The variety of traffic control measures being used during night maintenance operations are briefly described and the need is pointed out for research on sign complexity and reflectorization. It is … [Read more...] about Night Work Zone Reflectorization
Safety and Security
Reflectorized Devices for Driver Information. Introduction
This circular presents 8 summaries of areas requiring research in the field of reflectorized devices. The problem areas have been identified as follows: snowplowable raised pavement markers; sign … [Read more...] about Reflectorized Devices for Driver Information. Introduction
Evaluation of Temporary Pavement Marking Patterns in Work Zones: Proving-Ground Studies
Results of proving-ground studies for evaluation of temporary pavement markings for work zones are summarized. The objective was to investigate 10 candidate temporary marking treatments: one base … [Read more...] about Evaluation of Temporary Pavement Marking Patterns in Work Zones: Proving-Ground Studies
Visibility in Construction and Maintenance Work Zones
Several documents that will assist the engineer in planning and maintaining safe construction zone visibility are discussed and an attempt is made to relate positive experiences to the user. The … [Read more...] about Visibility in Construction and Maintenance Work Zones
Visibility Requirements for Traffic Control Devices in Work Zones
The objective of this study was to develop a performance requirement or standard for the detection and recognition of retroreflective traffic devices used in work zones. The scope of the study was … [Read more...] about Visibility Requirements for Traffic Control Devices in Work Zones
Evaluation of Fluorescent Orange Signs
In recent years, fluorescent orange signs have become a viable option for increasing the visibility of traffic control devices in temporary traffic control zones due to the fact that the fluorescent … [Read more...] about Evaluation of Fluorescent Orange Signs