Safer household electrical equipment

• Book ID: 102635434
• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 162 KB
• Volume: 7
• Category: Article
• ISSN: 0003-6870
• DOI: 10.1016/0003-6870(76)90265-9

✦ Synopsis

Japanese tunnel lighting research project

Tunnel lighting research

A Japanese research project on the development of safer lighting conditions in road tunnels, the work of the Lighting Research Bureau of Matsushita Electric, Osaka, aims to tackle the problem of the sudden major change in brightness that a driver experiences when entering a tunnel at speed by collecting data on high-intensity lighting installations at tunnel entrances. The unit illustrated is a simulator that creates the conditions met by a driver approaching a tunnel. The girl is seated on a moving track 20 ft (6 m) long: the track 'drives' her up to and into a tunnel of the same length (built to 1/2s scale of an actual tunnel). Peering through binoculars, the 'driver' sees the equivalent of 600 yd (548 m) of road, half of them in the tunnel. The moving track can simulate speeds between 25 and 60 miles/h (40 and 97 km/h).