Straight-line diagram

Public SLDs are distributed in formats including PDF and TIFF.

Straight-line diagrams were historically used in transportation planning but have been supplanted for these purposes by geographic information systems.

[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 to satellite navigation devices.

The 1932 Iter-Avto was a car-mounted device that scrolled the strip map automatically based on dead reckoning with the speedometer.

This straight line diagram illustrates the stops on the Piccadilly Line, part of London's Underground.
This is a more accurately rendered map of the Piccadilly Line, showing curvature and the relative distance between stops. It illustrates why straight-line maps are more useful when only the sequence of stops is relevant.