METHODOLOGY
This study considered 13 hypotheses (e.g., carpooling to stations increases) for the purpose of evaluating the BART Carpool to Transit Access Program pilot project facilitated through a…
METHODOLOGY
Six simulation scenarios were considered, assuming 100 percent market penetration of personal AV in the same horizon year as the base case scenario for the MTC-ABM: (i) Doubled highway…
METHODOLOGY
An open-source microscopic traffic simulation software was used to model the study area. The simulation model used the local travel activity data from the San Francisco Bay Area’s…
METHODOLOGY
The following three strategies were tested:
Strategy 1, Arterial timing optimization without private vehicles; Strategy 2 - Transit signal priority (TSP) at signalized intersections, and…
METHODOLOGY
The researchers created a Mixed Integer Nonlinear Program (MINLP) for this study, which was divided into two smaller problems: selecting a route and choosing pickup and drop-off points.…
METHODOLOGY
This study considered a hypothetical vehicle as the AT; a mid-sized, electric automobile. A two-staged model was developed to first quantify and compare the financial proposition of…
Methodology
Researchers used modeling techniques to assess the potential benefits of SLTA. To calibrate a simulation model, researchers utilized video data collected from five intersections in the…
METHODOLOGY
Integrated Transport and Health Impacts Model (ITHIM), developed in 2010, is an open‐source tool that incorporates the peer‐reviewed science with a web‐accessible engine capable of…
With the Transit-Only Lane Enforcement (TOLE) program in place, San Francisco has been able to change motorist behavior and reduce the frequency of repeat offenders obstructing transit-only lanes.
In…
The Transit-Only Lane Enforcement (TOLE) program showed promising results reducing major delays to transit vehicles along TOLE corridors.
The 38L-Geary achieved a 3 percent daily and 7 percent…
FINDINGS
The following results were reported for FY2019:
San Francisco Bay Area Rapid Transit (BART), San Francisco, California
BART received funding to pilot an integrated carpool-to-public-transit…
Findings
In the urban scenario, ride sharing was able to reduce vehicle miles traveled (VMT) by 11 percent and the fleet size by 29 percent at the cost of a 15 percent increase in total travel time.…
FINDINGS
When the heavy trucks are driven using CACC at the tested time gaps between 0.6 seconds and 1.5 seconds, a three-truck platoon pulling conventional well loaded dry goods van trailers can…
Findings
The analysis found that replacing the fleet entirely with BEBs would completely eliminate fleet emissions of carbon monoxide (CO), nitrogen oxide (NOx), and volatile organic compounds (VOC…
The study attempts to broaden the understanding of the interplay among emerging and established modes of transportation by approaching from several angles the question of how shared modes, and…
Findings
Despite many similarities, taxis and ridesharing differ in user characteristics, wait times, and trips served. While ridesharing trips replaced taxi trips, at least half of ridesharing trips…
The model was applied to a test case based off the Marina neighborhood in San Francisco. The network had 20 parking areas including 282 parking spaces on 19 on-street block faces. In this example,…
Content references source material no longer available at its original location.
A Benefit-to-Cost-Analysis (BCA) was applied that compared the "build" and "no-build" scenarios. The methodology estimated both costs and benefits for a 30-year period (2020 to 2049) and was…
Content references source material no longer available at its original location.
TransitScreens can help eliminate a number of common annoyances to travelers, such as arriving at an empty bike-share station or having an unexpected 15 minutes wait at a bus stop or train station.…
Methodology:Data on incidents and their characteristics were collected "before" and "after" the implementation of BAIRS. Pre-BAIRS data was obtained from Caltrans and the California Highway Patrol…
MethodologyA SPS pilot program carried out in San Francisco from 2009-2013 set out to improve drivers' parking experience. Sensors installed in the surface of each parking spot communicated with…
Content references source material no longer available at its original location.
METHODOLOGYIn reviewing these three cases, the authors found that while these public transportation agencies have made their best efforts to estimate smart card costs and benefits, these studies are…
METHODOLOGYThe research team conducted a literature review and interviewed a total of 63 public and private organizations from across the nation, including transit agencies, State departments of…
FINDINGS
The presence of an audible alert system enhanced drivers' situational awareness and influenced the smoothness of driving profiles as drivers approached slower moving vehicles or vehicles…
Findings
The use of archived data is a time efficient and cost-effective use of resources to produce an "existing conditions" analysis when data are available. By eliminating the need for data…
FINDINGSConversion of HOV lanes to HOT lanesEarly evaluations in San Diego (I-15 FasTrak) and Houston (US-290 and I-10 QuickRide) indicated that HOV to HOT conversions can increase lane use by 21 to…
FINDINGS
There were a variety of test corridor AMS results specific to the benefits resulting from different ICM strategies. The following results were reported.
HOT lane and highway traveler…
Content references source material no longer available at its original location.
RESULTSThe participant survey found:Sizable increases in transit mode share of 5.5 more transit commutes per month for on-site work commutes.Decreased average commute time an average of 5 percent for…
Notes:
See also:
Swan, Nicole, et al. 511 Virginia Evaluation, Report sponsored by VDOT, January 2004.
Final Report Model Deployment of a Regional, Multi-Modal 511 Traveler Information System,…
In Seattle, the following evaluation data were highlighted:
1) Top Sources of Traveler Information (percent of trips where information was consulted).
En-route radio (56 percent).
Pre-trip radio (…
METHODS
A Traveler Information Center was designed to collect, process, and disseminate information directly to the public through TravInfo, a Travel Advisory Telephone System (TATS) and internet…
Content references source material no longer available at its original location.
RESULTS
In the first six months of the program the San Francisco Department of Parking and Traffic (DPT) reported a 42 percent reduction in the number of red light violations at intersections with…
RESULTS
New York City, NY: A number of robotic cameras were installed at 18 intersections equipped with pavement loop detectors. The total cost was 15.5 million dollars over a three year period.…
FINDINGS
Red Light Enforcement Systems
The automated red-light enforcement system in New York, NY began operation in 1993 with enforcement at 15 intersections; by 1998, 30 intersections were included…
Content references source material no longer available at its original location.
Methodology
Three models were developed to estimate parking occupancy using meter payment data focused on two metrics: parking occupancy rate and meter payment rate. Occupancy and payment rates could…
In the context of Equity and Accessibility, the study noted that there was currently a lack of passenger loading zones in the city. The current blue zones supporting passengers with disabilities was…
Understand time-intensive data requirements for valid carpool verification and enforcement. In this pilot, the vendor found it challenging and time-intensive to meet the data requirements for…
The final report found that Transportation Network Companies (TNCs) accounted for approximately 50 percent of the rise in congestion in San Francisco between 2010 and 2016, as indicated by three…
Further research, testing, and safety features should be developed to assist drivers as they transition from automated to manual control of a vehicle. Analysis of automated vehicle crashes in…
Researchers recommended better rider safety measures and regulations, such as increased helmet use to reduce injury rates.
E-scooter manufacturers should encourage helmet use by making them more…
Content references source material no longer available at its original location.
Parking rate adjustment models eventually require recalibration, which requires payment and occupancy data. In San Francisco, payment rate information will continue to be provided by the smart…
Content references source material no longer available at its original location.
Recalibrate parking rate adjustment models when changes to parking policies and regulations may affect non-payment behavior. A major assumption that can impact the accuracy of the model is non-…
Transit Signal Priority at Two AgenciesThe San Francisco Municipal Transportation Agency (SFMTA) uses TSP for both light rail and buses at many intersections in the city. TSP systems used in San…
The SFpark pilot project of the San Francisco Municipal Transportation Agency (SFMTA) uses a demand-based approach to adjusting parking rates at metered parking spaces in the SFpark pilot areas and…
The SFpark pilot project of the San Francisco Municipal Transportation Agency (SFMTA) uses a demand-based approach to adjusting parking rates at metered parking spaces in the SFpark pilot areas and…
The SFpark pilot project of the San Francisco Municipal Transportation Agency (SFMTA) uses a demand-based approach to adjusting parking rates at metered parking spaces in the SFpark pilot areas and…
The SFpark pilot project of the San Francisco Municipal Transportation Agency (SFMTA) uses a demand-based approach to adjusting parking rates at metered parking spaces in the SFpark pilot areas and…
In corridors where there were multiple data sets available for analysis, in the case of conflicting data, staff took a look at historical Performance Monitoring System (PeMS) data in order to…
Do not underestimate the scope of work. It is easy to underestimate the scope, magnitude, and technological sophistication necessary to offer real-time parking data and provide demand responsive…
The TravInfo project established project and evaluation goals that were ambitious and unrealistic to achieve within the time allotted. Any new technology product requires sufficient time to be…
TravInfo's primary successes lay in developing a network of public and private professionals who collaborated on advanced traveler information system projects in a variety of settings and in…
In the project-planning phase, the TravInfo project relied on the best-case scenario for both system design and implementation. It did not consider worst-case scenarios to develop possible…
The public and private partners approached TravInfo with different motivations and expectations. The public side generally hoped to disseminate accurate and timely traveler information as widely as…
Formalizing the incident management effort existing in many cities into an incident management program can make incident management a core agency activity at senior executive levels and demonstrate a…
While no single approach can be prescribed for all incident management efforts, a flexible framework based on experiences from successful incident management programs in the United States can be…
There is some form of incident management activity in most major and many mid-sized urban areas. Typically this involves each agency carrying out its own responsibilities, with primarily working-…
The Regional Traffic Incident Management Programs: Implementation Guide aims to explain general steps to implementation (with an institutional, rather than technical, focus), and is based on…
511 system deployers should recognize that interoperability is becoming an important issue in achieving the vision of a nationwide 511 System and consider ways to achieve interoperability in their…
Utilize well-equipped safety service patrols to assist highway motorists after vehicle malfunctions or crashes, and to coordinate a safe and efficient response.
Safety service patrols keep affected…
Content references source material no longer available at its original location.
This study examined a proposed 2.2 mile transit priority corridor in San Francisco that would incorporate many features of Bus Rapid Transit (BRT) including transit only lanes, transit priority…
This report provided key findings from an FHWA funded evaluation of the PedSafe project in San Francisco where ITS countermeasures were implemented to improve pedestrian safety in areas with…
Content references source material no longer available at its original location.
Growing congestion on metropolitan highway networks poses a substantial threat to the U.S. economy and to the quality of life of millions of Americans. Congestion pricing – sometimes called value…
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…
Using an Analysis, Simulation, and Modeling (AMS) framework researchers estimated the potential costs of implementing Integrated Corridor Management (ICM) strategies on the I-880 corridor located…
This TCRP synthesis report presents information on the state of the practice in real-time bus arrival information systems based on literature research and survey of transit agencies in the United…
This paper examined current red light camera technology, assessed system effectiveness, and outlined major issues associated with deployment. In addition to a review of the basic components of this…