 | This article includes alist of references,related reading, orexternal links,but its sources remain unclear because it lacksinline citations. Please helpimprove this article byintroducing more precise citations.(April 2013) (Learn how and when to remove this message) |
Astraight-line diagram (abbreviatedSLD) is a diagram of a road where the road is shown as astraight line. Such diagrams are usually produced by a highway department, and display features along the road, including bridges and intersecting roads. Rows below the diagram show data about the road, usually including speed limit, number of lanes, bridge numbers, and historical data, among other data. Subway lines also frequently employ straight-line diagrams. An internal SLD viewing system may also include links to other internal data, including photos or plans. Public SLDs are distributed in formats includingPDF andTIFF.
Straight-line diagrams were historically used intransportation planning but have been supplanted for these purposes bygeographic information systems.[1]
Astrip map is aroad map laid out similarly to a straight-line diagram, featuring the same details found in more conventional road maps rather than technical details. In the United States, some strip maps are distributed by state highway departments.[2] In Australia, strip maps are distributed by state automobile associations. In the early 20th century, scrolling strip maps were also a component of some forerunners tosatellite navigation devices. One wristwatch introduced in 1927 came with strip maps to be scrolled by hand. The 1932Iter-Avto was a car-mounted device that scrolled the strip map automatically based ondead reckoning with thespeedometer.[3]
.jpg)
