Hawaii Gov. Linda Lingle has vetoed a bill that would have allowed younger drivers in the state to obtain CDLs.

The bill, SB74, which faced strong opposition from the state’s Department of Transportation, lowered the minimum age from 21 to 18 for a person to receive a commercial driver’s license, according to The Associated Press.

Transportation and tourism companies, however, lobbied for the bill, citing a 14-year low in unemployment rate that made it difficult to attract drivers. Restrictions within the bill would have prevented the younger commercial drivers from driving school buses, hauling hazmat or operating tractor-trailers.

In a veto statement, Lingle said research conducted by her office proved it a bad idea to put younger drivers behind the wheel of commercial vehicles.

“According to the Insurance Institute for Highway Safety, the rate of motor vehicle deaths per 100,000 drivers age 18 to 20 was nearly twice that of drivers age 21 and over,” Lingle said. “While the industry is understandably concerned with the shortage of commercial drivers, there is no demonstrated evidence this bill would alleviate these concerns.”

There is no indication as to whether the veto will be challenged by lawmakers.