Rural and suburban signing considerations

Rural and suburban conditions are characterized by higher approach speeds. Route guidance tends to be focused more on destinations and numbered routes rather than street names. A sample signing plan for a rural application is shown in Exhibit 7-16.

In cases where high speeds are expected (in excess of 80 km/h [50 mph]) and the normal signage and geometric features are not expected to produce the desired reduction in vehicle speeds, the following measures may also be considered (examples of some of these treatments are given in Exhibit 7-17):

• Large advance warning signs;
• Addition of hazard identification beacons to approach signing;
• Use of rumble strips in advance of the roundabout;
• Pavement marking across pavement; and
• Use of speed warning signs. These can be triggered by speeds exceeding an acceptable threshold.