Lundi, 22 Août, 2022 - 20:15
Previous researchers found that the most important accident causation factor was the driver’s abnormal driving status, which was associated with driving volatility. And the driving volatility can be traced from the trajectories of the vehicles that were embedded in the BSMs. Based on these findings, we developed an automatic safety diagnosis system for...
Lundi, 22 Août, 2022 - 20:15
This project aims to know how the Intelligent Vehicle Technologies (IVT) can improve Vulnerable Road Users’ (VRU) safety in different environments and conditions (e.g., sight distance and traffic flow) at signalized intersections. For the statistical analysis on historical aggregate crash data, the project studied risk factors on crash injury severity for...
Lundi, 22 Août, 2022 - 20:00
The document provides the transportation operations community (public agencies, consultants, and researchers involved in planning for, designing, operating, and maintaining transportation operations and management systems) with information on practices in coordinating with information technology staff. This material focuses on the value of coordination and...
Lundi, 8 Août, 2022 - 17:45
The use of precast pretensioned girders using 0.7-in. diameter strands would help bridge designers extend the spans of the existing girder shapes.
The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 315: Details of the Study on the Use of 0.7-in Diameter Strands in Precast Pretensioned Girders is supplemental to NCHRP...
Lundi, 8 Août, 2022 - 17:45
Long-span bridges are often used in environmentally sensitive terrains, water crossings, and in locations with traffic and geometric restrictions.
The TRB National Cooperative Highway Research Program's NCHRP Research Report 994: Use of 0.7-in. Diameter Strands in Precast Pretensioned Girders presents the design methodology for precast pretensioned...
Lundi, 8 Août, 2022 - 17:30
The variety of median widths and terrains combined with evolving testing specifications and lack of conclusive data on median crossover crashes have been obstacles to developing median barrier guidance.
The TRB National Cooperative Highway Research Program's NCHRP Research Report 996: Selection and Placement Guidelines for Test Level 2 Through Test...
Mercredi, 3 Août, 2022 - 14:15
Integral abutment bridges have become popular worldwide by eliminating movable shoes which are expensive to purchase, install, and maintain in conventional bridges. However, the behavior of bridge abutments subjected to air temperature changes for integral bridges is different from that of conventional bridges. Expansion and contraction of bridge girders due to...
Mercredi, 3 Août, 2022 - 14:15
Research has explored the benefits of innovative pedestrian and bicycle facilities, but it is unclear how pedestrians and bicyclists learn to properly use them. This report provides information on new pedestrian and bicycle treatments and (1) the behavior and knowledge of pedestrians, bicyclists, and drivers traversing through, on, and around the new facilities...
Lundi, 25 Juillet, 2022 - 16:00
First launched more than 10 years ago, the Road Safety Toolkit is an important online resource that provides free information on the causes and prevention of road crashes that result in death and injury. It will continue to be a freely available tool that provides practical, up-to date knowledge of how treatments can be implemented. The resource web site is...
Lundi, 25 Juillet, 2022 - 15:45
Guide to Pavement Technology Part 4E: Recycled Materials presents the latest information about products manufactured from recycling various waste materials accepted through registered recycling and reprocessing facilities. This includes the specification, manufacture and application of products derived from the recovery of construction and demolition waste (C...
Lundi, 25 Juillet, 2022 - 15:45
The Florida low profile barrier—consisting of multiple interconnected portable concrete segments—is typically utilized in construction zones to separate traffic from construction activities. The original development and validation (crash testing) of the barrier were in accordance with applicable standards at the time (NCHRP Report 350). In the...
Lundi, 11 Juillet, 2022 - 18:30
The research aimed to identify and recommend designs of quick build protective measures for cycleways for introduction in Aotearoa New Zealand. The pros and cons of different forms of infrastructure for safe, quick build cycleways were laid out. The full report is available from the New Zealand Transport Agency web site at https://www.nzta.govt.nz/resources/...
