Transit officials said that the tracks near 135th Street are inspected once a week.

In Connecticut, where more than 330,000 students ride buses to and from school, buses must be inspected once a year.

In 1999 there were 115 Inspectors which meant that a workplace could expect to be inspected once every 30 years.

Your accommodation will be inspected at least once every four years.

Under current law, every passenger vehicle registered in the state must be inspected once a year.

Each vehicle must be inspected by the Transportation Department at least once every six months.

Onboard electrical and computer systems, once inspected at the start of the season, may not be changed without prior approval.

In some Member States, it would appear that each vessel is inspected once every ten years, a figure which might just as well be zero.

Once inspected, vehicles were told to be on their way.

The boats are inspected once a year, yet unannounced visits rarely if ever occur.