PASSIVE SAFE ROAD INFRASTRUCTURE

POLES FOR PUBLIC LIGHTING

Demeter Prislan

Reduction in road deaths since 1990

MONETARY VALUE OF FATALITY

1,70 million EUR

Road collision result in many kinds of social and economic costs, such as human loses, medical costs, production loss, property

damage, settlement costs and costs due to congestion

Passive safety is a serious issue for the welfare of any national economy

LIGHTING COLUMNS ARE ….

KILLING OBSTACLES !

BUT IT NEEDS NOT TO BE SO ….

IF THE LIGHTING COLUMNS ARE FULFILLING

THE REQUIREMENTS OF THE EN 12767 (Passive Safety of Support Structures

for Road Equipment)

PASSIVELY SAFE LIGHTING COLUMNS need to comply with the classification of the

energy absorption

Impact speed, vI

km/h 50 70 100

Energy absorption

category

Exit speed, ve

km/h

HE (high) ve = 0 0 ve 5 0 ve 50

LE (low) 0 < ve 5 5 < ve 30 50 < ve 70

NE (none) 5 < ve 50 30 < ve 70 70 < ve 100

PASSIVELY SAFE LIGHTING COLUMNS

need to comply with the classification of the occupant safety level

Energy absorption categories Occupant safety level

Speeds

Mandatory low speed impact test - 35 km/h

Speed class impact tests 50, 70 and 100 km/h

Maximum values Maximum values

ASI THIV km/h

ASI THIV km/h

HE 3 1,0 27 1,0 27

HE 2 1,0 27 1,2 33

HE 1 1,0 27 1,4 44

LE 3 1,0 27 1,0 27

LE 2 1,0 27 1,2 33

LE 1 1,0 27 1,4 44

NE 3 0,6 11 0,6 11

NE 2 1,0 27 1,0 27

NE 1 1,0 27 1,2 33

EXAMPLE OF PASSIVELY SAFE LIGHTING COLUMN

function principle → construction detail ↓

rivets

EXAMPLE OF PASSIVELY SAFE LIGHTING COLUMN

every column should have a certificate

RECOMMENDATIONS FOR APPLICATION Flemish Road Administration: • On all roads where the allowed speed is over 50 km/h and

where are no guardrails in front of the lighting columns, • On all roads where the allowed speed is under 50 km/h but

the lighting columns must be closer than 2m from the edge of the pavement and there are no guardrails in front of the columns,

• On all roundabouts where the speed is not limited to 30 km/h and

• In places where a big possibility for a vehicle to crash into the pole exists: roads leading to roundabouts, roads between roundabouts, curves, crossings with sharp angles, etc.

RECOMMENDATIONS FOR APPLICATION Slovenia Technical Specifications TSC 02.210.:2010 (Varnostne ograje – Pogoji in

način postavitve) (Safety fence – Conditions and mode of installation) The guardrail must be instaled if the distance of the dangerous

obstacle from the edge of the traffic surface is smaller than the values stated in the table 1 (page9). The TSC distinguish dangerous obstacles type A and type B. Type B are:

• lines of trees which trunk diameter is bigger than 15 cm, • street ligting poles or poles for other instalation except in case when,

by performed crash tests, these poles reach the appropriate values according to slovenian standard SIST EN40 and SIST EN12767

• and similar

FORGIVING ROADSIDE … JUST A WISH? • European Transport Safety Council is encouraging the

authorities and investors to prescribe and use passive safe infrastructure elements

• Using passive safe infrastructure brings direct savings to the states’ budgets

• Using passive safe infrastructure can preserve the society from emotional and ethical stress situation

• Using passive safe infrastructure elements need not to be more expensive than conventional solutions what had been proven in the case of lighting poles

STILL ….

there are voices (comming from consultants, engineers, clerks, different levels of institutions involved in road designing

and management) telling that:

• there are no rules how and when to use the passive safe road infrastructure

• national rules do not allow to use passive safe road infrastructure

• there is no law imposing obligation to use passive safe road infrastructure

• ?????????????????????????????????????????????????????

SORRY: DO WE NEED A LAW THAT WILL ALLOW US NOT TO KILL PEOPLE?

LET’S TRY TO PREVENT SUCH SCEENS

START USING PASSIVE SAFE ROAD FURNITURE

NOW !

… we all are only human ….

THANKS FOR YOUR ATTENTION !