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TRB-ERF, 11 April2013
SAVeRSSelection of AppropriateVehicle Restraint Systems
Prof. Francesca La Torre, PhD, PECoordinator of the SAVeRS Project
Full Professor of Roads, Railways and Airport EngineeringUniversity of Florence
Civil and Environmental Engineering [email protected]
TRB-ERF, 11 April2013
Cross-border funded Transnational Research Programme funded by Belgium/Flanders, Germany, Ireland, Norway, Sweden,
United Kingdom
TRB-ERF, 11 April2013
SAVeRSSelection of Appropriate Vehicle Restraint Systems
Subcontractor:
TRB-ERF, 11 April2013
Objectives of SAVeRS
The objective of the SAVeRS project is to produce a practical and readily understandable Vehicle
Restraint System (VRS) guidance document and a user-friendly web-based tool that will allow the selection of the most appropriate solution in different road
and traffic configurations for all types of VRS: safety barriers including parapets, crash cushions (including truck-
mounted attenuators), terminals and transitions, motorcycle protection devices.
TRB-ERF, 11 April2013
Workplan of SAVeRSW
P0 –
Pro
ject
Man
agem
ent
Fran
cesc
a La
Tor
re (U
NIF
I)
WP1 – Definition of ParametersGavin Williams (TRL)
TK 1.1Analysis of NRA methodologies
(TRL)[with TCD, UNIFI,
VTI, AIT, ZAG, BRRC]
TK 1.2Literature
Review(TCD)
[with TRL, UNIFI, VTI, AIT, ZAG,
BRRC]
WP4
– D
isse
min
ation
and
Wor
ksho
psBi
ne P
enga
l (ZA
G) [
with
all]
WP2 – Influence of ParametersRobert Thomson (VTI)
TK 2.1Analysis of severity of
incidents(AIT)
[with UNIFI, TRL, VTI, TCD, ZAG]
TK 2.2Whole life cost
analysis(VTI)
[with UNIFI, TRL, AIT, TCD, ZAG]
WP3 – Creation of the Guidance DocumentFrancesca La Torre (UNIFI)
TK 3.1 – Preparation of the Guideline (UNIFI)[with TRL, VTI, ZAG, AIT, BB]
TK 3.2 – Validation of the VRS placement guidance (UNIFI)[with TRL, AIT, BB]
TK 3.3 – Pilot application to a project (BB)
TRB-ERF, 11 April2013
Timetable of SAVeRS
Janu
ary
1, 2
013
Dec
embe
r 31,
201
4
Total Budget of 525 k€ (approx. 700 k US$)
TRB-ERF, 11 April2013
The expected outcomeThe Guideline will be structured in 5 sections:
Identification of the need for a VRS (barrier placement guidance): allow the user to identify if there is a need for a VRS and the LON;
Safety barriers (including parapets): provide guidance for selecting the most appropriate VRS, which is tested according to EN1317-2 will be provided in different road section configurations.
Crash cushions (including TMAs), terminals and transitions: this section of the guide allow to select the attenuators according to EN1317-3 and the Truck Mounted Attenuators (TMAs) for which a European Technical Specification is still under development and that are currently tested according to the US NCHRP350 or the UK Highways Agency’s TD49/07.
Motorcycle restraint systems (MRS): this section of the guideline will provide a tool to identify where an MRS tested according to EN Technical Specification CEN/TS 1317-8 (“Road restraint systems Motorcycle road restraint systems which reduce the impact severity of motorcyclist collisions with safety barriers”) is required and the criteria to select the most appropriate MRS;
Recommendation for the implementation of the guideline by National Road Administrations.
TRB-ERF, 11 April2013
The expected outcome
The applicability of the Guide will be tested in a Pilot Project by Balfour
Beatty Major Civil Engineering
The Guide will be implemented in a user-friendly web-based tool
The selection criteria in the Guide will be based also on life cycle principles
TRB-ERF, 11 April2013
National standards …..Collect:• National standards• National guidelines• Available database from Road Authorities, police, research
institutes, etc…
Categorize:• Which parameters are used for assessing the need and the
type of VRS• Which approach are used for assessing the need and the
type of VRS
Produce:• Data Matrix: which essential parameters will be
analyzed in WP2• Report part 1.1
TRB-ERF, 11 April2013
Data matrix
Aus
tria
Belg
ium
Fran
ce
Ger
man
y
Irel
and
Ital
y
Slov
enia
Spai
n
Swed
en
The
Net
herl
ands
UK
……
……
……
Location on the road (median, external shoulder, bridge)Traffic
Average annual daily traffic (ALL)Average annual daily traffic (HGV)
Percentage of HGVSafety of different types of road users and third partiesSpeed
Local Speed LimitsDesign Speed
Availability of space to correct driving errorsExternal risks Infrastructure alongside, above and below the roadObjects attached to the VRS Road ClassRoad geometry
Radius of curvatureGrade
Cost of damage to sub-structures, bridges, retaining walls...
Partially protected areas for road workersDurability and aesthetic aspects
Example of data matrix (not th
e
actual matrix
)
One for the need identification and one for th
e VRS
perform
ance selection (for each VRS)
TRB-ERF, 11 April2013
National standards …..
TRB-ERF, 11 April2013
National standards …..
TRB-ERF, 11 April2013
TK1.1 Analysis of National Road Authority methodologies
National Requirements from 18 European and 3 non –European countries collated to date…..
…but if you are not on the map, we want to hear from you…
National standards …..
Gavin Williams - [email protected]
TRB-ERF, 11 April2013
Literature review …..
pedestrians, equestrians, cyclists
vehicles/trucks
third parties (bridges, railway, etc…)
safety TCD TRL UNIFIcost VTI TRL UNIFI
attenuators, terminals and transitions
barriers Motorcyclist Protection
Systems
safety ZAG TRL AITcost ZAG TRL ZAG
VRS+MPS
geographic, climatic and cultural conditions (including aesthetic and environmental sensibility)
TCD
Run-off road accidents TRL + ZAG
Giuseppina Amato - [email protected]
TRB-ERF, 11 April2013
Literature review …..
TAGS: N. papersSafety 44Cost 12Run-Off 14Barriers 28Crash Cushions 3Terminals 4Attenuators 5Transitions 2Motorcyclist 6Third Parties 4Geogr. Cult. etc. Influence 3
TRB-ERF, 11 April2013
For more details
Prof. Francesca La Torre, PhD, PECoordinator of the SAVeRS Project
Full Professor of Roads, Railways and Airport EngineeringUniversity of Florence
Civil and Environmental Engineering [email protected]
www.saversproject.com
