The growing use of electric bicycles and electric scooters has raised safety concerns, especially regarding the batteries that power them. These vehicles are becoming more common as a form of transport, but they are also facing restrictions in public spaces and transportation systems due to incidents involving fires and improperly modified batteries. The issue has sparked discussions about balancing the benefits of these eco-friendly vehicles with the potential risks they pose. In the United Kingdom, Merseyrail has introduced rules limiting the use of certain electric bicycles after an incident involving a modified electric bike. Similar measures have been taken in other countries, including the United States, Canada, China, and Italy. Universities and building managers in these regions have restricted the use of electric bicycles and scooters in specific areas to reduce the risk of accidents or fires. Fire departments in cities like London, New York, and Toronto have reported an increase in fires linked to electric bicycles and scooters. Many of these incidents involve lithium-ion batteries, which are commonly used in these vehicles. The problems are not limited to low-quality batteries bought from unknown online sources. They also include homemade modifications, the use of incompatible chargers, and reconditioned battery packs that lack proper tracking or safety standards. The trend of modifying electric vehicles has grown because consumers want more power and longer range without paying higher prices. This has led to the sale of vehicles with specifications that exceed legal limits. These modifications raise safety concerns, particularly when the vehicles are used beyond their intended purposes or in environments where they could pose a risk. While there is a clear difference between vehicles with properly designed batteries and those that have been altered, it is difficult to assess and control the safety of all electric vehicles. As a result, many institutions and transportation providers have chosen to implement restrictions rather than risk potential hazards. However, the challenge remains to distinguish between safe and unsafe vehicles before applying widespread restrictions, similar to how power banks are banned on airplanes while smartphones are permitted. The effect of these restrictions on the use of sustainable transportation remains unclear.