O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety...
-
Upload
clare-gaines -
Category
Documents
-
view
220 -
download
0
Transcript of O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety...
![Page 1: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/1.jpg)
OVERVIEW OF THE NEW HIGHWAY SAFETY MANUAL
Ray Krammes, FHWA
Missouri Traffic & Safety ConferenceMay 12, 2009 Columbia, Missouri
![Page 2: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/2.jpg)
Presentation Summary
• What is the HSM?• Why is the HSM needed?• What is covered by the HSM?• Who should use the HSM?• When will the HSM be available?• What support will be available to implement
the HSM?• Where can one find more about the HSM?
![Page 3: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/3.jpg)
WHAT IS THE HSM?Overview of the new HSM
![Page 4: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/4.jpg)
WHAT IS THE HSM?
![Page 5: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/5.jpg)
THE VISION OF THE HSM - A DOCUMENT AKIN TO THE HCM
11
22
33
![Page 6: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/6.jpg)
WHAT THE HSM IS NOT
• The HSM does not set requirements or mandates• The HSM is not a best practice document for design or
operations.• The HSM contains no warrants or standards
and does not supersede other publications that do.
vs
![Page 7: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/7.jpg)
WHY IS THE HSM NEEDED?Overview of the new HSM
![Page 8: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/8.jpg)
IS THIS ROAD “SAFE” OR “UNSAFE”?
What does safety really mean?
![Page 9: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/9.jpg)
Examined in reference to compliance with standards, warrants, guidelines and sanctioned design procedures
The expected or actual crash frequency and
severity for a highway or roadway
HIGHWAY SAFETY HAS TWO DIMENSIONS
*Ezra Hauer, ITE Traffic Safety Toolbox Introduction, 1999
![Page 10: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/10.jpg)
SUBSTANTIVE SAFETY MAY VARY WHEN NOMINAL SAFETY DOES NOT
Existing ConditionsExisting Conditions Alternative 1Alternative 1
Alternative 2Alternative 2 Alternative 3Alternative 3
![Page 11: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/11.jpg)
Substantive Safety
• Best measured in terms of expected (long-term) average crash frequency
• Ways to estimate:– Crash data– Predictive methods
• Safety Performance Functions (SPFs)• Accident Modification Factors/Functions (AMFs)
– Combination (Empirical Bayes)
![Page 12: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/12.jpg)
1983-1985 Accidents
0
1
2
3
4
5
6
7
8
9
10
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5
Mile Point
Num
ber
of A
ccid
ents
![Page 13: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/13.jpg)
1986-1988 Accidents
0
1
2
3
4
5
6
7
8
9
10
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5
Mile Point
Num
ber
of A
ccid
ents
![Page 14: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/14.jpg)
1989-1991 Accidents
0
1
2
3
4
5
6
7
8
9
10
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5
Mile Point
Num
ber
of A
ccid
ents
![Page 15: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/15.jpg)
1992-1994 Accidents
0
1
2
3
4
5
6
7
8
9
10
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5
Mile Point
Num
ber
of A
ccid
ents
![Page 16: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/16.jpg)
1983-1995 Accidents
0
2
4
6
8
10
12
14
16
18
20
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5
Mile Point
Num
ber
of A
ccid
ents
![Page 17: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/17.jpg)
WHAT IS COVERED BY THE HSM?Overview of the new HSM
![Page 18: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/18.jpg)
OUTLINE OF THE HSM
![Page 19: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/19.jpg)
PART AINTRODUCTION, HUMAN FACTORS, &
FUNDAMENTALS
![Page 20: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/20.jpg)
Npredicted = Nspfx*(AMF1x*AMF2x*... *AMFyx )*Cx
Where,Npredicted = predicted average crash frequency for a
specific year for site type x;Nspf x = predicted average crash frequency determined
for base conditions of the SPF developed for site type x;
AMFyx = Accident Modification Factors specific to SPF for site type x;
Cx = calibration factor to adjust SPF for local conditions for site type x.
![Page 21: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/21.jpg)
PART BROADWAY SAFETY MANAGEMENT PROCESS
4 6 7 8 9
![Page 22: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/22.jpg)
Chapter 4. Network Screening
![Page 23: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/23.jpg)
PART CPREDICTIVE METHODS
Special Part C Special Part C Common ProceduresCommon Procedures
• Calibration• Combining predicted
with observed crashes
![Page 24: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/24.jpg)
Exhibit 10-5: Graphical Form of SPF for Rural Two-Lane Two-Way Roadway Segments(Equation 10-6)
![Page 25: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/25.jpg)
Exhibit 10-9: Graphical Representation of the SPF for Four-leg STOP controlled (4ST) Intersections(Equation 10-9)
![Page 26: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/26.jpg)
PART DACCIDENT MODIFICATION FACTORS
![Page 27: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/27.jpg)
Exhibit 10-16: AMF for Shoulder Width on Roadway Segments (AMFwra)
![Page 28: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/28.jpg)
WHO SHOULD USE THE HSM? Overview of the new HSM
![Page 29: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/29.jpg)
WHO SHOULD USE THE HSM?
![Page 30: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/30.jpg)
WHEN WILL THE HSM BE AVAILABLE?
Overview of the new HSM
![Page 31: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/31.jpg)
IMPLEMENTATION SCHEDULE
![Page 32: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/32.jpg)
WHAT SUPPORT WILL BE AVAILABLE TO IMPLEMENT THE HSM?
Overview of the new HSM
![Page 33: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/33.jpg)
TRAINING & OUTREACH ACTIVITIES
• Sept – Nov 2009– Conduct two or three multi-state pilot courses
• TRB 2010 Annual Meeting– One-day workshop
• Training materials, including “Train-the-trainer” available upon HSM release
![Page 34: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/34.jpg)
FHWA Tools Supporting HSM Use
HSM Part Supporting Tool
PART B: Roadway Safety Management Process
SafetyAnalystwww.safetyanalyst.org
PART C: Predictive Methods
IHSDMwww.ihsdm.org
PART D: Accident Modification Factors
CRF/AMF Clearinghouse
![Page 35: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/35.jpg)
WHERE CAN ONE FIND MORE ABOUT THE HSM?
Overview of the new HSM
![Page 36: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/36.jpg)
http://www.highwaysafetymanual.org
![Page 37: O VERVIEW OF THE N EW H IGHWAY S AFETY M ANUAL Ray Krammes, FHWA Missouri Traffic & Safety Conference May 12, 2009 Columbia, Missouri.](https://reader036.fdocuments.net/reader036/viewer/2022062409/56649eb15503460f94bb73b9/html5/thumbnails/37.jpg)
THE END
Questions?