What should you note about electric bicycles (e-bikes) participating in road traffic?

The selected combination is correct because e-bikes are indeed noted for being deceptively fast, which means they can reach speeds that might surprise other road users who expect them to behave like regular bicycles. Additionally, their appearance is very similar to conventional bicycles, making it difficult for drivers and pedestrians to distinguish them at a glance.

It's important to recognize that the third option, related to engine noise, is not applicable since e-bikes are generally quiet and do not produce significant noise from their motors. Understanding these characteristics is crucial for road safety, as it helps all road users to better anticipate the behaviors and speeds of e-bikes, reducing the risk of accidents.

In German traffic regulations, cyclists and e-bike riders must follow specific rules that consider their unique capabilities and appearances, thereby promoting safer navigation in shared road spaces.