How can I tell the difference between electric-assist bicycles and classic bicycles?

The stickers on electric-assist bicycles are blue in colour, and you’ll also see a ⚡ icon on the side of the frame, whilst the stickers on classic bicycles are greenish or blackish in colour. In the app,
electric-assist bicycles are indicated by a bar showing the charge level beneath the bike icon. The difference is evident not only in their appearance but also in their numbering: Classic bicycles’ numbers start with an 8, whilst those of electric-assist bicycles start with a 9.