HomeMy WebLinkAboutResolution 2003-041
Resolution No. 2003-041
BE IT SOLVED by the City Council of the City of North Richland Hills,
Texas, that:
The City Manager be, and is hereby authorized to execute the attached
Agreement for Engineering Services for the Traffic Signal Light Communication
2003 Project, as an act and deed of the City.
PASSED AND APPROVED this the 14th day of April
APPROVED AS TO FORM AND LEGALITY:
APPROVED AS TO CONTENT:
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~ike 'èurtis, .E., ublic Works Director
Contract #
This AGREEMENT is made and entered into this
CITY OF NORTH RICHLAND HILLS, TEXAS
PUBLIC WORKS CONTRACT
AGREEMENT FOR ENGINEERING SERVICES
\~ day of ~V\ {
,2003,
by and between THE CITY OF NORTH RICHLAND HILLS, hereinafter called the OWNER, and KIM LEY-HORN and
ASSOCIATES, INC. , a corporation hereinafter called the ENGINEER.
RECITALS
This AGREEMENT is applicable to the furnishing of Basic and Special Engineering Services by the ENGINEER to the
OWNER for the design and construction of SPREAD SPECTRUM RADIO COMMUNICATION SYSTEM for City
Traffic Signal System hereinafter called the PROJECT.
CONTRACTUAL UNDERTAKINGS
SECTION I
EMPLOYMENT OF ENGINEER
The OWNER agrees to employ the ENGINEER and the ENGINEER agrees to furnish the Basic and Special
Engineering Services in connection with the PROJECT as stated in Section II following, and for having rendered such services
the OWNER agrees to pay to the ENGINEER compensation as stated in Section VI following.
SECTION II
CHARACTER AND EXTENT OF SERVICES
1. The BASIC ENGINEERING SERVICES, to be rendered by the ENGINEER, include and are limited to the Scope of
Services outlined in Attachment "A".
SECTION III
AUTHORIZATION OF SERVICES
No professional services of any nature shall be undertaken by the ENGINEER under this AGREEMENT until he has
received written authorization from the OWNER.
SECTION IV
PERIOD OF SERVICE
This AGREEMENT shall be effective upon execution by the OWNER and the ENGINEER, and shall remain in force
until terminated under the provisions hereinafter provided in Section X.
SECTION V
COORDINATION WITH THE OWNER
The ENGINEER shall hold periodic conferences with the OWNER, or its representatives in accordance with the Scope
of Services, to the end that the project shall have full benefit of the OWNER'S EXPERIENCE AND KNOWLEDGE OF
EXISTING NEEDS AND FACILITIES, AND BE CONSISTENT WITH ITS CURRENT POLICIES AND CONSTRUCTION
STANDARDS. To implement this coordination, the OWNER shall make available to the ENGINEER for use in planning the
project, all existing plans, maps, field notes, statistics, computations and other data in his possession relative to existing
facilities and to the project without additional cost to the ENGINEER, and upon which the ENGINEER may rely.
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SECTION VI
THE ENGINEER'S COMPENSATION
For and in consideration of the Basic and Special Engineering Services to be rendered by the ENGINEER, as cited in
Section II above, the OWNER shall pay and the ENGINEER shall receive the compensation hereinafter set forth:
1. BASIC ENGINEERING SERVICES
Compensation for the Basic Engineering Services (Project Definition, Review Meetings, Management, and
Control, Signal System Communications Design, Bidding, Construction Contract Administration, and Signal Timing
Optimization) phases of the PROJECT, the ENGINEER will provide the services described in the Scope of Services on
a lump sum basis. All permitting, application, and similar project fees will be paid directly by the OWNER and are in
addition to the ENGINEER's total compensation. The total compensation to the ENGINEER for the Basic Engineering
Services shall be $87,500 without additional negotiation and authorization.
Payment to the ENGINEER shall be due in monthly installments made upon receipt of an invoice from the
ENGINEER including an amount charged based upon the percentage of services completed as of the invoice date.
2. ADDITIONAL SERVICES (if needed)
Services other than those set forth in the Scope of Services shall constitute Additional Services. Additional
Services, such as attendance at meetings other than those included in the Scope of Services, or any others, shall be
performed only with OWNER's authorization, and shall be computed the same as Basic Engineering Services.
Additional Services will be in addition to the total amount in sub-paragraph 3 below.
3. TOTAL COMPENSATION
Total compensation to the ENGINEER for "Basic Engineering Services", ($87,500), shall be the lump sum
amount of $87,500 without additional negotiation and authorization.
The compensation for engineering services stated does not include sales tax. If the State of Texas imposes a
sales tax on engineering services during the time of this contract, then the Owner agrees to pay the sales tax as an
extra payment, above and beyond the agreed compensation for engineering services.
SECTION VII
REVISION OF REPORTS, PLANS, SPECIFICATIONS
AND OTHER DOCUMENTS
The revision and redrafting of reports, plans, specifications and other documents during the formative stages as an
orderly process in the development of the project to meet the needs of the OWNER shall be considered as part of the Basic
Engineering Services; however after a definite plan has been approved by the OWNER, if a decision is sUbsequently made by
the OWNER, which, for its proper execution involves extra services and expenses for changes in, or additions to the drawings,
specifications or other documents, or if the ENGINEER incurs extra labor cost or expenses due to delays imposed on him from
causes not within his control, the ENGINEER shall be compensated for such extra expense which shall be considered as
Special Services. The ENGINEER is responsible for notifying the OWNER as soon as possible if this circumstance arises.
SECTION VIII
OWNERSHIP OF DOCUMENTS
Original documents, plans, design and survey notes represent the product of training, experience, and professional
skill, and accordingly belong to, and remain the property of the ENGINEER who produced them, and the OWNER regardless of
whether the instruments were copyrighted or whether the project for which they were prepared is executed.
The OWNER shall be furnished with three sets of record drawinos. one set of labeled aperture cards of record
drawino plan sheets. and a CD-ROM containino a reproducible COpy of all reports. orioinal drawinas. opinion of probable
construction cost. field notes. and data. The OWNER will use these plans and data in connection with the project only as
a source of information as to construction. Any electronic copies given out by the OWNER will not contain the
ENGINEER's seal.
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SECTION IX
COMPLETION SCHEDULE
See Attachment "B" for completion schedule.
SECTION X
TERMINATION
Either party to this AGREEMENT may terminate the AGREEMENT by giving to the other 30 days notice in writing.
Upon delivery of such notice by the OWNER to the ENGINEER, the ENGINEER shall discontinue all services in connection
with the performance of this AGREEMENT and shall proceed to cancel promptly all existing orders and contracts insofar as
such orders or contracts are chargeable to this AGREEMENT. As soon as practicable after receipt of notice of termination, the
ENGINEER shall submit a statement, showing in detail the services performed under this AGREEMENT to the date of
termination. The OWNER shall then pay the ENGINEER promptly that proportion ofthe prescribed charges which the services
actually performed under this AGREEMENT bear to the total services called for under this AGREEMENT less such payments
on account of the charges as have been previously made. Copies of all completed or partially completed designs, plans and
reports prepared under this AGREEMENT shall be delivered to the OWNER when and if this AGREEMENT IS TERMINATED,
but subject to the restrictions, as to their use, as set forth in Section VIII.
SECTION XI
LIABILITY
The ENGINEER agrees to indemnify, and hold City whole and harmless against any and all claims for damages, costs,
and expenses of persons or property that may arise out of, or be occasioned by, or from any negligent act, error or omission of
ENGINEER, or an agent, servant, or employee of ENGINEER in the execution or performance of this Contract, without regard
to whether such persons are under the direction of City agents or employees.
The ENG INEER agrees to carry an errors and omissions type of professional liability insurance policy and will furnish
the OWNER a certificate of insurance for the OWNER'S file.
SECTION XII
SUCCESSORS AND ASSIGNMENTS
The OWNER and the ENGINEER each binds himself and his successors, executors, administrators and assigns to any
other party of this AGREEMENT and to the successors, executors, administrators, and assigns of such other party, in respect
to all covenants of this AGREEMENT. Except as above, neither the OWNER nor the ENGINEER shall assign, sublet or
transfer his interest in this AGREEMENT without the written consent of the other. Nothing herein shall be constituted as
creating any personal liability on the part of any officer or agent of any public body which may be a party thereto.
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SECTION XIII
SPECIAL CONDITIONS
Special conditions, under the AGREEMENT, include and are limited to those listed hereinafter; the conditions shall
become part of the AGREEMENT:
Other provisions contained in the written "Authorization of Services", issued by the OWNER, under Section III,
and accepted by the ENGINEER, shall become part of the AGREEMENT.
EXECUTED in three counterparts (each of which is an original) on behalf of ENGINEER by its VICE PRESIDENT,
as shown below, and on behalf of the OWNER by its CITY MANAGER (thereunto duly authorized) this
\4 day of ~~V\ \ ,2003.
CITY OF NORTH RICHLAND HILLS, Texas
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Larry Cunningha . .' 8l'1qÆ!er C
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ATTACHMENT "A"
SCOPE OF SERVICES
PROJECT UNDERSTANDING
Prepare construction contract documents for the installation of a spread spectrum radio
communications system and develop coordinated signal timing for the City's existing traffic signal
system. Basic Engineering Services (outlined in the following Scope of Services) include and shall
be limited to the following:
1. Project Definition, Review Meetings, Management, and Control;
2. Signal System Communications Design;
3. Bidding;
4. Construction Contract Administration Services; and
5. Signal Timing Optimization.
I. PROJECT DEFINITION, REVIEW MEETINGS, MANAGEMEN~ AND CONTROL
A. Project Definition. For purposes of this Project the following OWNER intersections shall
be included.
1. OWNER maintained intersections (22) to be included in both the signal system
communications design and signal timing optimization phases of this project:
a. Grapevine Highway at Rufe Snow Drive;
b. Grapevine Highway at Vance Road;
c. Grapevine Highway at Glenview Drive;
d. Grapevine Highway at Road to the Mall;
e. Grapevine Highway at Rodger Line Drive;
f. Grapevine Highway at IH 820;
g. Grapevine Highway at Strummer;
h. Grapevine Highway at Harwood;
i. Grapevine Highway at Emerald Hills Way;
j. Grapevine Highway at TCC/NRH20;
k. Grapevine Highway at Walker Boulevard/Cannon;
I. Davis Boulevard at IH 820;
m. Davis Boulevard at Maplewood Avenue;
n. Davis Boulevard at Harwood Road/Lola Drive;
o. Davis Boulevard at Emerald Hills Way;
p. Davis Boulevard at College Circle;
q. Davis Boulevard at Bridge Street;
r. Davis Boulevard at Mid Cities Boulevard;
s. Davis Boulevard at Main Street;
t. Mid Cities Boulevard at Smithfield Road;
u. Mid Cities Boulevard at Holiday Lane; and
v. Mid Cities Boulevard at Tecnol Boulevard.
2. Additional OWNER maintained intersections (17) to be included in only the signal
system communications design phase of this project:
a. Davis Boulevard at Starnes Road/Rumfield Road;
b. Davis Boulevard at North Tarrant Parkway;
c. Davis Boulevard at SuperTarget Entrance;
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d. Davis Boulevard at Precinct Line Road;
e. Rufe Snow Drive at Meadow Lakes Drive;
f. Glenview Drive at Rufe Snow Drive;
g. Glenview Drive at Vance Road;
h. Holiday Lane at IH 820;
i. Holiday Lane at Lola Drive;
j. Holiday Lane at Dick Lewis Drive;
k. Holiday Lane at Trinidad Drive;
I. Holiday Lane at Industrial Park Boulevard;
m. Industrial Park Boulevard at Browning Drive;
n. Smithfield Road at Starnes Road;
o. Smithfield Road at Chapman Road;
p. Precinct Line Road at North Tarrant Parkway; and
q. Mid Cities Boulevard at Home Depot Entrance.
B. Review Meetinas. Unless otherwise stated herein, it is assumed that all project review
meetings will be held at the OWNER Public Works Service Center. It is agreed that up to
three (3) review meetings will be held relative to the project.
C. Manaaement and Control. Project management spans the entire duration of the project.
This task involves the monitoring and coordination of services provided to the OWNER.
Included in this task are documentation, reporting requirements, meetings, coordination,
and schedule.
1. Documentation. Surveying notes, reports, technical memoranda, status reports,
invoices, and other correspondence relevant to the project will be summarized and
copies turned over to the OWNER at the conclusion of the project or as requested by
the OWNER.
2. Meetinas. The ENGINEER will prepare agendas, materials, and meeting summaries
for up to three (3) meetings.
3. Proiect Coordination. The ENGINEER will coordinate data collection and design
efforts with OWNER staff and/or consultants working within or adjacent to the project
limits.
4. Project Schedule. The ENGINEER will prepare a project schedule.
II. SIGNAL SYSTEM COMMUNICATIONS DESIGN
A. Data Collection and Field Survey. The ENGINEER will collect and organize data for use
in future project tasks. The specific type, quantity and other requirements of the data to
be collected, reduced, and organized by the ENGINEER are described in the following
subtasks.
1. Field Survey. The ENGINEER will conduct a field survey for the system layout. The
compiled field data will provide detail to facilitate the construction of communications
equipment.
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2. Photoloa Summary. The ENGINEER will photograph each location where new
hardware is anticipated. The photolog will be provided to the OWNER at the
conclusion of the project.
3. Compilation of Desian Information. The ENGINEER will organize design information
required for completion of this project. The ENGINEER will compile available
specifications, standard detail drawings, and other design information from the
OWNER or TxDOT and other sources and will prepare a list of other needed data.
B. Communications Master Plan.
1. Wireless Evaluation. Prior to design, the ENGINEER will conduct field verifications of
antenna locations, as identified in the data collection task. Connection locations to
the OWNER's existing service center will also be identified.
A topographic map study will be conducted to determine if a planned path provides
favorable line-of-sight conditions and path performance.
2. Network Master Plan. Based on the location of the OWNER's signalized
intersections, the ENGINEER will design a wireless data communications network
master plan. This design will indicate communication routings, communications
nodes (if any), and network hardware requirements. The proposed communications
media will be spread-spectrum radio.
C. Plans Preparation. The ENGINEER will prepare construction plans for the OWNER's
traffic signal communications system. Radio antenna locations will be described in the
general notes and equipment summary tables in accordance with the latest applicable
standards and procedures of the OWNER. Intersection antenna mounting details and
connections between the antenna and traffic control cabinet will be highlighted in the
standard detail drawings and plans. Communications interconnect between the omni-
directional antenna and the existing service center will be shown in layout form.
The ENGINEER will prepare and submit construction plans to the OWNER for review
and comments at the following stages of development:
1. Preliminarv plans review. Preliminary plans showing title sheet, system conceptual
design, and preliminary communications detail drawings.
2. Pre-final plans review. Pre-final plans showing title sheet, general notes, equipment
summary tables, special/standard detail drawings, as well as a design layout
including street names, legend, scale, north arrow, equipment locations, network
schematics, and communications sizing and routing.
3. Final plans review. Final plans will incorporate appropriate review comments from
prior plan reviews.
A total of two (2) plans packages will be submitted at each review stage. The
ENGINEER will establish target dates on which the plans will be submitted for review
at the above stages of development. The ENGINEER will submit the revised plans
prior to the next review meeting.
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Major revisions requested after the final review stage will be considered Additional
Services. Completion and compensation of Additional Services will be agreed to and
authorized by the OWNER prior to their performance.
D. Preparation of Specifications. This task involves the preparation of specifications, special
specifications, and special provisions that will be included in the construction contract bid
documents. The ENGINEER will prepare specifications for the procurement and
installation of system elements for which design requirements are to be established and
are not already developed by the OWNER. The final specifications will include:
1. Central control hardware and software functional requirements; and
2. Communications equipment, including intersection interface equipment.
The ENGINEER will prepare and submit to the OWNER three (3) copies of the
specifications at each stage of development:
1. Preliminary outline with description of section content. Submit with preliminary plans
review.
2. Pre-final specifications. Submit with pre-final plans review.
3. Final specifications. Submit with final plans review.
E. Preparation of Enaineer's Opinion of Probable Construction Cost. The ENGINEER will
prepare preliminary and final ENGINEER's opinion of probable construction costs for the
traffic signal system upgrade and communications construction package as specified in
the plans and specifications. These cost projections will include the total items contained
in the bid documents and individual unit costs for each pay item. The final cost projection
will be submitted electronically to the OWNER.
F. Preparation of Bid Documents. The ENGINEER will prepare preliminary and final bid
documents for the traffic signal system and communications construction package. One
(1) bound set of the preliminary bid documents will be submitted to the OWNER for
review and comments. One (1) reproducible set of the final bid documents will be
submitted to the OWNER.
III. BIDDING
Bidding shall include:
A. Assist the OWNER in the placement of the advertisement for bids (advertisement to be
paid for directly by the OWNER), issue contract documents to prospective bidders and
maintain a list of bidders to whom bidding documents have been issued.
B. Issue addenda as appropriate to interpret, clarify, or expand the bidding documents.
C. Attend the bid opening, prepare a tabulation of the bids as received, and prepare a
recommendation of award of the construction contract to the lowest qualified bidder.
D. Assist the OWNER in determining the qualifications and acceptability of the low bidder.
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E. Prepare the contract documents for execution by the contractor, receive, review and
forward such documents to the OWNER for review and execution.
IV. CONSTRUCTION CONTRACT ADMINISTRATION SERVICES
The ENGINEER will provide professional construction contract administration services for
assisting the OWNER during construction. These services will include the following:
A. Visits to Site and Observation of Construction. Provide on-site construction observation
services during the construction phase of the subject project. Observations will vary
depending on the type of work being performed by the contractors, the location, and the
contractors' schedules. .
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Make visits to the Site at1ntervals as ði:reEMed by the ~ in order to observe the
progress of the Work. Such visits and observations by the ENGINEER are not intended
to be exhaustive or to extend to every aspect of CONTRACTOR's work in progress.
Observations are to be limited to spot checking, selective measurement, and similar
methods of general observation of the Work based on the ENGINEER's exercise of
professional judgment. Based on information obtained during such visits and such
observations, the ENGINEER will determine if CONTRACTOR's work is generally
proceeding in accordance with the construction contract documents, and the ENGINEER
shall keep the OWNER informed of the general progress of the Work.
The purpose of the ENGINEER's visits to the site will be to enable the ENGINEER to
better carry out the duties and responsibilities assigned in this Agreement to the
ENGINEER during the construction phase by the OWNER, and, in addition, by the
exercise of the ENGINEER's efforts, to provide the OWNER a greater degree of
confidence that the completed Work will conform in general to the construction contract
documents and that the integrity of the design concept of the completed Project as a
functioning whole as indicated in the construction contract documents has been
implemented and preserved by CONTRACTOR. The ENGINEER shall not, during such
visits or as a result of such observations of CONTRACTOR's work in progress,
supervise, direct, or have control over CONTRACTOR's work, nor shall the ENGINEER
have authority over or responsibility for the means, methods, techniques, equipment
choice and usage, sequences, schedules, or procedures of construction selected by
CONTRACTOR, for safety precautions and programs incident to CONTRACTOR's work,
or for any failure of CONTRACTOR to comply with laws and regulations applicable to
CONTRACTOR's furnishing and performing the Work. Accordingly, the ENGINEER
neither guarantees the performance of any CONTRACTOR nor assumes responsibility
for any CONTRACTOR's failure to furnish and perform its work in accordance with the
construction contract documents.
B. Recommendations with Respect to Defective Work. Recommend to the OWNER that
CONTRACTOR's work be disapproved and rejected while it is in progress if, on the basis
of such observations, the ENGINEER believes that such work will not produce a
completed Project that conforms generally to construction contract documents or that it
will prejudice the integrity of the design concept of the completed Project as a functioning
whole as indicated in the construction contract documents.
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C. Clarifications and Interpretations. Issue necessary clarifications and interpretations of the
construction contract documents to the OWNER as appropriate to the orderly completion
of CONTRACTOR's work. Such clarifications and interpretations will be consistent with
the intent of and reasonably inferable from the construction contract documents. Field
Orders authorizing variations from the requirements of the construction contract
documents will be made by the OWNER.
D. Chance Orders. Recommend Change Orders to the OWNER, as appropriate. Review
and make recommendations related to Change Orders submitted or proposed by the
CONTRACTOR.
E. Substitutes and "or-equal". Evaluate and determine the acceptability of substitute or "or-
equal" materials and equipment proposed by CONTRACTOR, but subject to the
provisions of applicable standards of state or local government entities.
F. Disaareements between the OWNER and CONTRACTOR. As necessary, render written
decision on all claims of the OWNER and CONTRACTOR relating to the acceptability of
CONTRACTOR's work or the interpretation of the requirements of the construction
contract documents pertaining to the execution and progress of CONTRACTOR's work.
In rendering such decisions, the ENGINEER shall be fair and not show partiality to the
OWNER or CONTRACTOR and shall not be liable in connection with any decision
rendered in good faith in such capacity.
G. Final Notice of Acceptabilitv of the Work. Conduct a final site visit to determine if the
completed Work of CONTRACTOR is generally in accordance with the construction
contract documents so that the ENGINEER may recommend, in writing, final payment to
CONTRACTOR. Accompanying the recommendation for final payment, the ENGINEER
shall also provide a notice that the Work is generally in accordance with the construction
contract documents to the best of the ENGINEER's knowledge, information, and belief
and based on the extent of the services provided by the ENGINEER under this
Agreement.
H. Limitation of Responsibilities. The ENGINEER shall not be responsible for the acts or
omissions of any CONTRACTOR, or of any of their subcontractors, suppliers, or of any
other individual or entity performing or furnishing the Work. The ENGINEER shall not
have the authority or responsibility to stop the work of any CONTRACTOR.
I. Pre-construction conference. The ENGINEER will prepare for and attend the pre-
construction conference.
V. SIGNAL TIMING OPTIMIZATION
A. Data Collection. The ENGINEER will collect the following data:
1. Turnina Movement Counts. New turning movement count data will be collected and
reduced for three (3) one and one-half (1.5)-hour time periods at each project
intersection. Data will be tabulated by 15-minute increments, by approach direction
(e.g., northbound, etc.), and by turning movement (e.g., left, straight, or right). In
addition, the number of vehicles with more than four tires will be classified by 15-
minute increments and by approach.
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The time periods shall be defined as follows:
· AM Peak = six (6) consecutive 15-minute periods (normally 7:00 AM to 8:30 AM) on
a non-holiday Tuesday, Wednesday, or Thursday;
· Noon Peak = six (6) consecutive 15-minute periods (normally 11 :45 AM to 1 : 15 PM)
on a non-holiday Monday, Tuesday, Wednesday, or Thursday;
· PM Peak = six (6) consecutive 15-minute periods (normally 4:45 PM to 6:15 PM) on
a non-holiday Tuesday, Wednesday, or Thursday; and
It is understood that the beginning and ending times of the AM Peak, Noon Peak, and
PM Peak counts may be adjusted based on the results of recording machine count data.
2. Adiust Count Data. Using information from the traffic counts, the ENGINEER will
make adjustments as necessary to ensure the reasonableness of the turning
movement counts for each intersection. If any adjustments are deemed necessary
the changes will be made upon conference with the OWNER.
3. Recordina Machine Counts. For each of the following locations, new Tuesday
through Thursday directional recording machine count data will be collected and
reduced. For each location and direction, a minimum of seventy-two (72) hours of
data will be recorded by 15-minute increments, beginning on or before 11 :00 PM on a
Tuesday and ending on or after 1 :00 AM on Thursday. Counts will not be made on
holidays, during adverse weather conditions, or when school is not in session. One
(1) additional count will be made on a Saturday at a location to be determined by the
ENGINEER.
Recording machine counts will be made at the following locations:
On Grapevine Highway -
· Between Glenview and Road to the Mall
· Between Emerald Hills Way and TCC/NRH20
On Davis Boulevard -
· Between Maplewood Avenue and Harwood Road/Lola Drive
· Between Mid Cities Boulevard and Main Street
4. Travel Time Runs. Both "before" and "after" travel time runs will be made using
floating car techniques for each of the following routes during the time periods shown
in Section V.A.1 above.
· Grapevine Highway from Rufe Snow Drive to Precinct Line Road (five runs per time
period minimum per direction)
· Davis Boulevard from IH 820 to Main Street
The before runs will be made prior to the development of the new signal timing to
establish baseline conditions (speeds, delay, and number of stops) and to determine
appropriate progression speeds, areas where queue management is critical, and areas
where recurrent congestion may affect progressive traffic movement.
After the fine-tuning and adjustment of the new, optimized signal timing, the after
runs will be made to document the changes.
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5. Conduct Field Observation. Prior to the development of new signal timing, the
ENGINEER shall conduct field observation on each route during each time period.
6. Verify Geometrics. For each project intersection, the ENGINEER will verify the
followirig elements of intersection geometrics and pedestrian accommodation that
affect signal timing:
· The number of lanes on each approach and the required or permitted usage of
each lane (Le., "left only"; "left or straighf; "straight only"; "straight or righf'; "right
only"; or "left, straight, or righf);
· Approximate street widths, crosswalk lengths, and grades; and
· Existence of pedestrian signal indications (Le., 'Walk" and "Don't Walk") and/or
pedestrian actuation.
B. Generate Timina Plans.
1. Assemble Controller Interval Timing. Based on approach speeds and intersection
geometrics, the ENGINEER will assemble the appropriate controller interval timing.
Minimum green, passage, yellow, all-red, MAX I, MAX II, etc. will be provided by the
OWNER to the ENGINEER. 'Walk" and pedestrian clearances will be calculated by
the ENGINEER. Existing yellow and all-red clearance intervals will be utilized.
2. Generate Timina Plans. Using Synchro™ 5.0, the ENGINEER will generate new
signal timing plans. It is anticipated that up to three (3) unique plans will be generated
for all subsystems of the Project. This generally will consist of unique plans for the
AM Peak, Noon Peak, and PM Peak time periods.
Progression bandwidths for all timing plans will be optimized to the maximum
practical extent using dual leading left-turns. After this optimization is complete, the
arterial will be re-optimized allowing the variation of the signal phase sequence (i.e., a
particular left-turn phase may be "leading" during one timing plan but lagging during
one or more other timing plans). The ENGINEER will identify locations where a
"yellow trap" condition would result because of a leading "protected-permitted" left-
turn phase on the opposite approach. This information will be provided to the
OWNER and reviewed with them to determine the most appropriate method for
eliminating the yellow trap condition. The final timing will make use of lagging left-
turns only at those locations where the "yellow trap" will not occur.
Each Synchro timing plan will include a cycle length, offset, and split for each
intersection and a time space diagram for each corridor peak period. The plans will
be submitted for review. At a subsequent review meeting, the ENGINEER will discuss
the characteristics of each plan and receive comments. The ENGINEER will then
finalize each timing plan to incorporate such comments.
This project will follow current TxDOT requirements for traffic signal timing along
State roadways.
3. Finalize Timina Plans. The ENGINEER will furnish the final timing plan data showing
the cycle length, offset, splits, and modifications to the existing clearance intervals.
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The following is assumed relative to actual implementation of the timing:
· The timing data will be entered by OWNER personnel;
· It is assumed that the ENGINEER's role relative to timing plan implementation will
be limited to responding to questions that may arise during the implementation
process.
4. Timina Plan Fine-Tuning. When the new timing is operational, the ENGINEER will
provide qualified staff members for on-site fine-tuning assistance. During the course
of this assistance, the ENGINEER will observe the actual operation of the new timing
plans and suggest minor adjustments to improve the operation.
It is assumed that OWNER personnel will participate in this process, thereby gaining
familiarity with the timing plans.
The ENGINEER will provide up to four (4) hours per intersection for on-site fine-
tuning. A total of 23 intersections are assumed for this project. It is mutually
understood and agreed to that no more than ninety-two (92) man-hours will be
expended under this contract for fine tuning purposes.
The OWNER will send the ENGINEER a copy of the implemented timing plans for
review and comparison against the recommended' timing plans.
5. Final Report. At the conclusion of the project, the ENGINEER will prepare a final
report that will include the following:
· The updated information originally provided in the technical memoranda; and
· A summary of project benefits as determined from an analysis of the "before" and
"after" travel time runs data.
The following additional information, provided in the appendix:
· Final Synchro signal timing data along with time-space diagrams; and
· "After" travel time runs.
The ENGINEER will submit a draft final report for review. The ENGINEER will meet
with the OWNER to receive comments. The ENGINEER will incorporate review
comments and submit the final report.
ADDITIONAL SERVICES
Services not specifically identified in the Scope of Services above shall be considered additional
and shall be performed on an individual basis upon authorization by the OWNER.
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~ City Secretary Office
~ Official Record Copy
ATTACHMENT "B"
COMPLETION SCHEDULE
TASK
DATE OF COMPLETION
1.
City Council Awards Engineering Services Contract
April 14, 2003
April 21, 2003
May 7-11, 2003
2.
Begin Data Collection / Field Surveys
3.
Conduct Traffic Counts / Before Travel Time Runs
4.
Submit Preliminary Construction Contract Documents
June 2, 2003
5.
Submit Signal Timing Optimization Technical Memorandum
June 14, 2003
6.
Submit Pre-Final Construction Contract Documents
June 30, 2003
7.
Submit Final Construction Contract Documents
July 14, 2003
8. Advertise for Bids July 20,2003
(or when Directed by OWNER after Completion of Construction Contract Documents)
9. Submit Draft Signal Timing Plans August 4, 2003
10. Submit Final Signal Timing Plans August25,2003
11. Signal Timing Implementation and Fine Tuning September 8, 2003
12. Conduct After Travel Time Runs September 23, 2003
13. Submit Signal Timing Optimization Final Report October 6, 2003
The proposed schedule is draft only and may change at any time during the duration of the project. Delays to the schedule
beyond the control of the ENGINEER will not be the responsibility of the ENGINEER.
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~ City Secretary Office
~ Official Record Copy