Applications of Supplemental Warning Devices

摘要

The supplemental warning devices described in this synthesis indicate the diversity of devices currently in use. While information was requested from each of the 50 states and a large number of local and county governments, not every agency responded. In addition, because of time constraints and personnel turnover, agencies that did respond forwarded information only on those devices with which the respondent had personal knowledge. Undoubtedly, readers of the synthesis can remember warning devices that they have experienced on the roadways that are not contained in the MUTCD or in the synthesis.