SIGNAL SYSTEM RETIMING EXPERIENCE

 

 

A traffic signal retiming project for 17 intersections along Palm Coast Parkway, Belle Terre Parkway, and Cypress Point Parkway in Flagler County, Florida.  Client: Ayers Associates and City of Palm Coast   This urban network of arterials includes a diamond interchange and a number of one-way road segments.  Work included microcomputer analysis using Synchro to identify progression opportunities along with field implementation and fine-tuning of the timings.  Lead-lag phasing was used to maximize arterial greenbands.

 

A retiming project for 18 signals on Roosevelt Boulevard (US 17) in Jacksonville, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this busy corridor which carries both downtown commuter traffic and traffic generated by Jacksonville Naval Air Station, the largest employment location in Northeast Florida.  Many of the signals along the corridor have railroad preemption and it was necessary to accommodate the railroad preemption in developing the revised timing plans.  The presence of a number of continuous thru lanes along the corridor also required special consideration. 

 

A retiming project for 37 traffic signals on San Jose Boulevard (SR 13) in Duval County, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this heavily-traveled commuter route through the field implementation of a series of new timing plans.  The corridor was divided into logical subsections with separate timing plans tailored to each subsection.

 

A traffic signal retiming project for 9 signals along Newberry Road (SR 26) in Alachua County, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this six-lane arterial through the field implementation of new coordinated timing plans.  The final timings were uploaded to the central database of the City of Gainesville's closed-loop traffic control system. 

 

A traffic signal retiming project for 40 signals on Blanding Boulevard (SR 21) in Clay County, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this heavily-traveled commuter route through the field implementation of new AM-peak, PM-peak, Off-peak and "shoulder-period" timing plans.  Both hard-wire and time-based interconnection was used to provide the needed coordination and a special phasing scheme was developed for the compressed diamond interchange in the middle of the corridor.

 

A retiming project for 6 traffic signals along US 301 in Starke, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this major truck route through the field implementation of new coordinated signal timings. 


 

A traffic signal retiming project for 12 signals on Cassat Avenue (SR 111) in Jacksonville, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this heavily-traveled commuter route.  A unique "triangular" coordination plan was developed to accommodate peak hour traffic for three intersecting state roads.

 

A signal retiming project for 13 signals along Dale Mabry Boulevard in Hillsborough County, Florida.  Client: Florida Department of Transportation - District 7  Coordinated traffic flow was achieved along this heavily-traveled commuter route through the field implementation of new timing plans.  Both central UTCS timings and controller-based TOD (back-up) timings were implemented.

 

A traffic signal retiming project for 6 intersections along Emerson Street in Jacksonville, Florida.  Client: Florida Department of Transportation - District 2  This heavily-traveled stretch of urban arterial includes a diamond interchange and a discount mall.  Work included both time-space diagram and microcomputer analysis to identify progression opportunities and appropriate signal timings.  Lead-lag phasing was used to maximize arterial greenbands.

 

A traffic signal retiming project for 5 intersections along US 98 and SR 293 in Okaloosa County, Florida.  Client: Griffin Signals/Florida Department of Transportation - District 3  US 98 and SR 293 serve the white-sand beaches of Florida's panhandle and are driven by many out-of-state tourists. Work included both time-space diagram and microcomputer analysis to identify progression opportunities and appropriate signal timings.  A separate set of timing plans were developed for the tourist season.

 

A traffic signal retiming project for 10 signals along University Avenue in Gainesville, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this four-lane arterial that passes directly in front of the University of Florida.  The development of efficient pedestrian timings was critical in this area.  The final timings were uploaded to the central database of the City's closed-loop system. 

 

A retiming project for 23 signals on University Boulevard (SR 109) in Duval County, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this circumferential arterial through the field implementation of a complete set of new timing plans.

 

A signal retiming project for 4 signals along Gandy Boulevard in Tampa, Florida.  Client: Florida Department of Transportation - District 7  Coordinated traffic flow was achieved along this stretch of roadway which is located at the foot of the Gandy Bridge.  Peak period queues were virtually eliminated as a result of this retiming.

 

A traffic signal retiming project for 32 signals on Atlantic Boulevard (SR 10) in Jacksonville and Neptune Beach, Florida.  Client: Florida Department of Transportation - District 2  Coordinated traffic flow was achieved along this heavily-traveled commuter route.  A unique set of "dual-peak" plans were developed to accommodate the bi-directional peak hour traffic caused by an overlap in CBD commuter traffic and traffic associated with the nearby Mayport Naval Base along the eastern end of the corridor.  Special Christmas shopping season timing plans were also developed for the Regency Mall Area.

 

The retiming of over 300 additional traffic signals covering 20 major corridors in Northeast and Central Florida.  These include some of the most heavily traveled corridors in Florida and involve time-based systems, hard-wire interconnect systems, closed-loop systems, and UTCS systems.  A host of innovative timing and phasing techniques, including such items as external phase holds, time-of-day switchable lead/lag operation, and detector switching, were used to facilitate progression and reduce cycle failures.  Improved timings were both developed and successfully implemented as part of this work.  Before and after travel time runs were used to document the sizeable monetary savings associated with the retiming effort.  Work included:

 

  o        A retiming project for 16 traffic signals along 13th Street in Gainesville, Florida.

  o        A retiming project for 5 traffic signals along US 41 in Brooksville, Florida. 

  o        A retiming project for 7 traffic signals along US 19 in Clearwater, Florida. 

  o        A retiming project for 22 traffic signals along SR 115 in Duval County, Florida. 

  o        A retiming project for 12 traffic signals in the SR 20 network; Gainesville, Florida.

  o        A retiming project for 7 traffic signals along Archer Road (SR 24) in Gainesville, Florida.

  o        A retiming project for 8 traffic signals along Reid Street in Palatka, Florida.

  o        A retiming project for 10 traffic signals along Normandy Blvd. (SR 228) in Jacksonville, Florida.

  o        A retiming project for 16 traffic signals along 103rd Street (SR 134) in Jacksonville, Florida.

  o        A retiming project for 13 traffic signals along Philips Highway (US 1) in Jacksonville, Florida.

  o        A retiming project for 25 traffic signals along Beach Boulevard (SR 212) in Jacksonville, Florida.

  o        A retiming project for 7 traffic signals along Dunn Avenue in Jacksonville, Florida.

  o        A retiming project for 11 traffic signals along Lane Avenue in Jacksonville, Florida.

  o        A retiming project for 14 traffic signals along Southside Boulevard (SR 115) in Jacksonville, Florida.

  o        A retiming project for 11 traffic signals along Baymeadows Road in Jacksonville, Florida.

  o        A retiming project for 7 traffic signals in the Post/College Street network; Jacksonville, Florida.

  o        Timing of the SR 9A/Atlantic Boulevard single-point urban interchange; Jacksonville, Florida.

 

 

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This page was last updated on 02.26.08