Assessment of Changeable Message Sign Technology

Details

• Creators:
  Lavigne, Richard
• Corporate Creators:
  United States. Department of Transportation. Federal Highway Administration
• Contributors:
  Mammano, Frank J.
• Subject/TRT Terms:
  Disc Matrix Holography Light Bulb Matrix Rotating Drum Variable Message Signs
• Publication/ Report Number:
  FHWA/RD-87 025
• Resource Type:
  Tech Report
• Right Statement:
  Public domain
• Geographical Coverage:
  United States
• Edition:
  Final
• Corporate Publisher:
  United States. Department of Transportation. Federal Highway Administration
• Abstract:
  The report reviews the operational experience of the three principal types of Changeable Message Signs (CMS) used on freeways and Interstate highways in the continental United States. The three types examined here are the light bulb matrix, rotating drum, and disc matrix. These types have experienced only minor technical improvements since their introduction in the 1970s. Part 1 of the report describes each type, lists operational experience, and reports on new CMS technology. Part 2 reports on the radically new 3-dimensional imaging medium called holography. A survey of current manufacturers of holographic materials was conducted to assess the potential use of holography to present more effective sign messages to motorists. Fourteen responses from manufacturers are summarized, and recommendations made for further work on this promising new sign technology.
• Format:
  PDF
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:28e16220094b03534828eccb4cef022666d439bc22d4b215c8a26ac3d735f59d61ba562229ef0ef7530c7429a918842f221843c653114c0047248b18b4df00ac
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/75571/dot_75571_DS1.pdf
• File Type:
  [PDF - 875.67 KB ]