2 8 01 the Acceptance of Red Lights at LX Presentation[1]

7/30/2019 2 8 01 the Acceptance of Red Lights at LX Presentation[1]

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GB ISM research & developmentDinhobl

THE ACCEPTANCE OF

RED LIGHTS AT LEVELCROSSINGS

Dr Gnter DINHOBLBB-Infrastruktur AG, ISM dept. research&development

Dr Petra LENGGER

preventconsult


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Intro: Level crossings and their challenges


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Intro: Level crossings and their challenges

Since the beginnings of railways:> Level crossings are the places where two unequal transport modes meet:

railway: guided, scheduled and energy-efficient transport with long braking distances

road: unbound, highly flexible and individual transport with short brake distances

> in Austria: ~100 accidents at LX a year (-30% since 2000) with ~20 deaths/yr.

(to compare with road overall: ~35000 accidents/yr., ~550 deaths a yr.)

> the result is a safety challenge!


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aus: Jrgen Pfripfl:Human Factors bei Eisenbahnkreuzungsunfllen: Ein berblick ber internationaleStudienergebnisse;

Prsentation anlsslich BMVIT-Enquete Sicherheit von Eisenbahnkreuzungen, 7. Juli 2008http://www.kfv.at/verkehr-mobilitaet/strassenraum/eisenbahnkreuzungen/

Accidents often caused by road drivers:

(Austrian Road Safety Board)


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aus: Andreas Marlovits:Qualitativ-tiefenpsychologische Wirkungsanalyse zu Eisenbahnkreuzungen;

Prsentation anlsslich BMVIT-Enquete Sicherheit von Eisenbahnkreuzungen, 7. Juli 2008http://www.kfv.at/verkehr-mobilitaet/strassenraum/eisenbahnkreuzungen/

I have seen the red light and I havedriven on. I thought, I will make it.


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aus: Bericht des RechnungshofesSicherheit auf Nebenbahnen, Follow-up-berprfung (2011/03), S. 93

Report of the Austrian Audit Office:within one week more than 1000 times a

half-barrier showing red light was passed,also when the police was present


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Red light is no recommendation Red means Stop!

Initial situation:

nationale and internationale experiences (e.g. ELCF) show, that accidents on LevelCrossings are caused by road drivers between 95-98%

objective:

Examine the acceptance of red light road signal at LX with an empirical survey

results:

shall set up a background-knowledge to optimise the preset time and thereforeto help to reduce abnormal behaviour of road users


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Experimental Setting the framework


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Experimental setting the framework

> commissioned by BB-Infra, in cooperation with preventconsult & AMTC (Austrian cardriver association)

> General concept: computer test with video sequences and stretched waiting time:191-374 sec. instead of 28-319 sec.

> selection of five LX with road signal, one half- and full barrier (videos from both sides)

> 80 persons did the testing, with idependent variables:- sex: 41 of them female- age: from 18-81- licence ownership: e.g. more than 10 years: 69%- frequency of car using: e.g. four to seven times a week: 31%


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> screenshot of standardised information of LX:

contains:

> vehicle type

> map and surrounding of LX

> speed limits

> frequency of road traffic

> frequency of rail traffic

> size of village / town (if applicable)


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> screenshot of drivers view:

> two choices:

1. waiting too long

2. real too long, pass LX

against the regulations

> one testing cycle with

overall 12 LX tests took

around 90 minutes

> four different testing series

to randomize video sequences

> finally: Vienna Risk Readiness Test System TRAFFIC (WRBTV) for general behaviour


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Results the outcome of the red-light-test


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arithmetical mean

Waiting Passing

road signal half barrier full barrier road signal half barrier full barrier

N valid 79 75 79 49 21 19

missing 1 5 1 31 59 61

arithmetical mean 115,7643 141,1956 167,9684 94,3761 148,8571 210,9211

median 117,8571 144,0000 166,0000 108,1429 162,5000 197,0000

standard deviation 33,54989 53,38239 61,98875 57,73349 63,49347 85,10880

min 36,43 28,00 53,50 3,75 17,00 8,00

max 188,43 284,00 330,00 209,00 266,00 331,00

percentile 25 92,0000 106,3333 124,5000 43,2857 93,0000 153,500

percentile 50 117,8571 144,0000 166,0000 108,1429 162,5000 197,0000

percentile 75 136,7143 172,0000 207,5000 143,8750 195,5000 288,0000


> results:


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> road signals:

waiting

LX with road signals

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time [s]

number

arithmetical mean waiting: 117s


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> road signals:

passing

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> half-barrier:

passing

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> full-barrier:

passing

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no significant correlationbeween

waiting time (X) and passing time (Y)

for level crossings withroad signals

> similar results for half- and full-barriers


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Overall (all LX-types):sex: waiting passing

female 126 s 123 s

male 138 s 98 s no significant difference

additional:

> slight tendency to pass earlier for groups

- age 30-39 and 50-59 to pass earlier

- with drivers licence > 10 years to pass earlier

- who drive 4-7 times a week


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additional:> Physiological data shows only tendencies, not significant

skin conductance: tendency to increase

heart rate: decreasesrespiration: tendency to increases


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Comparison: red light observation at LX inBad Fischau by KfV (Austrian Road Safety Board, 2010)

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Experience: feedback of testing persons:higher willingness to pass a level crossing against the regulations

when person has the feeling

> of a good visibility and sighting distance this is sometimes the case whenit is only 50-60 metres!

> less social control, e.g. car standing on the other side of LX, is also a factor not

to pass against the regulations

Finally forthcoming project:

> same testing situation> information provided on LX and trains test after that


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Thank you for your attention!

2 8 01 the Acceptance of Red Lights at LX Presentation[1]

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