County mayors have criticized the state’s plan for a single test prior to flying and want a mandatory second test for all arriving passengers.

Kauai island Mayor Derek Kawakami said last week that his initial proposal for secondary testing was rejected by the governor.

Big Island Mayor Harry Kim said his county would opt out of the pre-travel testing program entirely and continue to require all arriving visitors to quarantine for two weeks. Both now have different plans.

The governor said this week that mayors could implement certain secondary testing measures on their respective islands, but the cost and logistics of running such programs would be left to the counties.

Maui and Kauai counties decided on voluntary secondary testing for visitors. The Big Island will require secondary rapid screening upon arrival for visitors to avoid quarantine. Oahu officials have said they want to put in place another layer of screening but do not yet have the testing capacity.

The mixed bag of county and state rules could create chaos for vacationers who have not properly prepared for the various screening requirements, especially those traveling to the Big Island.

“This second test upon arrival to Hawaii island will provide an extra layer of protection for our community,” said Big Island Mayor Harry Kim in a statement Monday. “Virtually, all medical and coronavirus experts agree for the necessity of more than one test.”

Those arriving on the Big Island — home to Hawaii’s active volcanoes and the site of a 2018 eruption that wiped out entire neighborhoods — will take a mandatory rapid antigen test when they land.

Results will be available in about 15 minutes and travelers who test negative will not be required to quarantine. People who test positive will be required to immediately get a more accurate PCR test and then quarantine until their results are available, usually within 36 hours.

People who test positive in the state, whether on vacation or at home, are required to isolate and cannot fly until they no longer have the virus.