METHODOLOGY
The VBSM system utilizes an integrated, outdoor-ready network camera, with a built-in processor to support on-board analytics for WWD detection and traffic volume counter, along with…
METHODOLOGY
In this study, 43 households were selected from a sampling frame of 4,010 households that had previously participated in a travel survey and agreed to be contacted for follow-up studies.…
METHODOLOGY
After fine-tuning the CRM algorithm using a microscopic simulation of the test site, the research team worked closely with California DOT (Caltrans) for (a) refining the Concept of…
Methodology
System effectiveness, including unusual occurrences or comments and system acceptance, was measured in terms of work zone intrusion rates and employee survey responses. Unusual…
METHODOLOGY
This case study used microscopic traffic simulation models to depict the impacts of CACC. The modeling framework was based on a state-of-the-art human-driver model and an adaptive cruise…
BenefitsThe data collection and archival characteristics of ADMS are keys to the benefits identified through the case studies. These benefits are:Improved planningImproved policy decision-…
The lessons learned from the project are summarized for the WZIA systems evaluated.
Provide a visual alert and include multiple speakers and volume control to improve sound levels in all…
Technical issues with the warning device suggested a wide range of lessons learned during the project, summarized below:
Understand that the use of electronic devices in active trackway could be a…
The success of the weather alert notification system depends on accurate and reliable weather data from the sensors, appropriately defined threshold conditions, clear communication of alerts to the…
The evaluation found that the new weather alert system issued "on time" warnings 88.9 percent of the time and that messages were issued for 13 of the 15 weather events that merited weather warnings.…
An analysis of four years of data from red light photo enforcement cameras at 11 signalized intersections in the City of Sacramento identified factors that are relevant to the design of violation…
The experience of the Sacramento-Watt Avenue transit priority and mobility enhancement demonstration project provides useful lessons for agencies deploying a transit signal priority system.…
A work zone intrusion alarm (WZIA) system was tested to improve the safety of the current Caltrans Standard Plans for traffic control in work zones in Sacramento, California. The objective of this…
Through partnership with the Federal Transit Administration (FTA), the Sacramento Regional Transit District (SacRT) conducted a demonstration test of a secondary warning device for roadway…
Background
Transit preferential treatments have been deployed across the United States and around the world in order to improve travel times and reliability of bus and light rail routes. Examples of…