I have a question is OEM and CERT teams aloud to use gmrs there is a town in jersey now using three gmrs repeaters. They are know taking away from channels I can use because OEM is on those channels.
FWIW, a lot of GMRS repeaters are named to sound official like the ones in your back yard. With the exception of a few CERT groups across the country, EM tends to have their own licensed frequencies in the Public Safety pool. In actuality, they're just a few people trying to sound important.
Fact: They have no exclusive claim to any GMRS frequency. The channels are open to all GMRS licensees. FCC rules are 100% clear on this.
Now it is also true that they don't have to let you use their repeater but, again, it does not mean you can not use the frequency, too.
There are some grandfathered business licensees on the GMRS frequencies. They do have a right to be there, but they do not have exclusivity either.
If the channels are that busy, usually the local users will put their heads together and figure out ways to play nice in the sand box. But, I will reiterate again: No one has exclusive rights to any GMRS channel.
You might do well to get yourself a copy of Part 95 and read it over carefully so that you understand your rights as well as the rights of other licensees.
Do not be intimidated by any "official" sounding local entity. If they try to sic the police on you, you should be prepared with Part 95, chapter and verse, to explain to the police how and why they are being manipulated into enforcing rules that they have no business being involved in. Only the FCC has jurisdiction over Part 95 frequencies and their use.