle2work.com/keep-electric-bike-safe-secure/)). Additionally, wearing a helmet is a must when riding an electric bike to help avoid accidents (source: [Bike Avenger](https://www.bikeavenger.com/are-electric-bikes-safe/)). While there are different types of electric bikes, including superfast ones, it is important to follow safety guidelines and secure your bike properly to minimize risks (source: [Electric Bike Report](https://electricbikereport.com/tips-electric-bike-safe-secure/)).
Generally, driving at an abnormally high speed has been proven to cause most accidents.
Superfast electric bikes safe at design, and specifications like bigger batteries can help propel the bike’s momentum.