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Glossary of Data Variables for Fatal and accident causation ... - ERSO

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Manual <strong>for</strong> SafetyNet <strong>accident</strong> <strong>causation</strong> system (SNACS) - Appendices<br />

was it special/different in<br />

any way<br />

• Available time<br />

•<br />

• Type <strong>of</strong> traffic environment<br />

• On what kind <strong>of</strong> road did<br />

the impact occur (urban<br />

road, country road, other)<br />

• Speed<br />

• What speed were you<br />

going at<br />

• What speed do you usually<br />

go at on this spot<br />

• What speed does other<br />

road users usually go at on<br />

• Number <strong>of</strong> concurrent activities<br />

•<br />

• Was there anyone else in the<br />

car<br />

• If there was, were you having a<br />

conversation<br />

• What type <strong>of</strong> conversation was it<br />

(explaining, discussing, joking,<br />

gossiping, work related…) <br />

• What was the mood like in the car<br />

<br />

• Was the radio or CD/tape player<br />

on<br />

• Similar <strong>accident</strong>s/Situations<br />

• Have you experienced any<br />

similar situations be<strong>for</strong>e<br />

• What happened then<br />

• Have you been in a<br />

situation similar to this one,<br />

but where you didn’t<br />

actually collide<br />

• What happened then<br />

• What was the difference<br />

between these situations<br />

• Design <strong>of</strong> traffic<br />

environment<br />

•<br />

• Important factors<br />

• Is there anything in the<br />

traffic environment at the<br />

scene which makes driving<br />

particularly easy or<br />

particularly complicated<br />

What about visibility, lane<br />

markings, exits, etc<br />

• Complexity<br />

• Do you think the traffic<br />

• Driver’s familiarity with<br />

traffic environment<br />

• Do you live nearby<br />

• Do you <strong>of</strong>ten drive this<br />

route<br />

• Has anything been<br />

recently changed/ rebuilt<br />

on the spot<br />

• If so, did you find it an<br />

improvement or not<br />

• If you <strong>of</strong>ten drive there,<br />

can you tell what other<br />

kinds <strong>of</strong> road users usually<br />

drive there (commuters,<br />

tourists, locals)<br />

• Driver’s familiarity with the<br />

vehicle<br />

• For how long have you<br />

had the car<br />

• How much have you<br />

driven it<br />

• Do you feel like you know<br />

the car<br />

• Does it ever behave<br />

unexpectedly<br />

• Do you find it hard or easy<br />

to drive<br />

• Drivers education<br />

(procedures/ regulations,<br />

special vehicles)<br />

• Do you have any driving<br />

Page 191 <strong>of</strong> 215

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