What does driving at a maximum speed of 90km mean?

[DelWilliam]

Driving at a maximum speed of 90km means the speed limit is set at 90km/h. Below is relevant information about speed limits: 1. Introduction: Speed limits typically refer to regulating vehicle speeds within a specified numerical range over a certain distance. The primary purpose is to preemptively alert drivers to reasonably control their speed in subsequent sections of the road ahead and prevent the dangers of speeding. Speed limits are an indispensable and most critical component of road transport safety. 2. Speed Limit Standards: The basis for setting speed limits on highways mainly includes national laws (relevant regulations), engineering standards (traffic engineering), and actual road conditions (real-world environment). The relevant regulation is the 'Road Traffic Safety Law of the People's Republic of China,' and the authoritative reference is the 'Technical Standard for Highway Engineering.' The reality is that the overall public awareness of traffic safety still needs improvement. Actual speed limits take legal documents as the absolute premise, traffic rules as the reference standard, and real-world conditions as flexible considerations.