Vehicle Speed Information Displays for Public Websites A Survey of User Preferences

The paper reports on a study comparing alternative presentations offreeway speed data on maps. The goal of the study was to inform the
design of displays of real time speed data over the Internet to the
general public. Subjects were presented with a series of displays and
asked to rate their preferences. We looked at different choices of color
(3 colors, 6 colors or a continuous range), and proposed line, sensor,
and segment representations of the speed data. We also collected
feedback on more complex displays such as comparison between current and
"normal" speeds, and a chart of speed variation over a period of time at
given locations.
(Also cross-referenced as HCIL-TR-2000-23)
(Also cross-referenced as UMIACS-TR-2000-73)