File:America's Highways 1776–1976 - page 344.jpg
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Size of this preview: 800 × 495 pixels. Other resolutions: 320 × 198 pixels | 640 × 396 pixels | 1,045 × 646 pixels.
Original file (1,045 × 646 pixels, file size: 263 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Demonstration moving merge control systems have been used since about 1969 on freeway entrance ramps to help ramp drivers enter a freeway in situations where it would be difficult to determine adequate gaps in the freeway traffic. This is an artist’s concept of the moving greenband system, just one type under consideration. |
| Date | |
| Source | https://en.wikisource.org/wiki/Page:America%27s_Highways_1776%E2%80%931976.djvu/350 |
| Author | Federal Highway Administration |
Licensing
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This image is a work of a United States Department of Transportation employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. | 
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:39, 5 January 2023 | | 1,045 × 646 (263 KB) | Sp1nd01 | Uploaded a work by Federal Highway Administration from https://en.wikisource.org/wiki/Page:America%27s_Highways_1776%E2%80%931976.djvu/350 with UploadWizard |
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