Which of the following is NOT classified as a road user?

The classification of road users typically includes individuals or entities that utilize the roadways for transportation. This encompasses various forms of transportation, such as pedestrians, wheeled electric scooters, and trains, all of which are designed to operate on or alongside roadways.

Pedestrians are considered road users because they share the space with vehicles and must be mindful of traffic rules for safety. Wheeled electric scooters are also road users as they are often operated on the same pathways as bicycles or other forms of non-motorized transport. Trains, while not conventional road users in the typical sense, do operate on dedicated tracks that can intersect with roads, thus placing them in discussions about road safety and usage.

In contrast, a fictional character like SpongeBob SquarePants does not represent an actual mode of transportation or a person who interacts with the roadway in a meaningful way. Therefore, it is classified as NOT being a road user, as it does not participate in or have any relevance to actual traffic scenarios or road regulations.