National Learner Road Safety Seminar - Arrive Alive Learner... · 2015. 7. 14. · •Role of...
Transcript of National Learner Road Safety Seminar - Arrive Alive Learner... · 2015. 7. 14. · •Role of...
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National Learner Road Safety
Seminar
30 June 2015
Road Safety Infrastructure Randall Cable Pr Eng, SANRAL
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Overview
–Important Role of Infrastructure
–Network Level Strategies
–Project Level Strategies
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Road Safety in South Africa
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Road Safety – A Global Plan
• Without new initiatives,
– 50 million deaths and 500 million serious injuries on the world’s roads over the first 50 years of the 21st century
http://www.who.int/roadsafety/decade_of_action/plan/plan_english.pdf
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South African Road Network
750 000 km
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South Africa has the 10th Longest Total
Network in the World
Roads Represents one of the largest
public infrastructure investments in most
countries
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South African Road Network
Authority Paved Gravel Total
SANRAL 21,403 0 21,403
Provinces - 9 44,400 136,640 181,040
Metros - 8 51,682 14,461 66,143
Municipalities 37,691 302,158 339,849
Total 153,719 453,259 606,978
Un-Proclaimed (Estimate) 140,000 140,000
Estimated Total 153,719 593,259 746,978
Un-Proclaimed Roads = Public roads not formally gazetted by any Authority
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21 403
(18 283)
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SANRAL Road Network
• The SANRAL road network has grown
– 7 200 km in 1998
– 21 403 km in 2014
• The 21 403 km represents only 2.8 % of the 750 000 km of RSA network
– but carries 26,6% of all traffic, and
– 70% of all long distance road freight.
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Pillar 2: Safer Roads and Mobility
• Role of Infrastructure in Road Safety is proven
• UN Decade of Action Plan, places strong emphasis on the role that infrastructure can play in improving road safety
• Continue to invest in our national road asset – 2009/10 to 2014/15, SANRAL awarded > 1000
contracts worth more than R70 billion for new works, rehabilitation and improvement, and various maintenance cycles
– 2015/16, SANRAL allocated R12,5 billion Non-Toll network
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Safe Systems Approach • Despite all efforts to prevent crashes, road users will
remain fallible and crashes will occur.
• Safe System approach is to ensure that in the event of a crash, the impact energies remain below the threshold likely to produce either death or serious injury.
• It stresses that those involved in the design of the road transport system need to accept and share responsibility for the safety of the system, and those that use the system need to accept responsibility for complying with the rules and constraints of the system.
Pillar 2: Safer Roads and Mobility
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Pillar 2: Safer Roads and Mobility
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• Engineering Priorities: Pedestrians
–Genuine need for pedestrians to cross or travel along major routes.
• Vulnerable Road Users: Pedestrians
• Poorest of the poor - Captive Road Users
–Poor land use planning resulting in unsafe desire lines
Pillar 2: Safer Roads and Mobility
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Impact of Land Use Development
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0
50
100
150
200
250
300
350 N
o. o
f p
edes
tria
ns
Number of pedestrians crossing at N7 per hour of day, for a Friday
Impact of Land Use Development
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• Urgent need for housing, extreme dangers of settlements in the river bed
• Poor town planning of the past = physical barriers • Only expansion possible is to the south of the N1
N N
Impact of Land Use Development
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Relocated Settlement to the South of the N1
First Phase
Next Phase
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National Route 1 Section 3 De Doorns Safety Project
Pedestrian Activity on the N1 generated by New Settlement
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Retrofit existing infrastructure A Safer Place to Walk
After
Before
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Retrofit existing infrastructure A Safer Place to Cross
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Or…… we can calm traffic …..
60
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Road Network Assessment
• Method to determine road safety risk - mitigate
• Network Level Tool
• Overcome limited accurate crash data available
• Inform where to intervene and invest
• Highest Return for our Road Safety Investment
• Develop a Model that other Road Authorities can use
Network Level Strategies
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• NetSafe©
– Identify and prioritize locations where road safety improvements and/or interventions are likely to be most effective
– Locations for further investigations
Network Level Strategies
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Ri = RL + ∑ RP ∆ L
• Where: • Ri = Risk index per km road length • RL = Risk index related to length-based factors
(per km) • RP = Risk Index related to point-based factors
(e.g. intersections) • ∆L = Length of section road (e.g. 10 m)
Risk Index
NetSafe©
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RP = FS x RPO X F1P X F2P .....
• Where: • RL = Risk index related to length based factors • FS = Adjustment factor for CRASH severity • RLO = Baseline risk index per km road length • F1L, F2L = Length based accident factors
RL = FS x RLO X F1L X F2L .....
Where: RP = Risk index related to point based factors FS = Adjustment factor for CRASH severity RPO = Baseline risk index per point F1P, F2P = Point based accident factors
NetSafe©
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• Video Data Collection
NetSafe©
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NetSafe©
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Netsafe Results
Distance km
Ris
k In
dex
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NetSafe© Road Safety Risk Index
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NetSafe© Road Safety Risk Index
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NetSafe© Road Safety Risk Index
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Location of Schools, Village Areas, Speed Limits
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N7 DuNoon
N2 Somerset West
R300 Freeway
N1 Freeway
N2 Freeway
Pedestrian Freeway Count Pedestrian Crossing Activity
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Pedestrian Freeway Count Crossings: Pedestrian Bridges versus At-grade
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Project Level Crossings: Pedestrian Bridges versus At-grade
R300 Freeway
N2 Somerset West
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R300 Freeway Pedestrian Bridge
Location: Major existing pedestrian desire line
More than 1500 illegal and unsafe Pedestrian crossings at this location daily
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• Construction
R300 Freeway Pedestrian Bridge
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• Fencing
R300 Freeway Pedestrian Bridge
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• Taking approach ramps into communities
R300 Freeway Pedestrian Bridge
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• Although topography not ideal, high usage rate
Property boundary fencing
R300 Freeway Pedestrian Bridge
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R300 Freeway Pedestrian Bridge
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R300 Freeway Pedestrian Bridge
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R300 Freeway Pedestrian Bridge
• Monitor Pedestrian Infrastructure
• Pedestrian Bridge Surveillance
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Pedestrian Freeway Count Crossings: Pedestrian Bridges versus At-grade
R300 Freeway
N2 Somerset West
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Project School Level International Road Assessment Programme (iRAP)
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Route to School Star Rating
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Conclusions
• Road Safety Infrastructure has an important road safety function to fulfil. (UN DoA for Road Safety)
• Road Safety Infrastructure alone can significantly reduce the risk of serious injury and death in the event of a crash. (Evidence based)
• Network level strategies can identify road safety risk which can be mitigated
• Project and school level approaches must;
• Clam traffic in the immediate vicinity of the school
• Assess the entire journey to and from school