In addition, the state is expected to impose voluntary limits on water use next week.

The measure would create voluntary limits, starting in 2002, on campaigns for almost all state elective offices.

Some shops follow a voluntary limit and do not sell to minors.

It would set voluntary limits on campaign spending and ban soft money, all corporate contributions and the very large individual ones.

Whether the Bush administration will accept even voluntary limits remains to be seen.

The voluntary limit of 2.3 million cars a year has been in effect since 1985.

The legislation would impose voluntary limits in the general election ranging from $950,000 to $5.5 million, based on a state's voting age population.

The proposals also contain provisions for voluntary limits on spending.

But voluntary limits are very difficult to enforce.

Japan's voluntary limit on car exports has declined sharply since the early 1980's, to about 1.6 million from more than 2.6 million.