Portable concrete barriers provide positive protection for highway work zones. Since the connection is often structurally the weakest part of the barrier system, connector design is a critical … [Read more...] about Optimum Design of Pin and Loop Portable Concrete Barrier Connectors
Parts of Roads
Guidelines for Positive Barrier Use in Construction Zones
The need for positive barriers in construction zones is now based on individual judgment, and there is an expressed need for objective barrier placement criteria. The number, diversity, and … [Read more...] about Guidelines for Positive Barrier Use in Construction Zones
A Truck-Mounted Portable Maintenance Barrier
A truck-mounted portable maintenance barrier is described. The barrier is designed to provide a reasonable degree of positive protection in short-duration work zones where it is not practical to use … [Read more...] about A Truck-Mounted Portable Maintenance Barrier
Portable Traffic Barrier for Work Zones
A portable, positive construction zone barrier is described. The barrier is suitable for use at sites where work will take as little as several hours. It is constructed from used cars and thrie-beam … [Read more...] about Portable Traffic Barrier for Work Zones
Evaluation of Traffic Controls for Highway Work Zones
The objective of this research was to evaluate the effectiveness of channelizing traffic control devices and to determine how these devices should be designed and used to guide drivers as they … [Read more...] about Evaluation of Traffic Controls for Highway Work Zones
Use of Chevron Patterns on Traffic Control Devices in Work Zones (Abridgement)
The objectives of the research were to select the most effective design for the chevron pattern and to evaluate the effectiveness of selected chevron designs under road conditions as compared with … [Read more...] about Use of Chevron Patterns on Traffic Control Devices in Work Zones (Abridgement)