Arterial Management Program

Appendix B. Survey Responses

Traffic Network Characteristics

Agency Grid
(number of signals)
Arterial
(number of signals)
Isolated
(number of signals)
Agency A 390 314 76
Agency B 135 415 451
Agency C 85 362 175
Agency D 0 25 90
Agency E 180 80 40
Agency F 200 525 75
Agency G 350 (CBDs) 1050 1400



 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
% AADT Growth per year Varies by roadway; Annual Count report published on website
http://www.lee-county.com/ publicworks/Traffic/2007%20Count %20Report2.pdf
 1% Approx 2%-4% 3%-5% N/A Not measured statewide.
% signals operating under saturated conditions during peak hour Approx 30%  3.2% Approx 15% 200 40 15% est. statewide
% Signals operating at saturated conditions for at least one yhour in excess of peak hour Approx 30%  0.8% 5% 150 50 2%
Type of jurisdiction County Major city County (responsible for City suburbs, some state signals, and rural signals Mid-size suburban city Major city  Statewide – Georgia
% Growth in signals per year 6%  < 1.0% Approx 4% 1% 5-10 new signals per year 3%

Classification of Signal System Characteristics


 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Adaptive (e.g., SCOOT, SCATS, OPAC, RHODES)* Operate approximately 12% in traffic responsive 0 None 0 None  None deployed within GDOT's jurisdiction (Cobb Cty has a SCATS system)
Closed loop with data developmental tools (e.g., ACS Lite) including isolated signals are controlled by this type of system* None 0 Arles – 47 signals 0 0  0
Other type of interconnected system None  Hardwire – 7 signals 0  800 0
Isolated signals with automatic failure reporting 0  0 0 0  150
Isolated signals without automateic failure reporting 76 450 no system – 175 30% Approx 60  1250
Proximity of Signals to Maintenance Facility
Number of signals within 5 miles of maintenance facility 76  Approx. 481 About 100 Approx. 170 200 175
Number of signals between 5 and 10 miles from maintenance facility 57  Approx. 125 About 15 Approx. 120 500 250
Number of signals greater than 10 miles from maintenance facility 257  Approx. 20 0 Approx. 10 100 1250
Controller Classification
Number of 170 family controllers 0 50 0  0  0
Number of ATC/2080 family controllers 0 150 0 112 Approx. 180  2800
Number of NEMA TS1 controllers 40% 625 222  Approx. 120  0
Number of NEMA TS2 controllers 60% 75 405 3 0 800 0
Age of Field Equipment
Number of controllers less than 5 years old 150 275 Approx. 160 115 80  1000
Number of controllers between 5 and 10 years old 400 125 Approx. 345 0 120 600 1800
Number of controllers greater than 10 years old 50 600 Approx. 222 0 100 200 0
Number of Ancillary Devices Present
Preemptive/priority 20 50 351 Approx. 60 1 25 locations have fire house or rail road 70
CCTV 3 0 75 9 60 180 2
Changeable message signs 0 0 2 0 13 No static VMS, 5 portables 0
UPS 18 4 0 9 0 0 now, but beginning a program to install 250 100
Communications – Number of signals controlled by:
7 wire cable 0 0 10 0 0  0
Twisted wire pair 292 30 20 on Arles 0 170 800 200
Fiber optics 5 193 directly, 319 remotely 100 70 7  300-500
Coaxial cable 0 0 305 0 0  0
Wireless 20 8 10 0 13  50
Non-owned communication service (identify) Leased-line 0 37 DSL service – 1 (connects to closed loop fiber system); dial up phone connecting to fiber system – 2; dial up phone to isolated system - 1   0
Redundancy Characteristics of System
Redundancy of central controls Software/server based, can be transferred to backup if necessary 0 2 servers, 1 spare communications server    Backup data hourly, and off-site. New system will be full redundant hot swap. 0
Redundancy in backbone communications Majority of center to field communications by PSTN 0 Some alternate paths Starting to implement Ethernet backbone with rerouting   This is beyond our control. there is limited redundancy due to county budgets. 0
Redundance in distribution communications to field Limited, utilize radio communications for longer duraction & significant failures of twisted pair 0 Some alternate paths    0
*Relate to signals that actually operate under the conditions described.

Traffic Detection


Agency Local Actuation Detectors System Detectors
Inductive Loop Video Processor Detector Radar, Microwave Other Inductive Loop Video Processor Detector Radar, Microwave Other
Agency A 2200 125 0 0 260 15 0 0
Agency B 98% 1% 1%
Agency C  0 < 20 0  0 0 0
Agency D Everything else 10
Agency E 60% 40%   100%
Agency F All other 100 35  1500
Agency G 14000 500   200 500


 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Number of Detectors Actually Operating
Local actuation detectors 2300 95% All but approx. 50 95%  All other 14300
System detectors 275     400 less than 100
Are detectors periodically checked for operability (in the case of video processor detectors, are they checked under poor lighting and weather conditions)? Through PMs and routine monitoring of central system software features On yearly PMs and maintenance visits Yes, annually Yes for indictive loops When complaints are made No due to limited staffing resources Through PM and trouble calls
Typical Detector Configuration
% of intersections that operate fully actuated: advanced & limit line detection on main street, limit line detection on side street approaches 1% 75%  100% 30% 5% This is not a standard design for GDOT, maybe 2% of signals have this detector configuration
% of intersections that operate fully actuated: advanced detection on main street & limit line on side street 98% 12%   70% 5% 93%
% of intersections that operate semi-actuated: no detection on main street, limit line detection on side street 1% 0%    75% 5%
% of intersections that operate with no detection 0% 13%    20% CBD areas - 2 large ones 0%
Is detector data analyzed on a regular basis? how is the data used? Not applicable. No To look at on the spot traffic flow, real time volume, peak hours, and yearly trends in ADT No No. Detector data is not used. Not at this time due to old system No
CCTV
How many cameras are available? 2 CCTV, 8 dial up 0 75 7 60 180 2
Is CCTV used to support online adjustment of timing plans? Yes  Yes Yes Yes Yes n/a
Is CCTV used to support planning for signal timing/phasing?   Yes Yes Yes Yes n/a
Is CCTV used to support incident management? Yes  Yes Yes Yes Yes some
Timing Plan Characteristics
Number of daily timing plans 4 to 6 3 to 5 7 6 (am, am off-peak, midday, midday off-peak, pm, pm off-peak) 4 Typical 3 dial operations AM, PM, and off peak Varies; typically 4, am, noon, pm, free
Other periodic timing plans (e.g., weekends, special events) 2 to 4 2 to 3 2 Holiday plans around shopping areas, specieal event plans around amphi-theater, occasional marathon or bike race special plans. Yes Weekend peak and off peak as well as special plans Developed on a case by case basis
Non-periodic timing plans (e.g., diversion, emergency evacuation) 15 0 1  Yes Emergency evac plans and do detour plans daily None

Timing Plan Characteristics


 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Operations Characteristics
Frequency of timing plan updates, phasing plan checks, warrant reviews? Major every 2-3 years 5-7 years As required Signals retimed every 2 yera, no warrant reviews Goal is every 3 years Timings reviewed daily from airplaine and cameras. We do not do warrants; the studies group does 1-3 years, varies
Is a staffed TMC used, if so what is the operating period? 6am-9pm 7:30am-4pm 6am-6pm weekdays Traffic engineer works out of TMC, but not with specific staffing hours 0700-1900, and during special events 20 hours a day, 7 days a week, 5am-3:30pm
Co-location with other traffic operations or police agencies? No No Yes, state freeway management system; state police Yes No Yes, transit is in same room as traffic; all colocated in PCSCC with 9-1-1 and EOC
Maintenance Practices
Allowable time to repair signal failure during business hours 2 < 60 minutes  ASAP 1 hour 30 minutes Techs are on 24 hour call, regular shift is 8 hours. Time to repair is 2 hours both on and off shift.
Allowable time to repair signal failure during non-business hours 4 < 2 hours  1 hour 2 hours 30 minutes to 1 hour 2 hours, techs earn comptime outside of working hours
Allowable time to repair ancillary equipment (detectors, preemption equipment, etc.) 48   No policy 2 weeks Pre-empt is more important try to fix it that day. Det. and stuff can be a year or more depending on funding 1 week
Allowable time to repair communications 48   No policy 2-3 days 30 minutes when possible Depends on type of media; typically 1 week.
Availability (up-time) for central equipment 24/7   100%  99.9999% 24/7
Identify routine maintenance practices    No policy
Actual time to repair signal failure during business hours 1   Depends on the problem, crews respond immediately upon call 1-2 hours 30 minutes or less 2 hours from onsite time
Actual time to repair signal failure during non-business hours 2   on-call techs will arrive w/in an hour, time to fix depends on problem 1-3 hours Under 1 1/2 hours 2 hours from onsite time
Actual time to repair ancillary equipment (detectors, preemption equipment, etc.) 24   varies 2 hours - 2-3 days Depends on equipment Typically 1 week
Controller failure per year Estimated avg. 4 per/yr   3 this year 10-20 per year Routine failures due to storms 10-20%

Resource Issues


 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Budgets and Personnel (including consultants)
Management budgets and personnel hours for each of: supervision, planning, system engineering $230,000     These functions come from inside our general fund budgets and most are not specifically funded. We have to alter people's work assignments and find ways to complete things. Unable to quantify budget amount. this accounts for all districts, maintenance, consultant, and loop contracts.
Operations budgets and personnel hurs for each of: TOC operations, signal timing including data collection TOC approx. $190K, signal timing approx. $125K     We do have 1 ATMS engineer but he is paid from several general and CIP funds. The TMC general budget is about $800K and mostly covers salaries, vehicle changes, and benefits Allocated by district
Maintenance
Maintenance of signals (department budgets, contract bugets, personnel) $897K     This work is performed by in house staff in TMC and our signal shop. TMC general budget is about $800K and mostly covers salaries, vehicle changes, and benefits
Maintenance of other equipment (detectors, preemption equipment, etc.) (department budgets, contract budgets, personnel) $100K     This work is performed by in house staff in TMC and our signal shop. The general budget from several accounts for equipment is about $400K to maintain stuff
Training
Does the agency have a formal training plan? Yes Yes  Unavailable No No No
Does the agency provide the cost for training? Yes Yes  Unavailable No Yes, minimal budget less than $5K
What training resources are available locally? IMSA Community college & university courses  Unavailable None ITE, IMSA No
Is IMSA certification required for maintenance personnel? Yes Yes  No, but most have Desired, not required No No
Is PTOE/PE certification required for engineering personnel? No    For principal engineers and higher No
Percentage of operating budget spent for training 1%   Unavailable 0% Less than 1% 1%
Type of operations training    Unavailable None On job training Vendor training
Percentage of maintenance budget spent for training 1%   Unavailable None None 1%
Type of maintenance training    Unavailable Internal, on as- needed basis On job training Vendor training
Growth – Do O&M budgets increase with signal growth on an annual basis? Generally as funds are available No  roughly No Not by much; it is hard to get maintenance dollars. New construction is easier. No relationship
Practices and Constraints
Use of owned or leased communication facilities Discontinuing Discretionary  Allowed  We use all our own copper and fiber. We have 30 data circuts we lease, but those will go away as we expand our new signal system. Owned
Use of own staff or contract maintenance Use of own staff Discretionary  All in-house Required Both Blended, several maintenace contracts exist.
Use of own staff or consultants for engineering Ltd. use of consultants Discretionary  Some of each Discretionary Both Blended, some signal timing is done in house, some is contracted out.
Staffing Issues
Pay as compared with peer agencies in the region (higher, approx. the same, lower) unavailable Lower  Approx. the same Approx. the same Slightly above peers, but not high enough. State is lower, staff is typically lost to consultants or other jurisdictions
What is the average tenure of engineering employees? 12 yrs   10-15 yrs > 10 yrs 10 yrs 10 yrs
What is the average tenure of maintenance employees? 6.5 yrs   5-20 yrs > 10 yrs 10 yrs 5 yrs
What is the number of vacant engineering and maintenance positions? 1 eng./2 maint. 3  0 0 2 0 vacant due to elimination by gov. to compensate for budget shortfall. 5 vacancies statewide prior to buget cut.

Management


 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Is a mission statement available? Yes Yes  No No Yes GDOT overall and TMC overall; nothing specific to traffic signals
Is a concept of operations available? For operations center, under development No  No No No No
Are operating procedures available? Yes Yes  No No No There are documented processes to collect counts, operate TMCs, and develop signal timing.

Staff Capability Level


Position Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Number of staff in Position Quals – Training / Experience Level Number of staff in Position Quals – Training / Experience Level Number of staff in Position Quals – Training / Experience Level Number of staff in Position Quals – Training / Experience Level Number of staff in Position Quals – Training / Experience Level Number of staff in Position Quals– Training / Experience Level Number of staff in Position Quals – Training / Experience Level
Management 1.5  1    1 PE, 10+ yrs 2  1   8 districts, 7 district traffic
Traffic Signal Engineer 1.5  1    1 PE, PTOE, 10+ yrs 2  3   8
Traffic Signal Analyst / Tech 2  0    1 10+ yrs 5  These are the TMC techs   43
ITS Engineer 0.5  0    0  1  1   None assigned to traffic signals
Traffic Signal Maintenance Tech 7 techs, 3 sr techs 3 yrs Electrical exp. min. IMSA II signals, IMOT 12    6 varies 5  14   Same as signal analyst tech
Electronic Specialist None  4    0       3
TMC Operators 2.5  1    0  4  7   0
PR Coordinator 1  0    0       0

Objectives and Performance Measurement

 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Are summary performance reports prepared and reviewed periodically?  Minimally  Annually  No B&A conducted after retiming, monthly and annual reports are prepared.

Planning Issues


 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
What causes the staff size to change? Growth Resignations  Pretty constant  People leaving, vacations, hiring freezes Budget cuts
How far into the future do you plan? 3-5 years 5 years  2-5 years  We try to plan 5 years out, but our budget cycles are only 2 years. 3-5 years
What upgrades or updates do you plan? Updates to control equipment, major PMs updates to operations center, routine signal timing updates ITS upgrades  Roadway improvements  New sigan system is what we are working on for the next 6 years. TS controllers, tactics software with adaptive capability is envisioned.
Do you have planning documentation that is available for review? Examples include business plans, resource models, maintenance checklists, concept of operations    No  Con Ops and Require Program plan for deploying 2070 controllers

Communication to the Public


 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Do you provide information on incidents, construction, special events, and congestion through:
Changeable Message Signs portable message signs used as necessary   No Yes  0
Website Yes   Yes Not yet  None
Media    Yes Not yet  None
Other      TARS sites None

Feedback from the Public


 Agency A Agency B Agency C Agency D Agency E Agency F Agency G
Do you seek feedback from the public on its perception of agency performance through such means as surveys or other proactive techniques?  Mail out surveys  Surveys City's website is used. Citizens can enter questions, complaints, and comments to staff. Our feedback comes from everyday calls and letters. We also get feedback from the media that we work with. No
Do you have a telephone hotline or a website that failitates feedback from the public? Yes, SOC phone # adnd request for action program Yes  Yes, both See above. No telephone hotline yet due to limited staff in TMC. Division have phone numbers and email where people can contact us. Trouble calls; each distric tracks its own calls.

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