After that date, states without such laws will be required to use 3 percent of their Federal highway money for safety programs.
Congress is under intense pressure to get the highway money out to the states before spring construction projects are delayed.
Much of the money, like that for the Sharon rest stop, was federal highway money.
States that fail to submit or implement their plans risk losing federal highway money.
By then, though, highway money was in short supply.
The federal government is offering extra highway money to states that change to the primary seat belt law.
Without an emissions testing program, the state stood to lose federal highway money.
Already, House transportation committee leaders are seeking more in highway money than the president requested.
States would have to comply with the national standard or risk the loss of part of their Federal highway money.
States are depending on getting the highway money by spring, when the construction season begins.