Which type of vehicle does NOT need to be registered with the State of Illinois?

In Illinois, certain types of vehicles are required to be registered for legal operation on public roads, while others may not need to go through the same registration process. A trolley that operates with electric lines represents a form of public transportation typically governed by specific regulations that differ from traditional vehicles. These trolleys are often part of a public transit system and may be operated by municipal entities or specific organizations that have different registration requirements compared to private vehicles.

Motorcycles, trailers, and commercial delivery vehicles all require registration under Illinois law. This is because they are privately owned or for business purposes, and their operation on public roadways necessitates registration for identification, insurance, and safety compliance. In contrast, the electric trolley operates in a regulated environment that often does not require the same registration as other motor vehicles, primarily due to its function in public transportation systems.