ITEM 633 TRAFFIC SIGNAL CONTROLLERS
633.01
Description
633.02
Contractor Personnel Requirements
633.03
Materials and Equipment
633.04
Certified Drawings
633.05 General
633.06 Testing
and Prequalification
633.07
Controllers
633.08 Cabinets
633.09 Cabinet
Riser
633.10
Foundations
633.11
Controller Work Pad
633.12 Flasher
Controller
633.13
Controller, Master, Traffic Responsive
633.14 Remote
Monitoring Station
633.15
Communications
633.16 Training
633.17 System
Analysis
633.18
Uninterruptible Power Supply
633.19 Method
of Measurement
633.20 Basis of
Payment
633.01 Description. This work consists of
furnishing and installing traffic signal control equipment, including
controllers, cabinets, auxiliary equipment, and specified accessories,
completely wired, at the locations shown on the plans and ready for service.
633.02 Contractor Personnel Requirements. Conform
to the requirements of Supplement
1063 for the installation or testing of traffic signal equipment.
633.03 Materials and Equipment. Furnish
new materials and equipment of first quality, of current design, and free from
defects. For warranted items, “new” items shall have a manufacturing date
(determined by serial number) within one (1) year of the date of shipment to
the project as determined by the required warranty decal.
Use
electrical parts, wire, switches, and other elements of the installation
capable of carrying the required current without excessive heating or drop of
potential.
Ensure
that each item of equipment bears a nameplate, indelible marking, or brand that
identifies the type, model, catalog number, and manufacturer. Use
equipment conforming to the types, models, and systems specified.
Furnish
material and equipment conforming to:
Concrete
.... (cabinet
foundations and work pads)
.... QC Misc or QC 1 ………………………….. 499,
511
Conduit......................................
725.04, 725.051,
725.052
Controller
unit.......................................................... 733.02
Cabinet and auxiliary equipment..............................
733.03
Cabinet
riser............................................................. 733.04
Flasher
controller..................................................... 733.05
Controller, master,
traffic responsive....................... 733.06
Remote monitoring
station....................................... 733.07
Uninterruptible Power
Supply……………………. 733.09
633.04 Certified Drawings. Furnish
certified drawings according to 625.06.
633.05 General. Ensure that major items of
traffic signal control equipment used in combination are compatible,
interchangeable, and, whenever feasible, provided by the same manufacturer or
supplier.
Ensure that
controller cabinets are shop prewired according to 632.05.
Before starting
installation, furnish to the Engineer, two copies of each cabinet wiring
diagram, service manuals, and installation and maintenance instructions for
each installation, including all components and interconnections. Supply
one additional copy of the cabinet wiring diagrams in a clear plastic pouch
fastened to the inside of the controller door. Before beginning the
10-day performance test, replace or modify these documents as necessary to reflect
current conditions. Upon completion of the work and before its
acceptance, replace or modify the documents as necessary.
Transfer
manufacturers’ guarantees or warranties on all installed traffic signal control
equipment to the maintaining agency upon completion and acceptance of the
project.
If
required by the plans to install equipment furnished by others, store and care
of the equipment upon receipt.
633.06 Testing and Prequalification. For all
traffic control equipment, perform functional tests and a 10-day performance
test according to 632.28. Do not clear conflict monitor logs during the 10-day
test. Ensure that logs note power-up to start the test and all events
until the test is complete. Restart the test upon correcting a noted
event. Notify the Engineer at least 3 days before beginning the 10-day
performance test. The Engineer will notify the maintaining agency of the
beginning of the test. Ensure that the following testing and prequalification
requirements are met:
A. For traffic control equipment required
by this specification to meet NEMA Standards
Publication TS-1
or TS-2,
conform to the following:
1.
Furnish a certified test report indicating compliance to all requirements of NEMA Standards Publication TS-1
or TS-2
as applicable.
2.
Furnish the name and location of the laboratory testing facility as well as the
identification of the principal personnel who conducted the equipment testing
and a summary of their qualifications.
3.
Ensure that the laboratory provides Department representatives access to those
parts of the laboratory where the testing was done.
4.
Upon request, furnish a copy of the actual test data results for review and
analysis.
B. For traffic control equipment required
by this specification to meet CalTrans specifications,
use a product or manufacturer as stated in this specification that is listed on
the CalTrans Qualified Products List or applicable
ODOT Qualified Product List.
C. For Type 170/2070 controllers, use
conflict monitors listed on the Department’s prequalified list as specified in Supplement
1076.
633.07 Controllers. Install controller units,
consisting of the timing unit, software, and signal timing, into the specified
type of prewired cabinet.
Program controller units as shown on the
plans unless otherwise directed by the Engineer. If the
plan timing data or the supplemental timing data supplied by the Engineer does
not exactly fulfill the timing requirements of the installed equipment, notify,
in writing, the Engineer of the problem and identify the discrepancies.
The Engineer will consult with the maintaining agency and notify the Contractor
within 2 weeks. After programming, briefly operate controllers, with the
signals turned off by means of the signal shutdown switch, to ensure that
operation is reasonable and conforms to the plans.
If
the plans show two or more intersection controllers operated in a progressive
signal system, coordinate signals by relating the various controller cycle
start times to a zero time base, or other cycle start time at an adjacent
signalized intersection. Ensure that the controller unit software
provides coordination capability to allow associated controllers to be operated
within the progressive traffic system. Coordination equipment shall
supervise the operation of its associated controller by causing the end of
certain phases and the beginning of the following phases to occur at set
points. Program coordination timing according to the coordination timing
data shown on the plans or provided by the Engineer.
633.08 Cabinets. Mount cabinets by attaching to
pedestal or pole or by installing on a concrete foundation. Arrange
foundation mounted cabinets so that control equipment, terminal blocks, or shelves
are no closer than 6 inches (150 mm) to the top of the foundation. Attach
pole or pedestal mounted controller cabinets at a height that allows convenient
access to all controller components by service personnel.
Make
field connections for the conductors of signal cable, power cable,
interconnect cable, and detector lead-in cable. Neatly arrange and route
all field wiring to the appropriate terminal blocks. Identify field
wiring according to 725.02 except mark
with either indelible pen or embossed letters.
Except
for power wiring, fit field wiring entering the cabinet with spade terminals to
ensure a good connection. For incoming power wiring, either use spade
terminals or connect the bare conductor wire to terminal points utilizing screw
or spring applied clamping surfaces compatible with either copper or aluminum
wire and providing a positive grip. After completing field wiring, seal
the conduit entering the cabinet in an approved manner with a removable sealing
compound (no foam sealants), or a molded plastic or rubber device that is
compatible with the cable jacket, the insulation, and the conduit material.
For
foundation mounted cabinets, seal the joint between the controller cabinet and
the foundation with a quality, clear silicone caulk.
When
future phasing configurations are shown on the plans, furnish the cabinet and
hardware to accommodate the future operation through only the future addition
of load switches and detector units.
633.09 Cabinet Riser. Cabinet risers provide an
extension of the cabinet between the ground mounted
cabinet and the foundation. Bolt the riser to the foundation, and bolt
the cabinet to the riser.
Use
a type (size and shape) of cabinet riser compatible with the type of controller
cabinets specified for the project.
Seal
the joints between the controller cabinet and cabinet riser, and between the
cabinet riser and foundation with a quality, clear silicone caulk.
633.10 Foundations. Construct foundations for
controller cabinets according to 632.14, except
that excavation by earth auger is not required and the foundation does not
require reinforcing steel. Hold anchor bolts, conduit ells, and similar
appurtenances in the proper position until the concrete has set. Pour
foundations separately from controller work pad.
633.11 Controller Work Pad. Construct
controller work pad according to 608.03, except
that transverse joints are not required. Provide the top of the pad
nominally 1 inch (25 mm) above ground line. If the controller
cabinet has both front and back doors, the work pad shall encompass three sides
of the cabinet foundation to include the non-hinged cabinet door side of the
foundation. Pour controller work pad separately from foundations.
633.12 Flasher Controller. Furnish
and install a flasher controller with cabinet and mounting hardware when
indicated. The flasher controller is for the operation of flashing
beacons.
633.13 Controller, Master, Traffic Responsive. The traffic
responsive master controller supervises and controls the operation of an
interconnected system of local controllers. Ensure that the master
controller is able to communicate with a remote monitoring station.
Locate this master controller in a local intersection controller cabinet unless
otherwise shown on plans. If the local controller cabinet size is not
sufficient to accommodate the master controller and its associated wiring,
furnish the proper size cabinet for the local intersection controller to house
the local controller, master controller, modem, and all auxiliary devices.
633.14 Remote Monitoring Station. Install,
test, and operate the remote monitoring station, consisting of computer
equipment, communications equipment, and software, in one or more locations in
the maintaining agency’s facilities as shown on the plans. The
maintaining agency shall furnish telephone service at these stations.
633.15 Communications. Furnish a
broadband cellular modem from the Department’s approved
products list. The Maintaining Agency will arrange for the cellular
service and device activation.
Furnish
all necessary cabling to interface with the traffic signal controller.
Furnish an antenna that provides RSSI (Received
Signal Strength Indication) or no less than -95 dBm.
Provide all necessary cabling and surge suppression to connect the antenna to
the modem.
633.16 Training. Furnish training for the traffic
signal control equipment installed as part of the Contract. Furnish all
handouts, manuals, and product information. For the training, use the
same models of equipment furnished for the project. The maintaining
agency shall furnish the facilities in which the training will take
place. Furnish all media and test equipment needed to present the
training. Unless otherwise shown on the plans, the minimum training
requirements are as follows:
A. Sixteen hours on how to operate the
system, analyze system performance, and revise critical operating parameters.
B. Eight hours of field trouble-shooting
and maintenance procedures.
C. Eight hours of follow-up training
after the maintaining agency has operated the system for a minimum period of 30
days.
D. Four hours for preemption device
training if emergency vehicle preemption is shown on the plans.
A. General. Prepare signal timing and traffic progression programs,
load the programs into the signal system, evaluate the performance of the
system, and refine the programs as necessary to optimize traffic flow and
operation. Collect and evaluate traffic data, analyze traffic signal
progression and timing, develop traffic adjusted pattern selection parameters,
perform the system evaluation and refine the system operation, and prepare and
submit a summary report for review and approval by the Engineer.
If a project contains
individual sub-systems that are connected to the remote monitoring station,
perform all work as outlined in this subsection for each sub-system. If
required, analyze signal “sub-systems” together and coordinate traffic
progression programs to optimize the overall traffic flow between the various
sub-systems.
Optimize only the
cycle lengths, phase splits, permissives, and offsets
without changing the actual controller phasing provided in the plan.
B. Systems Engineer or Technician. Employ a systems engineer or technician to
perform the work required by this subsection and submit to the Engineer for
approval three copies of a resume documenting the following qualifications:
1.
A minimum of 5 years experience in traffic
engineering or traffic engineering technology.
2. The systems engineer or technician’s
education including training in traffic engineering technology and signal
system design.
3. The systems engineer or technician’s
familiarity with the closed loop system installed and experience in setting up and
fine tuning a system of that type. Furnish a list of other closed loop
systems that the systems engineer or technician has programmed into the traffic
responsive mode for documentation purposes.
Also, submit to the Engineer for approval a brief description of
proposed methodology of data collection and analysis of:
a.
System parameter usage in system evaluation.
b.
Frequency and measurement of travel time and delay.
c.
Comparison of actual versus system measurements of delays (level of service).
The systems engineer or technician, under authority of the Contractor,
is responsible for the operation of the system from the completion of the
signal system acceptance until completion and acceptance of the final summary
report by the Engineer. The systems engineer or technician shall provide
a 24-hour emergency phone number and shall respond to system related problems
as deemed necessary by the Engineer 24 hours a day, 7 days a week. If
there is a guarantee period, the Engineer reserves the right to request a
systems analysis throughout the entire duration of this period, if new or
continuing problems occur with the operation of the traffic responsive system.
The Engineer reserves
the right to request that the Contractor furnish a new systems engineer or
technician if the current systems engineer or technician fails to perform the
required duties in a timely and professional manner or fails to have a firm
understanding of the operation and programming of the closed loop system
constructed.
C. Traffic Programs. The systems engineer or technician shall
develop signal progression and timing programs from count and occupancy data
obtained from the local intersection and system loop detectors, supplemented by
field counts and measurements as required. The systems engineer or
technician shall develop the following signal progression programs and
parameters:
1.
One (a.m. peak) with offsets for inbound
preferential/balanced.
2.
One (p.m. peak) with offsets for outbound preferential/balanced.
3.
Two average (off peak/low volume). The two average programs should
utilize varying cycle lengths based on traffic volume, density, and occupancy
to minimize overall intersection approach delay time.
4.
One average (weekend peak). One of the off peak/low volume plans plans should accommodate the off peak weekend timeframe.
5.
One special program for either high congestion or queue backup.
6.
A minimum of six timing plans for a backup time base coordinated system.
The systems engineer or technician shall program the timing plans into the
system, to supplement the timing plans shown on the plans.
7.
Define system parameters that enable the system to automatically transfer into
a “free operation” mode during light traffic volume periods and to
automatically transfer to a computer selected coordinated mode during heavy
traffic volume periods. The systems engineer or technician shall
establish the following system parameters:
a.
Volume, occupancy and directionality thresholds.
b.
Transition smoothing factors.
c.
System detector assignment.
d.
System detector weighting.
The systems engineer
or technician may use the software provided with the remote monitoring station
to help assist in the analysis of the operation of the closed loop system.
D. System Travel Time Studies. The systems engineer or technician shall
conduct a series of travel time studies for each system or sub-system artery
constructed as part of the project, to measure the time it takes to travel from
0.25 mile (0.4 km) in advance of the beginning of each system or sub-system to
0.25 mile (0.4 km) after the end of that system or sub-system, in each
direction. Ensure that the travel time study parameters are based on the
posted speed limit; however, be aware that during peak periods it may not be
possible to obtain the posted speed due to larger traffic volumes.
The systems engineer
or technician shall conduct four separate sets of travel time studies for each
of the following field conditions:
1.
Before beginning construction, with the existing signal system in operation (no
lane closures shall be in effect during this analysis).
2.
Before implementing the traffic responsive mode, while the new traffic signal
system is operating under the “time of day” mode (as is shown on the plans).
3.
After placing the system(s) in the traffic responsive mode.
4.
After the system operation meeting and making final
system adjustments.
Each set of travel time
studies shall include a minimum of five runs through the system per
direction. The systems engineer or technician shall conduct travel time
studies during good weather conditions (i.e., no snow, rain, or fog). The
Engineer may omit the pre-construction travel time studies if the project
includes substantial changes to the roadway geometrics (i.e., roadway widening,
reconfiguring of pavement markings, etc.) that would affect the results of a
comparison of the level of improvement over preexisting conditions.
The four separate
sets of travel time studies shall include the following:
1.
Conduct the first set of travel time studies between the hours of 7:00 a.m. and
9:00 a.m. on weekdays.
2.
Conduct the second set of travel time studies between the hours of 11:30 a.m.
and 1:00 p.m. weekdays.
3.
Conduct the third set of travel time studies between the hours of 4:00 p.m. and
6:00 p.m. weekdays.
4.
Conduct the fourth set of travel time studies during any of the following
non-peak hour periods:
a.
9:00 a.m. to 11:00 a.m. Monday through Saturday.
b.
7:00 p.m. to 10:00 p.m. Monday through Saturday.
c.
7:00 a.m. to 10:00 p.m. Sunday.
The systems engineer or technician shall furnish a written report
documenting, at a minimum, the date of travel time study, day of week, time of
day, total time of travel, and total time the vehicle was stopped for each
trip.
The systems engineer or technician shall use the reports furnished from
each of the four field conditions for which system travel time studies are
prepared as one means of measuring the efficiency of the new system.
E. Draft System Summary
Report. The systems engineer or
technician shall prepare a draft system summary report after travel time
studies for the first three field conditions are performed. Submit two
copies each to the Engineer and the maintaining agency(s) of the signal system
for the evaluation and review of the system programming, operation, and
efficiency.
The report shall summarize the signal progression and timing programs
that were entered into the system. The report shall also include a copy
of the systems log after operating in the traffic responsive mode to verify the
number of programs used throughout the day as well as the frequency of program changes.
The systems engineer or technician shall provide a minimum of at least 4 days
of systems logs. The systems engineer or technician shall limit three of
the four logs to the weekdays of Monday through Friday; the fourth log shall be
on a Sunday. The systems engineer or technician shall include copies of
all data and analysis calculations for the system timing in the report.
The draft system summary report shall include an evaluation of the system
operation, efficiency, and performance and copies of all travel time study
data.
F. System Operation Meeting and Final
System Summary Report. After
the draft system summary report has been submitted, the Engineer will schedule
a meeting that includes the systems engineer or technician, the Contractor, the
Engineer, and representative(s) from the maintaining agency(s) to discuss the
operation of the traffic responsive closed loop signal system. This
meeting shall occur within 4 weeks after the draft system summary report has
been submitted to the Engineer and maintaining agency(s).
The purpose of this
meeting is to discuss the operation of the traffic responsive closed loop
signal system and to receive comments and recommendations from the Engineer
and/or the maintaining agency(s) regarding potential modifications to the
operation of the system. The systems engineer or technician shall answer
questions regarding the system summary report as well as the operation of the
closed loop system.
The systems engineer
or technician shall make final adjustments to the system as directed by the
Engineer to address any concerns discussed at this meeting. The systems
engineer or technician shall perform the final travel time study before
submitting the final report. The systems engineer or technician shall submit
one copy of a final system summary report to the Engineer and one additional
copy for each maintaining agency for review and approval. The final
report shall include any revisions to the draft report that are required as a
result of the system operation meeting.
633.18
Uninterruptible Power Supply (UPS).
Furnish and install a Battery Backup UPS system to provide uninterruptible,
reliable, emergency power to a traffic signal intersection in the event of a
power failure or interruption. The transfer from utility power to battery power
shall not interfere with the normal operations of the traffic controller,
conflict monitor or any other peripheral devices within the traffic control
system. The system shall be self-contained including all UPS hardware,
the required number of batteries and its own separate ventilated
enclosure. A ground rod shall be provided for free-standing UPS cabinets.
633.19 Method of Measurement. The
Department will measure Controller Unit, Type ___, with Cabinet, Type ___ by
the number of each complete unit, and will include controller unit with
software, all required auxiliary equipment, loop detector units, and a prewired
cabinet, with all items completely wired and tested. Ground mounted
cabinets will include anchor bolts and conduit ells for installation in the
foundation. Pole mounted cabinets will include pole mounting hardware.
The
Department will measure Controller Unit, Type ___ by the number of each
controller timing unit with software, and will include any signal timing programming
or installation. The Department will measure Controller Unit, Type ___,
Furnish Only by the number of each controller timing unit with software, and
will exclude any signal timing programming or installation.
The
Department will measure Cabinet, Type ___ by the number of each complete
prewired cabinet installed, and will include all required auxiliary equipment
and loop detector units (excluding controller unit), with all items completely
wired and tested. Ground mounted cabinets will include anchor bolts and
conduit ells for installation in the foundation. Pole mounted cabinets
will include pole mounting hardware. The Department will measure Cabinet,
Type ___, Furnish Only by the number of each complete prewired cabinet, and
will include pole mounting hardware and anchor bolts, but will exclude
installation, controller unit, and detector units.
The
Department will measure Cabinet Riser by the number of each unit, and will
include materials, mounting hardware, and installation.
The
Department will measure Cabinet Foundation and Controller Work Pad by the
number of each complete unit, in place, complete and accepted, and will include
excavation, concrete, backfilling, and disposal of surplus excavation.
Cabinet foundation will include preformed joint filler between the foundation
and adjacent paved areas. One complete Controller Work Pad unit may
encompass several sides of a controller cabinet installation.
The
Department will measure Flasher Controller by the number of each complete
flasher assembly with cabinet installed and tested.
The
Department will measure Controller, Master, Traffic Responsive by the number of
each unit, and will include installation, signal system software, programming,
and any increase in cabinet size to house the master controller in the local
intersection cabinet. The Department will measure Controller, Master,
Traffic Responsive, Furnish Only by the number of each unit, and will include
software, but exclude any programming or installation.
The
Department will measure Remote Monitoring Station by the number of each
location shown on the plans, and will include all equipment, testing, and
software.
The
Department will measure Communication service by the number of each location
shown on the plans for furnishing Communication service to an intersection
controller, and will include the modem, conduit, trenching, and wiring.
The
Department will measure Training on a lump sum basis, and will include
providing the instruction materials, instructor travel expenses, and test or media
equipment for presenting the training material.
The
Department will measure System Analysis on a lump sum basis, and will include
providing all materials, labor, software, printing reports, and incidentals to analyze
all traffic responsive sub-systems included in the project.
The
Department will measure Uninterruptible Power Supply by the number of each and
will include all equipment, testing and certifications.
633.20 Basis of Payment. If a
project contains individual sub-systems that are connected to the remote
monitoring station, the cost for performing work, as specified in 633.17 is incidental to the bid item price for
System Analysis.
The
costs to obtain and maintain telephone service of cellular by the supply agency
are included under Communications.
The
Department will pay for accepted quantities at the contract unit prices as
follows:
Item
Unit
Description
633
Each
Controller Unit, Type ___,
with Cabinet, Type ___
633
Each
Controller Unit, Type ___
633
Each
Controller Unit, Type ___, Furnish Only
633
Each
Cabinet, Type ___
633
Each
Cabinet, Type ___, Furnish Only
633
Each
Cabinet Riser
633
Each
Cabinet Foundation
633
Each
Controller Work Pad
633
Each
Flasher Controller
633
Each
Controller, Master, Traffic Responsive
633
Each
Controller, Master, Traffic
Responsive, Furnish Only
633
Each
Remote Monitoring Station
633
Each
Communications
633
Lump
Sum
Training
633
Lump
Sum
System Analysis
633
Each
Uninterruptible Power Supply