guide lights

Even the guide lights that assist patrons with stairs are a deep, unobtrusive blue. 

His bluer-than-blue eyes blazed like guide lights on an airfield at night.

"Our founder was actually working on emergency guide lights to help people escape from nuclear power stations and submarines," says Nigel Duncan, boss of STG aerospace.

For example, to accommodate declining eyesight, homes can be fitted with brighter bulbs, better lighting locations, easily accessed controls and nighttime guide lights.

In sharp contrast to the white radiance of the guide lights at the end of the walk, the light over the doorway was faint and yellow, proceeding from a single lamp, set in a curious 117 wrought-iron frame, which depended from a bell-like hood over the door.