| 摘要 |
Apparatus or means, on a first vehicle, providing the driver of a second vehicle, with information characterising the distance between the two vehicles. Information is selectively presented to the second driver via masking means which utilise the angular relationship existing between the eyes of the second driver and the apparatus or means. Masking is accomplished via sets of inclined, parallel, opaque, slats and vertical separators, which create apertures in a masking frame in front of an illuminated green and red coloured, translucent sheet. The masking frame (16), has a grill of vertical separators (20), which divide downward sloping slat members (13), from upward sloping slat members (15). Slat members (13) create green coloured, safe distance indicating apertures (21), and slat members (15) create red coloured, unsafe distance indicating apertures (22), in frame (16), which is placed in front of the sheet (17). |
