It doesn’t really say but I suspect it’s to prevent people who live in the dorms from bringing in some garbage with a sketchy battery that is more likely to cause a fire.

I do agree the practice of forcing people to use your vendors is sketchy but apparently it only applies to people who live on campus (still though).

A University of Maryland, College Park policy prohibits most students from owning their own personal e-vehicles, forcing them instead to rent them from two companies contracted with the university

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