ANAS - Innovation in road safety barriers

Anas innovation in road safety barriers Ing. Domenico Petruzzelli Anas Infrastructural Asset Road Network (DOCT/AIR) Executive

Ing. Nicola Dinnella Anas Road Infrastructure (DOCT/AIR/INS) Executive

31 March 2022

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ANAS’ INNOVATION; INDEX 01

Concrete road safety barrier

02

Steel road safety barrier

03

Motorcyclists protection system

04

Field testing tools

05

Protection for singular points

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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ANAS’ INNOVATION; INDEX 01

Concrete road safety barrier

02

Steel road safety barrier

03

Motorcyclists protection system

04

Field testing tools

05

Protection for singular points

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE AIM FOR CONCRETE BARRIERS BARRIERS THAT CAN ADAPT TO THE INFRASTRUCTURE This is the first video I saw when I was appointed barrier executive at Anas.

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE FIRST PROBLEM OF CONCRETE SAFETY BARRIER The working width Most of the existing concrete barriers have a working width (Wm) equal to W5; this implies a minimum required dimension of the traffic island of 2,80 m on average.

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE SECOND PROBLEM OF CONCRETE SAFETY BARRIER The connection between the different modular elements Most of the existing concrete barriers are connected by sleeves.

The tightening of the connection sleeve is particularly difficult in case of plano-altimetric misalignment of the elements.

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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ANALYSIS OF BARRIER KINEMATICS Question: Can we reduce the working width of concrete barriers? Let's watch the video.

AISICO Srl -Test House & Lab Pereto (AQ)Informazione ad uso interno

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE INTUITION Changing the connection

elimination of the connection sleeve

Creation of a joint with a HEM element 31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE INTUITION Changing the installation

Anchored to the pavement

Simply laid on the pavement

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE CRASH TEST: TB11 Determining the ASI index (Acceleration Severity Index) Test Vehicle (TB11): Car Weight: 900 kg Impact Angle: 20° Speed: 100 km/h

Impact Severity: ASI index: B (1,26)

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE CRASH TEST: TB81 Determining the working width W: H4b containment level: Truck weight: 38.000 kg

Impact angle: 20° Speed: 65 km/h Working width (W) TB11: W2 (0,68 m) – TB81: W2 (0,73 m) Dynamic deflection (D) TB11: 0,00 m – TB81: 0,05 m 31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE SECOND CRASH TEST: TB81 Determining the operating width (W) after the second impact Anas decided to carry out a second crash test TB81 on the already crashed barrier, at exactly the same spot.

The results were surprising.

Working width (W) 2° Crash test TB81: W2 (0,74 m)

Dynamic Deflection (D) 2° Crash test TB81: 0,10 m

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE SECOND CRASH TEST: TB81

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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IN CONCLUSION…

BEFORE

AFTER BARRIERS THAT CAN ADAPT TO THE INFRASTRUCTURE

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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INNOVATION ON ROAD SAFETY BARRIERS: NDBA (Nationale Dynamic Barrier Anas) The NDBA allows for the installation of center barriers where available space is limited.

Types available today are: ▪

NDBA Asphalt

→ bilateral barrier installed on asphalt

▪

NDBA Concrete

→ bilateral barrier installed on concrete structures

▪

NDBA Asphalt in lightweight cls

→ bilateral barrier installed on asphalt

▪

NDBA Bridge

→ unilateral bridge barrier

▪

NDBA Bridge no handrail

→ unilateral bridge barrier without handrail

▪

NDBA Redirective

→ unilateral redirective profile in tunnel

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE NDBA ADVANTAGES High mechanical and performance levels – W2 New kinematic mechanism - Creation of a joint with a HEM element Easy installation and low maintenance cost Unico profilo e aumento dei livelli di confort Costo Contenuto e prestazioni elevate Bassi costi della linea produttiva Aumento delle condizioni di visibilità della strada Assenza di abbagliamento 31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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THE NDBA ADVANTAGES Unique profile and increased comfort levels

Low cost and high performance Low production line costs - One formwork for all barriers Increased road visibility conditions - Introducing blue line at driver's eye level Absence of glare from vehicles - Height of barriers 1.20m

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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Technological innovation The technological system is able to sign an impact caused by an accident in real time through accelerometers installed between the elements.

A software platform allows to localize the exact point where the impact took place, regulating the switching on of specific LEDs located on the barrier, so as to signal in real time to oncoming users the point of impact and the need for additional attention.

Addition parameters detected by the sensors

✓ ✓ ✓ ✓ ✓ ✓

Traffic direction and intensity Temperature and humidity Presence of vehicles travelling on the wrong side of the road Construction sites and work in progress Presence of dangerous curves Broken down vehicles along the roadway 31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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MANUFACTURING SITES With the development of the NDBA (National Dynamic Barrier Anas), Anas has become the facto producer/manufacturer of safety barriers.

So, ANAS started the «Manufacturing Site Certification Procedure» to identify companies which could produce the barriers.

The distribution, shown in the figure, allows for immediate supplies to job sites with significant facilitation for rapid completion of work.

To date, Anas has 430 million of € available for the installation of the NDBA barrier.

31/03/2022 Anas’ innovation in road safety barriers I Eng. Domenico Petruzzelli, Eng. Nicola Dinnella

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