Development of Risk-Situation Scenario for Autonomous Vehicles on Expressway Using Topic Modeling
Table 14
Representative risk-situation scenario.
Factor
Group
Illustration
Accident
Vehicle factor
1
A stopped vehicle (L3) in the shoulder when driving on the main lane (L2) which is flat (L1), straight (L1), and dry (L3) in non-working section (L3) at night (L5) on a cloudy day (L5). Vehicle-vehicle accident (L4) involving side collision (L4) into a stopped vehicle (L3) owing to tire damage
2
When driving through normal traffic (L3) on the main lane (L2) which is dry (L3), flat (L1), straight (L1), and has a certain fill height (L1) during daytime (L5) on a sunny day (L5). Vehicle-vehicle accident (L4) involving rear-end collision (L3) of a secondary vehicle after a single accident (L4) caused by vehicle part problem (L3)
3
A stopped vehicle (L3) in the shoulder when driving on the main lane (L2) which has right-curve (L1), downhill (L1), has a certain cut part (L1), and dry (L3) at night (L5) on a sunny day (L5). Vehicle-structure collision (L4) of a single accident (L4) owing to overactive handling (L4) caused by vehicle part problem (L3)
4
A stopped vehicle (L3) in the shoulder when driving on the main lane (L2) which is straight (L1), uphill (L1), has a certain fill height (L1), and dry (L3) at night (L5) on a rainy day (L5). Collision by a secondary vehicle after a single accident (L4) caused by tire damage (L3)
OthersFactor
1
When driving through normal traffic (L3) on the main lane (L2) which is wet (L3), uphill (L1), straight (L1), and has a certain fill height (L1), and has a certain fill height (L1) at night (L5) on a cloudy day (L5)
Vehicle-vehicle accident (L4) of a head-on collision (L4) with a nearby vehicle owing to poor loading (L3)
2
When driving (L4) on the main lane (L2) which has left-curve (L1) and is uphill (L1) and flat (L1) in non-working section (L3) during daytime (L5) on a rainy day (L5)
Collision by a secondary vehicle after a side collision (L4) caused by object on roads (L3)
3
When driving (L4) through normal traffic (L3) on the main lane (L3) which is dry (L3), uphill (L1), straight (L1), and has a cut part (L1) during daytime (L5) on a sunny day (L5)
Vehicle-structure accident (L4) caused by poor loading (L3)
4
Congestion (L3) when driving on the main lane (L2) which is straight (L1), flat (L1), downhill (L1), and dry (L3) during daytime (L5) on a sunny day (L5)
Head-on collision (L4) into another vehicle owing to overactive handling (L4) caused by poor loading (L3)
