| 摘要 |
A roadway marking system includes a first set of markers adapted for placement along a roadway for displaying a first color to drivers to indicate to the drivers that they are proceeding along the roadway in the correct direction, and a second set of markers adapted for placement along a roadway to display a second color to drivers to indicate to the drivers that they are proceeding in the incorrect direction (i.e., against traffic) on the roadway. The system further includes a third set of markers adapted for placement along a roadway for displaying a third color to drivers to indicate to the drivers that lower speed or other cautionary measures are required, and a fourth set of markers adapted for placement along a roadway for displaying a fourth color to drivers to indicate to the drivers that they are approaching a change in roadway conditions, such as a merge, an exit, or an intersection. The sets of markers are used simultaneously, as appropriate, so that drivers continuously receive the maximum amount of information. Spacing between the third and/or fourth markers is varied to alert drivers as to the proximity of a cautionary zone or a change in roadway conditions, respectively.
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