a10 simposio vancouver 2015 argentina countryreport
TRANSCRIPT
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Francisco Justo Sierra Alejandra Débora Fissore
ARGENTINA COUNTRY REPORT
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ARGENTINA
• 2,800,000 km2 (0.3 of Canada Total Area)
• 43,000,000 inh (1.2 of Canada Total Population)
• 80,000 km Paved Roads (0.2 of CPR)
• 7,500 Annual Road Fatalities (3.7 CARF)
• 17.6 deaths/100,000 inh (3 times Canada Road Death Rate)
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PURPOSE
Final REPORT2010 UPDATE of Geometric Design StandardsArgentina National Highway Administration
DNV 1967/80
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WHO, WHAT, WHEN
• National Highway Administration (DNV)
Civil Engineering Mountain School ofSan Juan National University (EICAM)
• 2010 Update of Geometric Design Standards• April 2009 – Term: 12 months
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WHY
• Milestones in Geometric Design 1967-2009not covered in the current DNV Standard 1967/80 The Clear Zone concept AASHO 1971 Addendum Highway Design Consistency Modern Roundabouts Test Levels and Justification of devices
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Chronology of Sources 1954-1980
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GU
IDE
54 57 65 67 68 71 73 74 77 80
STA
ND
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D D
NV6
7
STA
ND
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D D
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0
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Chronology of Sources 1980-2010
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FETY
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80 84 89 90 94 96 97 98 99 0 1 2 3 4 5 6 7 10
STA
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UN
ITED
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MEN
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UPD
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V10
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BACKGROUND
• Based on an Eclectic Selection of the most important findings over the past 50 years Ken Stonex AASHTO: Green and Yellow Book, Roadside Design Guide,
Highway Safety Manual (draft) Standards from Canada, South Africa, Australia, New Zeeland,
European Countries, South and Central American Countries
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OBJECTIVES
• Systematize, organize and standardize criteria• Promote design and construction of safer roads• Gather current DNV technical documents• Emphasize document’s Self-sufficiency and
Graphic Design
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SCOPE
Broad spectrum of roads in the National Network• Multilane highways, with
10,000 vehicles per hour
• Single two-lane two-way roads, with ADT<500
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CONTENTS
4 Volumes - 10 Chapters - 1 Atlas - 264 References
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C1 INTRODUCTION
• New approaches in the design philosophy• Compulsory Standards: V; SSD; Rmin; emax;
Lane, Paved Shoulders and Median Width; TL• Recommendations: CZ, DSD, ROW, Rumble
Strips, Barrier Alignment, Urban Crossing• Glossary
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C2 DESIGN CONTROLS
• Human Factor: to acknowledge possibility of errors induced by Road Design
• Speed: interactive relationship road design - speed• Access Management: planning and regulation to
reduce congestion and conflicts
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C3 GEOMETRIC DESIGN
• SSD according to AASHTO ’94Brake reaction t = 2.5 s; fl = wet pavement;100% V
• Distribution e and fAccording to DNV Nº 3
similar to AASHTO Nº 4
(1)
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C3 GEOMETRIC DESIGN
• Ratio Design
• Length of the transition spirals is limited. Long transitions are not recommended
(2)
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C3 GEOMETRIC DESIGN
• Clear Zone (ZD)
(3)
• Roadsides (CDC)
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C3 GEOMETRIC DESIGN
• Coordination of Horizontal and Vertical Alignment
• Aesthetics of Road Design
• Design Consistency
(4)
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C4 FREEWAYS
• Argentinian Superior Road Designs:Freeway, Autovía, Semi-Freeway
• General Considerations:Route-location and Alignments, Cross Section, Median, Lane Balance, Frontage Roads
• Good and wrong practices
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• Latest improvements borrowed from international practice: Charts to select types of intersection, Alberta Intersection Sight Triangles, AASHTO Ramp width, DNV Turning Paths computer software Sizing of channelization components Modern Roundabouts, FHWA
C5 INTERSECTIONS
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C6 INTERCHANGES
• Selection and Warrant• Desirable Design features• Ramp Design• Review of the length of speed-change lanes• Types• Other issues: pedestrian’s facilities, lighting
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• FC and ROR may be the result of drivers’ actions
C7 ROAD AND ROADSIDE SAFETY(1)
Involuntary: Driver own error, or due to Road condition or Vehicle failure
Voluntary: incorrect passing manoeuvre or maneuvers to avoid a dangerous situation
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• To reduce the number of deaths, serious injuries and material damage, the following should be taken into account: The safety of vehicles on the roadway Reduction of risk in the event of a ROR crash Reduction of the severity of the damage in such case
C7 ROAD AND ROADSIDE SAFETY(2)
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Keeping vehicles on the roadway
C7 ROAD AND ROADSIDE SAFETY(3)
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Hazardous Conditions
(4)
Hazardous Objects
C7 ROAD AND ROADSIDE SAFETY
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Hazardous conditions Flatten slopes
more than 1:4
Design traversable profile ditches and rounded edges
(5)
Hazardous objects Remove Redesign Relocate Reduce impact severity Redirect Delineate
C7 ROAD AND ROADSIDE SAFETY• Hazard treatments on forgiving roadside
to reduce the risk and severity of crashes
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(6)
Sometimes they are Not Necessary
C7 ROAD AND ROADSIDE SAFETY
Barriers are Hazardous Sometimes they are of
Utmost Importance
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(7)
C7 ROAD AND ROADSIDE SAFETY
Barriers Classification Justification
TL selection
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End Treatments
Transitions
Bridge Railings
(8)
Length of Need
C7 ROAD AND ROADSIDE SAFETY
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C8 SPECIAL DESIGNS
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C9 ROUTE LOCATION
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• Stages definition and project documentation• Topographic surveys• Measurement tolerance• Project plans• Engineering reports submission• Technical and administrative procedures for Design Exceptions
C10 GENERAL INSTRUCTION
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ATLAS
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Complete text and all references can be downloadedhttp://ingenieriadeseguridadvial.blogspot.com.ar
• General Reference Literature: 40 Spanish or translated into Spanish documents included
• Particular Reference Literature: 224 Spanish or translated into Spanish documents included
REFERENCES
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• Ezra Hauer
“Roads designed to standards are not safe, unsafe orappropriately safe; they have an unpremeditated level ofsafety. There are only more or less safe roads.”
A myth to be dispelled: “Only drivers cause crashes, not roads.”(1999)
CONCEPTUAL APPROACH
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• Pascual Palazzo
“There is but one way to avoid crashes, and that is to makethem unlikely. But not unlikely for an ideal species ofprudent, thoughtful, intelligent drivers and pedestrians withrapid reactions, but for ordinary men as they are or becomein the different circumstances of daily life.” (1937)
CONCEPTUAL APPROACH
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STANDARDUPDATE
NOTENFORCED
June 2015STATUS
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ACKNOWLEDGMENTThe authors are grateful for the helpand the permanent encouragement of
Dr. John Morrall, P.Eng.
And to you for your attention
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