O-2021-287 - 11/4/2021 1 ORDINANCE NO. 0-2021-287
AN ORDINANCE AMENDING THE CODE OF ORDINANCES (2018
4 EDITION), CITY OF ROUND ROCK, TEXAS, CHAPTER 42, SECTION
5 42-127 AMENDING THE SPEED ZONE ON A PORTION OF CREEK
6 BEND BOULEVARD; AND PROVIDING FOR A SAVINGS CLAUSE
7 AND REPEALING CONFLICTING ORDINANCES OR RESOLUTIONS.
8
9 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF ROUND ROCK,
10 TEXAS:
11 WHEREAS, Section 545.352 of the Texas Transportation Code establishes
12 prima facie reasonable and prudent speed limits for streets and highways situated in the
1) state of Texas, and
14 WHEREAS, Section 545.356 of the Texas Transportation Code authorizes the
15 governing body of a municipality to alter, by ordinance, prima facie speed limits
16 pursuant to an engineering and traffic investigation, and
17 WHEREAS, an engineering and traffic investigation was conducted on a portion
18 of Creek Bend Boulevard (both directions) beginning at Wyoming Springs Drive to the
19 southern approach to Brushy Creek Bridge, and
20 WHEREAS, a copy of said engineering and traffic study is attached hereto and
21 incorporated herein for all purposes as Exhibit "A", and
22 WHEREAS, the results of said engineering and traffic investigation indicate that
23 the speed zone on Creek Bend Boulevard (both directions) beginning at Wyoming
24 Springs Drive to the southern approach to Brushy Creek Bridge, should be amended,
25 Now Therefore
26 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF ROUND ROCK,
27 TEXAS:
28
0112.20212;00484043
29 I.
30 That Chapter 42, Section 42-127(7), of the Code of Ordinances (2018 Edition),
31 City of Round Rock, Texas, is hereby amended by adding the following:
32 Sec.42-127. Specified speed limits.
33
34 (7) The maximum prima facie speed limit shall be 45 miles per hour along the following street:
35
36
37 ON FROM TO
38
39 Creek Bend Boulevard Wyoming Springs Dive Southern Approach to
40 (both directions) Brushy Creek Bridge
41
42
43 II.
44 A. All ordinances, parts of ordinances, or resolutions in conflict herewith are
45 expressly repealed.
46 B. The invalidity of any section or provision of this ordinance shall not
47 invalidate other sections or provisions thereof.
48 C. The City Council hereby finds and declares that written notice of the date,
49 hour, place and subject of the meeting at which this Ordinance was adopted was posted
50 and that such meeting was open to the public as required by law at all times during
51 which this Ordinance and the subject matter hereof were discussed, considered and
52 formally acted upon, all as required by the Open Meetings Act, Chapter 551, Texas
53 Government Code, as amended.
54 READ and APPROVED on first reading this the 2 day of
55 do[ w_ , 2021.
56 READ, APPROVED and ADOPTED on second reading this the � day of
57 2021.
2
58
59 /m
60 CRAG Mayor
61 City ofnrok, Texas
62
63 ATTEST:
64
65 ,
66 , Citj Clerk
N\e-alLv\�kc,
3
EXHIBIT
„A„
Mayor Councibnembm City Manager
Craig Morgan Michelle Ly Laurie Hadley
Matthew Baker
Frank Ortega
UROUNaDROCK TEXAS Mayor Pro-Tern Kristin Stevens a Attorney
Rene Flores FkLda Montgomery Stephan L Sheets
To: Brian Kuhn, PE, Assistant Director of Transportation
From: Matt Bushak, PE, Senior Transportation Engineer
Date: September 24, 2021
RE: SPEED STUDY FOR CREEK BEND BLVD—WYOMING SPRINGS DR TO BRUSHY CREEK BRIDGE
The City of Round Rock Transportation Department has completed a speed study along Creek Bend Blvd
between Wyoming Springs Blvd and the southwest approach to the bridge over Brushy Creek. The
purpose of the study was to document and evaluate the existing posted speed limits within the study
area. Curve advisory speeds and school zone speed evaluation was not in the scope of the study. The
following summarizes the study methodology, results, and recommendations.
EXISTING CONDITIONS
Creek Bend Blvd is classified as an arterial and consists of two lanes in each direction with a raised
center median. The posted speed limit within the study area is 45 mph. The study area and existing
speed limit signs are shown in Figure 1.
DATA COLLECTION
TXDOT's "Procedures for Establishing Speed Zones" (Manual) provides guidance on collecting data for
speed studies. The Manual recommends that speed checks should:
• Be made on average weekdays at off-peak hours
• Be made under favorable weather conditions
• Include only free flowing vehicles
• Include a minimum of 125 cars in each direction at each location
• Be discontinued after two hours if radar is used, even if 125 cars have not been recorded
Speed spot data were collected by Quality Counts using radar technology at three locations within the
study area. The data were taken in both the northeast bound and southwest bound directions. The
locations are shown on Figure 1 and the Field Tally Sheets are in Appendix A. Speed distributions were
graphed to confirm that there were no anomalies in the data and are included in Appendix A. Table 1
provides a summary of the data collected.
CITY OF ROUND ROCK TRANSPORTATION DEPARTMENT.3400 Sunrise Road, Round Rock, Texas 78665
(P) 512.218.7044.(F) 512.218.5563.roundrocktexas.gov
SPEED STUDY FOR CREEK BEND BLVD-WYOMING SPRINGS DR TO BRUSHY CREEK BRIDGE
Page 2 of 2
Direction of Travel
Location NE SW
Creek Bend Blvd and Soprano Way 49 mph 46 mph
Creek Bend Blvd just southwest of 49 mph 47 mph
Brushy Creek Bridge
Creek Bend Blvd just northeast of 47 mph 44 mph
Brushy Creek Bridge
Table 1: 85th percentile speeds recorded
SPEED STUDY METHODOLOGY
TXDOT's Manual provides guidance on the methodology for setting speed zones. The Manual suggests
using the 85th percentile speed of free flowing traffic as a basis for determining the appropriate speed
limit. The 85th percentile speed is used by many cities, counties, and states and is based on the theory
that a large majority of drivers:
• Are reasonable and prudent
• Do not want to have a crash
• Desire to reach their destination in the shortest possible time
Therefore, a speed at or below the recorded 85th percentile speed may be considered the maximum safe
speed under favorable weather and visibility conditions. The posted speed selected is the nearest value
ending in 5 or 0.The final speed limit may be lowered or raised by as much as 5 miles per hour from the
85th percentile determined by the study, based on the professional judgment of the supervising
engineer.
RESULTS AND RECOMMENDATIONS
Based on the results of the study,the 85th percentile speeds within the study area are between 44 mph
and 49 mph, which is within 5 mph of the posted speed. Therefore,the recommendation of the
Transportation Department is for the existing speed limit remain at 45 mph. Furthermore,the current
speed limit sign placement is appropriate, and it is recommended that the signs remain at their current
locations. No additional speed limit signs are necessary.
*:........................... t /
0 MATINEW BUSHAK
..............................Y"o
Af
91480 40
C€NSA° ��
`�cN r
CITY OF ROUND ROCK TRANSPORTATION DEPARTMENT. 3400 Sunrise Road, Round Rock,Texas 78665
(P)512.218.7044.(F) 512.218.5563.roundrocktexas_gov
APPENDIX A
CREEK BEND BLVD SPEED STUDY
WYOMING SPRINGS DR TO BRUSHY CREEK BRIDGE
'� ♦` /" 'M .._ / Fl. S` t}' .•1� Y •. try ! •�
` _ I j jR� SPEED 1
LIMIT
30
T
" SPEED -A
•
LIMIT �,y�'`••a�w � ,t1
ol
jr ok" Of Or
,4
w
r ,
� Aw if � SPEED
SPEED. LIMIT
MY 1f�. i LIMIT f 30
, �� 45J . -'�`r 'I
r Study Area
Speed Check Locations
FIGURE 1: SPEED STUDY AREA
r
ROUND ROCK TEXAS
r¢vrr.uarAnce1
RADAR MOTOR VEHICLE SPEED
Field Tally Sheet
Date: 4/21/2021 County Williamson Hwy Creek Bend Blvd Just East of Soprano Way Location: 15410501
Time(from): 12 30 PM (to) 1 20 PM Weather Clear/Sunny
Surface Type. Asphalt Surface condition. Dry / Smooth
AUTOMOBILES > AUTOMOBILES
M P H o = o M P H
NB Direction v E SB Direction: A E
c� U
>80 >80
79 79
78 78
77 77
76 76
75 75
74 74
73 73
72 72
71 71
70 70
69 69
68 68
67 67
66 66
65 65
64 64
63 1 134 63
62 133 62
61 133 61
60 1 133 60
59 0 132 59
58 0 132 58
57 0 132 57
56 0 132 56
55 1 134 0 132 55
54 2 133 0 132 54
53 2 131 0 132 53
52 4 129 0 132 52
51 4 125 1 132 51
50 6 121 1 131 50
49 4 115 3 130 49
48 8 111 5 127 48
47 14 103 7 122 47
46 11 89 5 115 46
45 22 78 11 110 45
44 16 56 13 99 44
43 13 40 17 86 43
42 12 27 22 69 42
41 3 15 14 47 41
40 6 12 14 33 40
39 3 6 10 19 39
38 0 3 4 9 38
37 1 3 2 5 37
36 1 2 3 3 36
35 1 1 35
34 34
33 33
32 32
31 31
<30 <30
Total Automobiles 134 Total Automobiles 134
X 085 X 085
85th Percentile Automobile 114 85th Percentile Automobile 114
85th Percentile Speed(m p h ) 49 85th Percentile Speed(m.p.h) 46
Reorder: Randel G.Lenz
RADAR MOTOR VEHICLE SPEED
Field Tally Sheet
Date: 4/21/2021 County:Williamson Hwy:Creek Bend Blvd Just South of Brushy Creek Bridge Location: 15410502
Time(from): 11:45 AM (to): 12:25 PM Weather: Clear/Sunny
Surface Type Asphalt Surface condition: Dry / Smooth
AUTOMOBILES > AUTOMOBILES >
M cc
M P.H. 75 o o M.P.H.
NB Direction: v E 1-- SB Direction: E �
U U
>80 >80
79 79
78 78
77 77
76 76
75 75
74 74
73 73
72 72
71 71
70 1 129 70
69 128 69
68 128 68
67 128 67
66 128 1 66
65 128 1 65
64 128 64
63 128 63
62 1 126 1 128 62
61 125 128 61
60 125 128 60
59 125 128 59
58 125 128 58
57 125 128 57
56 125 128 56
55 125 1 128 55
54 1 125 1 128 54
53 3 124 127 53
52 4 121 1 127 1 52
51 3 117 1 126 51
50 7 114 5 125 50
49 5 107 5 120 49
48 11 102 1 1 115 48
47 5 91 5 114 47
46 9 86 9 109 46
45 15 77 11 100 1 45
44 19 62 16 89 44
43 17 43 14 73 43
42 9 26 14 59 42
41 10 17 1 11 45 41
40 5 7 12 34 40
39 0 2 10 22 39
38 0 2 7 12 38
37 1 2 2 5 37
36 1 1 1 3 36
35 0 0 2 35
34 0 1 2 34
33 0 1 33
32 0 1 1 32
31 0 1 1 31
<30 <30
Total Automobiles 126 Total Automobiles 129
X 085 X 0.85
85th Percentile Automobile: 107 85th Percentile Automobile: 110
85th Percentile Speed(m.p.h.). 49 85th Percentile Speed(m.p.h.): 47
Reorder: Randel G.Lenz
NB at Creek Bend Blvd and Brushy Creek Bridge
Speed Distribution
20
18
16
14
w
u 12
L
m 10
>
O 8
6
4
2
0
30 35 40 45 50 55 50
Vehicle Speed
NB at Creek Bend Blvd and Brushy Creek Bridge
Cumulative Speed Distribution
140
120
y 100
r 80
v
> 60
0
ae 40
20
0
30 35 40 45 50 55 60
Vehicle Speed
SB at Creek Bend Blvd and Brushy Creek Bridge
Speed Distribution
18
16
14
y 12
10
v
> 8
`0
u 6
4
2
0
30 35 40 45 50 55 60
Vehicle Speed
SB at Creek Bend Blvd and Brushy Creek Bridge
Speed Distribution
140
120
y 100
u
t 80
a+
> 60
0
u 40
20
0
30 35 40 45 50 55 60
Vehicle Speed
NB at Creek Bend Blvd and Soprano Way
Speed Distribution
25
20
w
u_ 15
L
w
0 10
A
5
0
30 35 40 45 50 55 50
Vehicle Speed
NB at Creek Bend Blvd and Soprano Way
Cumulative Speed Distribution
160
140
120
w
u 100
> 80
0 60
A 40
20
0
30 3S 40 45 50 55 60
Vehicle Speed
SB at Creek Bend Blvd and Soprano Way
Speed Distribution
25
20
v
1s
L
N
>
p 10
A
5
0 �
30 40 45 50 55 c_
Vehicle Speed
SB at Creek Bend Blvd and Soprano Way
Speed Distribution
140
120
u wo
L so
v
> 60
0
A 40
20
0
30 35 40 4S S0 55 60
Vehicle Speed
l