page_title: Destination sign
section_title: Flip-disc display
hierarchical_section_title: Destination sign / Technology types / Flip-disc display
caption_attribution_description: Bus destination sign of the flip-dot type, here seen in TriMet (Portland, Oregon) bus 2246, a 1998 New Flyer D40LF, on line 19-Woodstock, which has various routing alternatives. This particular sign (specified by the buyer of the bus, not the bus manufacturer) is a MegaMax model, by Luminator.
context_page_description: A destination sign or destination indicator/destination blind is a sign mounted on the front, side or rear of a public transport vehicle, such as a bus, tram/streetcar or light rail vehicle, that displays the vehicle's route number and destination, or the route's number and name on transit systems using route names. The main such sign, mounted on the front of the vehicle, usually located above the windshield, is often called the headsign, most likely from the fact that these signs are located on the front, or head, end of the vehicle. Depending on the type of the sign, it might also display intermediate points on the current route, or a road that comprises a significant amount of the route, especially if the route is particularly long and its final terminus by itself is not very helpful in determining where the vehicle is going.
context_section_description: In the United States, the first electronic destination signs for buses were developed by Luminator in the mid-1970s and became available to transit operators in the late 1970s, but did not become common until the 1980s. These were flip-disc, or "flip-dot", displays. Some transit systems still use these today.
caption: A flip-disc display on a bus
exif: {"Image Make": "Canon", "Image Model": "Canon PowerShot G9", "Image Orientation": "Horizontal (normal)", "Image XResolution": "180", "Image YResolution": "180", "Image ResolutionUnit": "Pixels/Inch", "Image DateTime": "2009:02:28 13:10:34", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "196", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "180", "Thumbnail YResolution": "180", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "5108", "Thumbnail JPEGInterchangeFormatLength": "5486", "EXIF ExposureTime": "1/200", "EXIF FNumber": "24/5", "EXIF ISOSpeedRatings": "200", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2009:02:28 13:10:34", "EXIF DateTimeDigitized": "2009:02:28 13:10:34", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "5", "EXIF ShutterSpeedValue": "245/32", "EXIF ApertureValue": "145/32", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "145/32", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "222/5", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "4000", "EXIF ExifImageLength": "3000", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "Interoperability RelatedImageWidth": "4000", "Interoperability RelatedImageLength": "3000", "EXIF InteroperabilityOffset": "3362", "EXIF FocalPlaneXResolution": "4000000/291", "EXIF FocalPlaneYResolution": "1000000/73", "EXIF FocalPlaneResolutionUnit": "2", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF SceneCaptureType": "Standard"}