Other officials said the state would study the possible hazards thoroughly in an inquiry that might take weeks.
The state is studying such options as using prison ships.
Massachusetts is expected to follow Virginia, and at least a dozen other states are studying reductions.
In 2000 the state studied what it could do to address that problem.
The state is now studying the feasibility of testing 40,000 trucks and 400 buses.
At least 23 states now offer or are studying proposals for such plans, following the lead of Minnesota, which introduced the idea in 1985.
And more than a dozen other states are studying new restrictions or proposals to strengthen existing ones.
This state of art facility is the campus hub for technology and studying.
He said the state was studying how much it would cost.
About 30 states are studying legislation to provide health insurance to those who do not have it.
