Work Session_Speed Study Data Related to Automated Speed EnforcementCity of Dubuque
City Council Meeting
ITEM TITLE
SUMMARY:
SUGGESTED
DISPOSITION:
Copyrighted
June 20, 2023
Work Session - Top # 01.
5:30 PM - Speed Study Data Related to Automated Speed Enforcement
Recommendation
City staff will make a presentation on speed study data related to
automated speed enforcement.
ATTACHMENTS:
Description
Speed Study Data Related to Automated Speed
Enforcement
Type
Supporting Documentation
Speed Study Data
Related to Automate
Speed Enforcement
June 201h 1 2023
THE CF
D!Uj--B E
Masterpiece on the Mississippi
::a
National
Transportation
Safety Board
Reducuzg Speeding -Related Crashes
frivolving Passenger Vehicles
Safety Study
NTSMS-171a1
PB2017-102341
Study Name: - Safety Study Reducing Speeding -Related
Is Crashes Involving Passenger Vehicles.
Years published: - 2017.
r.o The study conducted a review of existing literature and
interviewed several stakeholders, including employees
�e from various government bodies and law enforcement
personnel
It also analyzed data from 2 national databases by
National Highway Traffic Safety Administration (NHTSA).
Table 1. Total and speeding -related traffic fatalities, 2005-2014
Year
Total Fatalities
Speeding -Related Fatalities
2005
43,510
13.583
2006
42,708
13,609
2007
41,259
13.140
2008
37,423
11,767
2009
33,808
10.664
2010
32,999
10,508
2011
32,479
10,001
2012
33,782
10,329
2013
32,894
9,696
2014
32,744
9,283
Total
363,606
112,580
Sources: NCSA 2016a; NCSA 2017
% Speeding Related
31.2
31.9
31.8
31.4
31.5
31.8
30.8
30.6
29.5
28.4
31.0
Speeding-related Fatalities Characteristics
• The NTSB researchers focused on fatal crashes in 2014 to
highlight some characteristics of speeding-related crashes.
• In 2014, 8,393 speeding vehicles were involved in fatal
crashes.
• Of these speeding vehicles, 6,422 (77%) were passenger
vehicles.
• They were involved in 6,369 fatal crashes.
• These resulted in 7,273 speeding passenger vehicle relates fatalities
(78%).
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8%
6°,0
4%
2%
0%
f Speeding Passenger Vehicles
t Non -Speeding Passenger Vehicles
1.6%
21-40 41-60
Reported Travel Speed (mph)
9.8%
O
a61
Source: MASS GES
.tFTi ■ ■ FTir
Table 3. Number and percent of fatal crashes involving speeding passenger vehicles, by road
2.000
type and land use, 2014
N
2 1,500
Rurall
Urban
All
.a
Road Type
>
Number
%
Number
`%
Number
%
H r
1.000
Interstate and Freeway
316
24.9
711
26.6
1,027
26.1
r m
y N
60.
Other Principal Arterial
598
18.9
699
16.6
1,297
17.6
R C
LL
n 500
Minor Arterial
687
25.6
551
21.3
1,238
23.5
h
Collector
1,019
29.3
282
282
1,301
29.0
Local
808
35.2
626
25.4
1,434
30.1
e
Total
3,469
26.7
2,892
22.2
6,369
24.4
s20 25-30 35-40 45-50 55-60 2!65
Reported Speed Limit (mph) Source: FARS
Source: FARS . Figure 3. Fatal crashes involving speeding passenger vehicles, by reported speed limit and land
use. 2014
Other Characteristics
Alcohol Impairment
• The NTSB examined alcohol -impairment
information for 6,409 speeding passenger
vehicle drivers involved in fatal crashes in
2014 and found that 2,739 (43%) were
alcohol -impaired.
• The remaining 3,670 speeding passenger
vehicle drivers (57%) were not alcohol -
impaired.
Age
• The three age groups with the most
speeding passenger vehicle drivers in fatal
crashes are under 20, 20- to 24-year-olds,
and 25- to 29-year-olds.
• These three groups include 3,167 drivers,
representing 50% of all speeding
passenger vehicle drivers in fatal crashes.
US Department of Transportation
Safe System Approach T
• U.S. DOT adopts a Safe System Approach as the guiding
paradigm to address roadway safety.
Safer Safer
• The Safe System Approach has been embraced by the People Vehicles
transportation community as an effective way to address and SAFE
mitigate the risks inherent in our enormous and complex A SYSTEM
transportation system.
Past -Crash
Care
r
Safer
Roads
•
•I•
•
The Effects of Speed on Roadway Fatalities
Safer People
Speeding increases both the frequency and severity of crashes, yet it is both persistent and largely accepted as the
Safer Roads
norm amongst the traveling public.2 U nsafe speeds are a well -documented and understood factor in death and
Safer Vehicles
injury, especially among people outside of a vehicle. Managing speeds and addressing issues of speeding will
improve safety.
Safer Speeds
Impact Speed and a Pedestrian's Risk of Death
Post -Crash Care
Speeding is a significant contributor to deaths on our roadways and is particularly hazardous to pedestrians. Vet,
How does safety impact U.S.
speeding remains worryingly common.
DDT's work in other priority
areas?
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Related Links
MPH MPH MPH MPH M.P.H..
• Read the U.S. DST National
70% 25% 50% 75% 90%
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Roadway Safety Strategy
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Masterpiece on the Mississippi
Dubuque Speed
Data -
"�Y. Engineering
Traffic Data Collection
• Traffic Studies
• Developments
• Speed studies
• Warrants
• Placed for 48 hours
• Annual Average Daily Traffic
(AADT)
SPEED DATA: NW Arterial
Between John F. Kennedy Rd & Central Ave
DATE SPEED DIRECTION
LIMIT
1 1 MPH NB
1 1 MPH SB
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
SPEED DATA: Peru Rd
Between Louella Ln &Louise Ln
DATE SPEED DIRECTION
LIMIT
• 30 MPH NB
• 30 MPH SB
11-15 16-20 21-25 26-30 31+ % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
M110 W�F
SPEED DATA: W 32nd St
at Tiffany Ct
DATE SPEED DIRECTION
LIMIT
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
SPEED DATA: NW Arterial
Between Plaza Dr & John F. Kennedy Rd
DATE SPEED DIRECTION
LIMIT
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
SPEED DATA: Central Ave
Between 24th St. & 25th St.
DATE SPEED •
LIMIT
5/16/23 25 MPH NB
5/16/23 25 MPH SB
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
SPEED DATA: Rhomberg Ave
Between Humboldt St & Schiller Rd
DATE SPEED DIRECTION
4/18/23 0 MPH NB
0
4/18/23 30 MPH 5B
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
SPEED DATA: N Grandview Ave
Between Aspen Dr & N Grandview Split
DATE SPEED DIRECTION
LIMIT
4/18/23
N
MPH
4/18/23
35 MPH
513
11-15 16-20 21-25 26-30
MPH MPH MPH MPH
31 + % OVER 10
MPH MPH
THRESOLD
SPEED DATA: Asbury Rd
Between Harvest View Dr & Matthew John Dr.
DATE SPEED DIRECTION
LIMIT
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
SPEED DATA: Clarke Dr
Between Clarke Crest Dr & Woodworth St
DATE SPEED DIRECTION
LIMIT
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
F,
SPEED DATA: Loral Blvd
Between Booth St & Glen Oak St
DATE SPEED
LIMIT
11-15 16-20
MPH MPH
DIRECTION
21-25 26-30 31 +
MPH MPH MPH
% OVER 10
MPH
THRESOLD
214�W.A
SPEED DATA: Pennsylvania Ave
Between Lenox St & Illinois Ave
DATE SPEED DIRECTION
LIMIT
11-15 16-20 21-25 26-30 31 +
MPH MPH MPH MPH MPH
% OVER 10
MPH
THRESOLD
SPEED DATA: NW Arterial
Between Asbury Rd & Pennsylvania Ave
3/20/23 50 MPH NB
3/20/23 50 MPH SB
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
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9/5/19
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9/5/19
f WB — AADT: 1,969
E B - AADT: 2,510
60i
35 MPH EB
35 MPH WB
408 114 25 14
L
23.3%
126
15
10.1%
SPEED DATA: Crescent Ridge
3651 Crescent Ridge
DATE SPEED •
LIMIT
9/23/21 25 MPH EB
9/23/21 25 MPH WB
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
SPEED DATA: S Grandview Ave
South of Plymouth Ct
DATE SPEED DIRECTION
LIMIT
4/18/23 25 MPH NB
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
SPEED DATA: Cedar Cross Rd
at 1095 Cedar Cross Rd
DATE SPEED DIRECTION
LIMIT
MPH
EB
9/23/21
35
9/23/21
35 MPH
11-15 16-20 21-25 26-30
MPH MPH MPH MPH
31 + % OVER 10
MPH MPH
THRESOLD
SPEED DATA: Kelly Ln
Between Edwards Rd & Kelly Hts
0 . .
0
P5/16/23 25 MPH NB
5/16/23 25 MPH SB
11-15 16-20 21-25 26-30
31 + % OVER 10
MPH MPH
THRESOLD
'r.
SPEED DATA: N Cascade Rd
At 11665 N Cascade Rd
DATE SPEED DIRECTION
LIMIT
t
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
of
A.
SPEED DATA: Rockdale Rd
at 2550 Rockdale Rd
0
•
3/23/16 25 MPH NB
3/23/16 25 MPH SB
11-15 16-20 21-25 26-30 31 + % OVER 10
MPH MPH MPH MPH MPH MPH
THRESOLD
U DATA
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1,138
133,803
22,432
16.8%
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THE CITY OF
DUBIaE
Masterpiece on the Mississippi
Automated
Speed
Cameras (ASE)
National Highway Traffic Countermeasures That fork:
. A Highway Safety Countermeasure Guide
Safety Administration For state Highway Safety Offices
Tenth Edition, 2020
• This guide is a basic reference to assist State-
Highway Safety Offices select effective,
science -based traffic safety countermeasures ti-
for major highway safety problems.
• From 2011 to 2020, multiple editions of this `
study have identified Automated Enforcement
as the more effective Countermeasure for
Speed Safety, grading the measure 5 stars.` '
• The only other Countermeasure provided the
5-star grading is speed limits.ooI
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Ttdc sQ4etynw.y NHT ► Mminlshallon
National Transportation
Safety Board (NTBS)
• Describes ASE as adata-driven,
technology-based solution for speed
enforcement in addition to other
data -driven approaches for in -person
speed enforcement.
• As of 2022, 183 US communities use
the ASE Systems.
5N�&TE
Mas€erpi4m on the 14ississippt
Creating are Equitable
Community of Choice
A High -Performance Organization (and Community) that is
Data -Driven and Outcome -Focused built on the four pillars of:
ThroughPlanning,
Partnerships,
& People
National Transportation Safety Board (NTBS)
• In 2007, NHTSA published a review of 13 studies of ASE
programs (including 1 US program).
• A 2010 review of 28 studies of ASE in the United States,
Europe, Australia, and New Zealand determined that all
studies had found fewer crashes in ASE areas after ASE
implementation.
• Most recently, in 2015, the IIHS published a
program in Montgomery County, Maryland,
2007.
Canada,
28
study of the ASE
which first began in
Centers for Disease Control and Prevention
• In addition, the Centers for Disease Control and Prevention
notes that ASE " can reduce crashes substantially" and includes
ASE as the only speeding- related countermeasure in their Motor
Vehicle Prioritizing Interventions and Cost Calculator for States
(MV PICCS).
Additional Reference
• Insurance Institute for Highway Safety (IIHS) Speed:-
https://www.iihs.org/topics/speed#overview
• https://www.transportation.gov/NRSS/SafeSystem
Thank you