Americans are not ready for the Real ID Act that goes into full effect a year from now, according to a survey released last week by the nonprofit trade group U.S. Travel Association.

The Real ID Act was passed by Congress in 2005 to increase security measures concerning state-issued personal identification cards, mainly driver’s licenses, that are often used to access airports and military bases and nuclear installations. Beginning Oct. 1, 2020, only Real ID-compliant documentation will be accepted for boarding commercial flights, including domestic flights, and entering federal buildings and military bases.

Compliant documentation includes passports (which are still required for international flights), passport cards and trusted traveler identification like Global Entry. But a majority of Americans turn to their driver’s licenses to pass through security for their domestic air travel, and only 42 percent of Americans hold passports.

Some 99 million Americans do not have the Real ID-compliant identification, the U.S. Travel Association said.