CM-13-03-051ROUND ROCK, TEXAS
PURPOSE. PASSION PROSPERITY
Item Caption:
Q,v- (3 -o3 -cg/ RECEIVED
MAR 0 7.2013 fit' •
MiAR ?"7
City Manager Approval Form
Consider executing Supplemental Contract No. 2 with Kimley-Horn and Associates, Inc. for the Signal
Coordination on Three Corridors Project.
Approval Date: March 8, 2013
Department Name: Transportation Department
Project Manager:
Gary Hudder, Transportation Director
Assigned Attorney:
Steve Sheets
Item Summary:
This Supplemental Agreement will increase the scope of work under the existing Corridor Coordination - Signal Timing (project
number tx05trfsig) contract that Kimley-Horn and Associates, Inc. currently has with the the City. The increase in scope includes
interim signal coordination along Gattis School Road. This will be done in two phases. The first phase will be on Gattis School Road
between Red Bud Lane and A.W. Grimes Blvd. The second phase will be done on Gattis School Road between A.W. Grimes Blvd. and
S. Mays St. Phase two will be implemented once construction is completed rebuilding the traffic signal at Gattis School Road and
Greenlawn Blvd. The contract for the signal improvements at Gattis School Road and Greenlawn Blvd will be presented to City
Council at the March 28th, 2013 meeting. This signal coordination project will help improve mobility along Gattis School Road.
No. of Originals Submitted:
Project Name:
Cost:
Source of Funds:
Two
Supplemental Agreement #2 - Gattis School Rd @ Greenlawn Blvd signal improvements
$15,630.37
RR Trans Dev Corp Construction
Source of Funds (if applicable): Select Source Fund
Account Number:
Finance Director Approval: LO for C. Delaney
Department Director Approval: Gary Rudder
'Electronic signature by the Director is ac
CIP 111 a Budget ri n
N/A OK N/A OK
Date: 03-05-2013
Date: 3/4/13
ceptable. Please only submit ONE approval form per item. '
Purchasing 111
N/A
OK
Accounting 111
N/A OK
ITEMS WILL NOT BE PLACED ON THE COUNCIL OR CM AGENDA W/OUT PRIOR FINANCE AND/OR LEGAL APPROVAL
REV. 6/20/11
STATE OF TEXAS
COUNTY OF WILLIAMSON
SUPPLEMENTAL CONTRACT NO. 2
TO CONTRACT FOR ENGINEERING SERVICES
FIRM: KIMLEY-HORN AND ASSOCIATES, INC. ("Engineer")
ADDRESS: 10415 Morado Circle, Bldg I, Suite 300, Austin, TX 78759
PROJECT: Signal Coordination on Three Corridors
This Supplemental Contract No. 2 to Contract for Engineering Services is made by and between
the City of Round Rock, Texas, hereinafter called the "City" and Kimley-Horn and Associates,
Inc., hereinafter called the "Engineer".
WHEREAS, the City and Engineer executed a Contract for Engineering Services, hereinafter
called the "Contract", on the 22nd day of September, 2011 for the Signal Coordination on Three
Corridors Project in the amount of $106,303.84; and
WHEREAS, the City and Engineer executed Supplemental Contract No. 1 on July 3, 2012 to
amend the scope of services and to increase the compensation by $26,055.18 to a total of
$132,359.02; and
WHEREAS, it has become necessary to amend the Contract to modify the provisions for the
scope of services and to increase the compensation by $15,630.37 to a total of $147,989.39;
NOW THEREFORE, premises considered, the City and the Engineer agree that said Contract
is amended as follows:
Article 2, Engineering Services and Exhibit B, Engineering Services shall be amended as set
forth in the attached Addendum To Exhibit B. Exhibit C, Work Schedule shall be amended as
set forth in the attached Addendum To Exhibit C.
II.
Article 4, Compensation and Exhibit D, Fee Schedule shall be amended by increasing by
$15,630.37 the lump sum amount payable under the Contract for a total of $147,989.39, as
shown by the attached Addendum to Exhibit D.
IN WITNESS WHEREOF, the City and the Engineer have executed this Supplemental
Contract in duplicate.
Supplemental Contract
0199.7185; 00268923
Rev.12/01 /08
84275
KIMLEY-HORN AND ASSOCIATES, INC.
By: " VA.,,
S'C 1/14.e
Date
CITY OF RO D ROCK
By: -%%jam/
S44U.N Ywood.
C1' x.4.0-9 t4e2-08/5
-
Date
Supplemental Contract
0199.7185; 00268923
2
APPA VED
Stepha
S T 1 FORM:
L. Sheets, City Attorney
Rev. 12/01/08
84275
ADDENDUM TO EXHIBIT B
Engineering Services
SCOPE OF WORK OVERVIEW
Kimley-Horn and Associates, Inc. ("KHA") will develop and implement coordinated signal tinting
plans during the interim period for the AM Peak, PM Peak, and Off -Peak periods for 12 signals along
Gattis School Road. The interim signal timing plans will not allow lead -lag optimization for left -turn
movements at the intersections. The timing plans will be re -adjusted, as part of the scope of the
original contract, after all the signals along the corridor are upgraded with four -section heads using a
flashing yellow arrow for left -turn movements.
TASK 11.0 DEVELOP INTERIM SYNCHRONIZED SIGNAL TIMING PLANS
KHA will perform the following tasks to develop interim synchronized signal timing plans for
University Blvd. at the following intersections:
1. S Mays St.
2. Surrey Dr.
3. Greenlawn Blvd
4. Windy Park Dr.
5. S A W Grimes Blvd.
6. S Creek Dr.
7. Double Creek Dr.
8. Round Rock Ranch Blvd.
9. Round Rock Ranch Blvd/Meister Lane
10. Via Sonoma Trail
11. High Country Blvd.
12. Red Bud Lane
Subtask 11A. Cycle Length Analysis
After setting up the base models, different cycle lengths will be analyzed using Synchro 7 to
identify the optimum system cycle lengths for the corridor.
Subtask 11B. Optimized Models
Optimized splits, offsets and phase sequences will be developed for the corridor to maximize
green bands for the AM, PM, Off Peak, and Weekend Peak period. The off peak period will
be modeled by factoring down the afternoon model using data from the 24 hour counts along
the corridor. The green band splits will be based on peak period traffic demand, with larger
green bands favoring predominant traffic flows.
1
The new timing plans will be discussed with City staff for their review and approval.
Modifications will be made to the timing plans based on the City's comments and a set of
timing plans and time -space diagrams will be presented to the City.
TASK 12.0 INTERIM SIGNAL TIMING IMPLEMENTATION AND FINE TUNING
KHA will assist in the implementation of the interim signal timing plans as follows:
Subtask 12A. Lab Test
Each individual timing plan will be downloaded to a test controller at the City's traffic shop for
testing prior to implementation to prevent any glitches upon implementation in the field.
Subtask 12B. Input New Timings
KHA will input the proposed signal timing plans at each signal using new `pattern' numbers
preventing the need to overwrite existing coordination pattern. The initial implementation of
the timing plans will be done remotely via the City's ACTRA/TACTICS system to increase
efficiency of programming the controllers.
Subtask 12C. Fine Tuning
After the proposed signal timing plans have been implemented, KHA will drive through the
corridor during each peak period (AM, Off -Peak, PM, and Weekend peak) to identify any
modifications that need to be made to the splits and or the offsets. Attention will be paid to
vehicular delays and queuing on minor streets. Upon completion of the fine tuning, KHA will
update the City's ACTRA/TACTICS database and deliver final timing plan sheets to the City.
2
ADDENDUM TO EXHIBIT C
Work Schedule
Milestones
Tasks
Duration
(Days)
Completion Date
P
Notice to Proceed
March 8, 2013
1
Develop Optimized Tunings
7
March 15, 2013
2
Field Implementation & Fine Tuning
(A. W. Grimes to Red Bud Lane)
6
March 21, 2013
3
Field Implementation & Fine Tuning
(Mays St to A. W. Grimes)
4
September 3-6, 2013
ADDENDUM TO EXHIBIT D: FEE SCHEDULE BY TASKS
* - For Gattis School Road Interim Signal Timing Tasks - See Man -Hours Estimate
Budgets
Task
Increases to
Existing
Tasks
New Task
I. PROJECT ADMINISTRATION
-
-
II. DATA COLLECTION
-
-
III. DEVELOP SYNCHRONIZED SIGNAL TIMING PLANS
-
-
IV. SIGNAL TIMING IMPLEMENTATION AND FINE TUNING
-
-
V. FINAL REPORT AND MODEL SUBMITTALS
-
-
VI. SYNCHRO MODELING TRAINING
-
-
VII. BASE MAPS, AND SPECIFICATIONS ASSEMBLY
-
-
VIII. PLANS, SPECIFICATIONS, & ESTIMATE (PS&E)
-
-
IX. BID DOCUMENTS & BIDDING ASSISTANCE
-
-
X. CONSTRUCTION PHASE SERVICES
-
-
XI. DEVELOP INTERIM SYNCHRONIZED SIGNAL TIMING PLANS*
$7,027.79
XII. INTERIM SIGNAL TIMING
IMPLEMENTATION & FINE TUNING*
$6,152.58
TASKS SUBTOTAL
$0.00
$13,180.37
KHA EXPENSES
$600.00
KHA TOTAL
$13,780.37
SUB -CONSULTANTS
ITERIS
$1,850.00
SUPPLEMENTAL TOTAL
$15,630.37
* - For Gattis School Road Interim Signal Timing Tasks - See Man -Hours Estimate
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