From August 2007 the Prado received several equipment and safety upgrades.

Several safety upgrades must be in place at all public crossings in order to receive Quiet Zone approval.

The goal of the campaign has since climbed to $7 million, and construction of the safety upgrades had not begun as of last week.

If there are no hurricanes before the safety upgrades are in place, he said, "we'll be O.K."

This would be supplemented by safety upgrades.

The TL Magna benefited from a number of safety upgrades.

In September 2007, the San Bernardino Tunnel saw the completion of a major safety upgrade.

He said that recently proposed safety upgrades, which include widening the runways, would prevent the ponding problem.

The safety upgrades required for extension of the operation would cost some €120 million.

The commission voted instead to implement various safety upgrades.