<R1><R1> Hello! May I ask if it is possible to design a machine with a pure conveyor belt that does not move? That is to say, there is no mobile system.
Official Q&A: VEX IQ Robotics Competition 2024-2025: Rapid Relay
2335: no mobile system.
Answered by committee
Yes, this would be possible and legal. As described in the definition of Subsystem 1 in rule <R1> (bold added here for emphasis):
Subsystem 1: Mobile robotic base including wheels, tracks, or any other mechanism that allows the Robot to navigate the majority of the flat playing Field surface. For a stationary Robot, the robotic base without wheels would be considered Subsystem 1.