2018.12.03 FP Clark Memo
To: Paul S. Rosenberg, Mayor and the Village of Rye Brook Board of
Trustees
Date: December 3, 2018
Subject: 900 King Street, Petition to Amend the PUD Regulations and an
Application for a PUD Concept Plan – Additional Baseline Traffic
Volume Data
As referenced in the memorandum prepared by our office and dated November 2,
2018 to verify the turning movement counts used by the Applicant in its Traffic Study,
and supplement turning movement counts conducted by our office, an Automatic
Traffic Recorder (ATR) was installed on King Street, between the Arbor Drive and
Rye Brook Village Hall driveway for a period beginning Saturday, October 27, 2018
through Sunday, November 4, 2018. This ATR recorded traffic volumes, by direction
and hourly for each of the days noted above. However, for reference purposes the
Thursday, November 1, 2018 data was summarized in detail and graphically
illustrated in Figure A-1 to indicate hourly volumes and to further identify peak hour
characteristics of traffic levels on King Street.
The data indicates that King Street has a daily two-way volume of 19,988 vehicles,
with 11,467 vehicles traveling northbound and 8,521 traveling southbound during a
24-hour period. The data further identifies that the weekday morning peak hour
occurs between 8:00 and 9:00 A.M. and the weekday afternoon peak hour occurs
between 5:00 and 6:00 P.M. During the morning peak hour the two-way volume was
found to be 1,757 vehicles. During the weekday afternoon peak hour the two-way
volume was found to be 1,728 vehicles.
Table A-1 provides a summary of the identified peak hour volumes on King Street
from the ATR and compares it to the Applicant’s peak hour data for reference
purposes. Backup data is provided. The traffic volumes shown in the table are based
on the actual peak hours and volume, therefore, referenced the following peak hours:
Weekday morning – 7:30 to 8:30 A.M.;
Weekday midday – 2:30 to 3:30 P.M.; and,
Weekday afternoon – 5:00 to 6:00 P.M.
This table indicates that during the exact same hours as used by the Applicant to complete the Traffic
Study the percent difference in traffic volumes during the weekday morning peak hour was found to
be 1.6 percent higher in November versus March, 3.98 percent higher during the weekday midday
peak hour (School departure) than the January counts and 0.87 percent during the weekday
afternoon peak hour.
In comparison of the data obtained by the Applicant and traffic counts obtained by our office a
comparison of the peak hour conditions and volumes indicate that the volumes obtained by the
Applicant and our office are within an acceptable range. It is important to note that traffic volumes
fluctuate on a daily basis and the difference in these volumes are within an acceptable range used
by Traffic Professionals to reflect conditions on area roadways. Therefore, it is our opinion that the
baseline traffic volumes used by the Applicant for purposes of completing their Traffic Study are
appropriate and represent typical traffic conditions on King Street and at each of the intersections
included in the analyses.
Michael A. Galante
Managing Principal
Attachment
cc: Christopher Bradbury, Village Administrator
Michael Nowak, Superintendent of Public Works/Village Engineer
Jennifer L. Gray, Esq., Village Attorney
Peter Feroe, AICP, for the Applicant
Mark Miller, Esq., for the Applicant
James Ryan, RLA, for the Applicant
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2
Table A-1
TWO-WAY TRAFFIC VOLUME COMPARISON – PEAK HOURS
900 King Street
Rye Brook, New York
KING STREET (NYS ROUTE 120 A),
BETWEEN ARBOR DRIVE AND RYE BROOK VILLAGE HALL DRIVEWAY
Weekday Morning Peak Hour
(7:30 – 8:30 A.M.)
Weekday Midday Peak Hour
(2:30 – 3:30 P.M.)
Weekday Afternoon Peak Hour
(5:00 – 6:00 P.M.)
March
2017
November
2018
%
Difference
January
2018
November
2018
%
Difference
March
2017
November
2018
%
Difference
1,798 1,817 1.06 1,483 1,542 3.98 1,713 1,728 0.87
Source:
1) Traffic volumes from March 2017 and January 2018 are from the DEIS Traffic Study prepared by
Maser Consulting.
2) Traffic volumes from November 1, 2018 are from an Automatic Traffic Recorder (ATR) conducted
by Frederick P. Clark Associates, Inc., see Figure A-1.
Frederick P. Clark Associates, Inc.
g:\538.693 900 king st redevelopment rye brook\word\table a-1.docx
11/6/18
Frederick P. Clark Associates, Inc.
November 2018
Source: Automatic Traffic Recorders conducted by Frederick P. Clark Associates, Inc. from Saturday, October 27, 2018 to Sunday, November 4, 2018.
Figure A-1
12:00
AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:00
AM
11:00
AM
12:00
PM
1:00
PM
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:00
PM
11:00
PM
Northbound 61 9 14 13 43 141 524 967 998 583 533 550 631 665 890 950 840 939 760 520 356 249 138 93
Southbound 33 18 15 12 21 67 255 728 759 488 352 373 453 418 571 662 744 789 605 395 304 212 158 89
Two-Way 94 27 29 25 64 208 779 1,695 1,757 1,071 885 923 1,084 1,083 1,461 1,612 1,584 1,728 1,365 915 660 461 296 182
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
TWO-WAY HOURLY TRAFFIC VOLUMES -THURSDAY, NOVEMBER 1, 2018
KING STREET (NYS ROUTE 120A) SOUTH OF RYE BROOK VILLAGE HALL DRIVEWAY
900 King Street
Rye Brook, New York
24-Hour Total
Northbound -11,467
Southbound -8,521
Two-Way -19,988
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