​University of California Santa Cruz officials are restricting campus access for visitors and vehicles, in an attempt to muzzle Tuesday’s 4/20 marijuana smoke-out.

UCSC police have restricted access to the campus in past years, but the “unsanctioned” event continued to grow. There are still no plans to make any arrests or issue citations to anyone for smoking pot on campus, reports KSBW Action News

The university reportedly realizes there’s no way it can stop thousands of people from taking part in the 4/20 celebration, so they focus on restricting “outsiders” and enforcing strict traffic measures.

Photo: KSBW ​The 4/20 smoke-outs demonstrate the impossibility of effectively enforcing the marijuana laws, according to advocate Leo Ritz-Barr.