There are exceptions to their rules, too:
Section 4. Exceptions
(1) Except to the extent regulated under Subparagraph (2), the prohibitions in
this Article X do not apply:
(a) to University employees who are authorized to possess and/or use such
a device pursuant to Standard Practice Guide 201.94;
(b) to non-University law enforcement officers of legally established law
enforcement agencies
or to other non-University employees who, in
either situation, are authorized by their employer to possess or use
such a device during the time the employee is engaged In work
requiring such a device;
(c)
when someone possess or uses such a device as part of a military or
similar uniform or costume In connection with a public ceremony or
parade or theatrical performance;
(d) when someone possesses or uses such a device in connection with a
regularly scheduled educational, recreational or training program
authorized by the University;
(e) when someone possess or uses such a device for recreational hunting
on property which has been designated for such activity by the
University provided such possession and use is in strict compliance
with applicable law; or
(f) when the Director of the University's Department of Public Safety has
waived the prohibition based on extraordinary circumstances. Any
such waiver must be in writing and must define its scope and duration.
(2) The Director of the Department of Public Safety may impose restrictions
upon individuals who are otherwise authorized to possess or use such a
device pursuant to Subsection (1) when the Director determines that such
restrictions are appropriate under the circumstances.
see Article X:
http://www.regents.umich.edu/ordinance.pdf