ACRP Seeking Synthesis Topic Submissions for FY 2017


TRB's Airport Cooperative Research Program (ACRP) Synthesis Program seeks synthesis topic submissions for FY 2017 consideration. Topics are being accepted through the Synthesis Nomination web portal and are due by September 16, 2016. New topics for FY 2017 will be selected by the ACRP Synthesis Oversight Panel in October 2016.

This Summary Last Modified On: 6/24/2016


Read more: ACRP Seeking Synthesis Topic Submissions for FY 2017

RFQ: Best Practices for Airport Obstruction Management


TRB's Airport Cooperative Research Program (ACRP) has issued a request for qualifications to identify research teams with the appropriate experience and expertise to conduct research related to airport obstruction management. Qualifications are due September 19, 2016.

After the Statements of Qualifications are received and reviewed, research teams will be invited to submit a specific proposal that includes a research approach, staffing plan, and a budget. Additionally, each selected team will be required to submit the necessary documentation required for the contracting process. It is expected that the research teams will be either private consultants, academics, or a consortium of both.

This Summary Last Modified On: 8/8/2016


Read more: RFQ: Best Practices for Airport Obstruction Management

ITS Benefits >> Deployment of special event signal timing plans has reduced queuing onto travel lanes of I-75 before events and reduced time for traffic to disperse after events to 90 minutes from 3 to 4 hours.

This synthesis documents the state of the practice associated with designing, implementing, and operating active traffic management (ATM) on arterials. Information for this synthesis was gathered through a literature review of advanced ATM methods for arterials and in-depth telephone interviews of agencies selected through a screening interview. The study has provided information on strategies used to actively manage traffic and congestion on arterials; situations and operating conditions in which ATM strategies have been successfully and unsuccessfully deployed on arterials; and system and technology requirements associated with implementing the strategies.

The city of Gainesville, Florida, where the University of Florida is located, has special signal timing plans for special events. In order for these plans to work, all traffic controllers in the city must be connected to the central server. Football games pose a particular traffic challenge. Inbound football signal timing plans intend to keep traffic attempting to exit I-75 from queuing into travel lanes and outbound football signal timing plans intend to move traffic to I-75 and away from the stadium area as quickly as possible.

Benefits

  • Since implementation the spillback onto I-75 is greatly reduced and traffic takes about 90 minutes to disperse after football games rather than three to four hours.
  • It has reduced police overtime costs, improved safety, and reduced driver frustration.

Read more: ITS Benefits >> Deployment of special event signal timing plans has reduced queuing onto travel...

RFQ: Integrating UAS into Airports


TRB's Airport Cooperative Research Program (ACRP) has issued a request for qualifications to identify research teams with the appropriate experience and expertise to conduct research related to unmanned aircraft systems (UAS). Qualifications are due September 19, 2016.

After the Statements of Qualifications are received and reviewed, research teams will be invited to submit a specific proposal that includes a research approach, staffing plan, and a budget. Additionally, each selected team will be required to submit the necessary documentation required for the contracting process. It is expected that the research teams will be either private consultants, academics, or a consortium of both.

This Summary Last Modified On: 8/8/2016


Read more: RFQ: Integrating UAS into Airports

ITS Benefits >> Transit Signal Priority implemented in Chicago found a 4 to 15 percent reduction in bus travel time, 51 to 54 percent reduction in bus travel time variance, and annual fuel consumption savings of 131 gallons for bus routes 49 and X49.

This evaluation was conducted to identify the benefits of transit signal priority (TSP) at 10 TSP-equipped intersections for Route X49 buses and Route 49 buses along Western Avenue in Chicago. The evaluation was performed by comparing the Measures of Effectiveness (MOEs) for travel time, delay, time deviated from schedule, and number of delayed buses before and after TSP implementation. Transit data were collected from the field travel time runs, CTA real-time bus database, and TSP phase selectors for analysis. Percentage difference was used to quantify the improvements for these MOEs.

Methodology

The evaluation focused on transit mobility and reliability and was performed by comparing the Measures of Effectiveness (MOEs) for travel time, delay, time deviated from schedule, and number of delayed buses between before and after signal optimization, and before and after TSP implementation. Transit data were collected from the field travel time runs, CTA real-time bus database and TSP phase selectors for analysis. Percentage difference was used to quantify the improvements for these MOEs.

Benefits

The evaluation results indicate mobility and reliability were improved for Route X49 buses, Route 49 buses, and general traffic on a directional basis during the peak periods on the one-mile segment of Western Ave. (between Lyndale St. and Diversey Ave.) after TSP implementation. Transit benefits included:

  • Average bus travel time was reduced by 15 percent (2 minutes) for southbound X49 buses during A.M. peak and by 4 percent (0.5 minute) for northbound X49 buses during the P.M. peak.
  • Average bus delay was decreased by 24 percent (1 minute) for southbound X49 buses during A.M. peak and by 6 percent (0.3 minute) for northbound X49 buses during P.M. peak.
  • Average bus travel time variance was reduced by 54 percent (1.3 minutes) for the southbound X49 buses during A.M. peak and by 51 percent (1.2 minutes) for northbound X49 buses during P.M. peak.
  • Average time deviated from schedule was decreased by a range of 9 percent to 36 percent (29 seconds to 133 seconds) for northbound X49 buses in A.M. and P.M. peak periods at Diversey and Fullerton.
  • The number of delayed buses was decreased by a range of 20 percent to 60 percent (1 to 7) for northbound and southbound X49 buses during A.M. and P.M. peak periods at Diversey and Fullerton.
  • Annual fuel consumption savings was 131 gallons and annual emissions reduction was 17,737 grams for NO and 484 grams for PM for the total 5 TSP intersections.

Read more: ITS Benefits >> Transit Signal Priority implemented in Chicago found a 4 to 15 percent reduction...

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