Research Article
Spatialtemporal Characteristics of Tunnel Traffic Accidents in China from 2001 to Present
Table 3
Influence weight of objective factors on casualties.
| | Accident cause (Pi) | Overspeeding | Icy pavement | Front vehicles stop | Vehicle fault | Tunnel collapse | Pavement debris | Others |
| | Ki | 1.34 | 1.27 | 0.61 | 0.34 | 0.23 | 0.35 | 0.64 | | Accident type (Pi) | Rear end accident | Collision tunnel wall | Rollover | Fire | Others | — | — | | Ki | 1.24 | 0.82 | 0.501 | 0.12 | 0.11 | — | — | | Vehicle type (Pi) | Minibus | Minivan | Motorbus | Large truck | — | — | — | | Ki | 0.64 | 0.34 | 1.12 | 1.25 | — | — | — | | Tunnel length (Pi) | Short tunnel | Medium tunnel | Long tunnel | Super-long tunnel | — | — | — | | Ki | 0.56 | 0.42 | 0.82 | 1.38 | — | — | — | | Tunnel section (Pi) | Section 1 | Section 2 | Section 3 | — | — | — | — | | Ki | 1.98 | 1.02 | 0.31 | — | — | — | — | | Accident month (Pi) | January | February | March | April | May | June | July | | Ki | 0.56 | 0.43 | 0.217 | 0.41 | 0.31 | 0.176 | 0.44 | | Accident month (Pi) | August | September | October | November | December | — | — | | Ki | 0.18 | 0.25 | 0.18 | 0.09 | 0.06 | — | — | | Accident week (Pi) | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday | | Ki | 0.13 | 0.18 | 0.24 | 0.19 | 0.26 | 0.42 | 0.39 | | Accident time (Pi) | 0:00∼2:00 | 3:00∼4:00 | 5:00∼6:00 | 7:00∼8:00 | 9:00∼10:00 | 11:00∼12:00 | 13:00∼14:00 | | Ki | 0.250 | 0.125 | 0.283 | 0.308 | 0.583 | 0.485 | 0.328 | | Accident time (Pi) | 15:00∼16:00 | 17:00∼18:00 | 19:00∼20:00 | 21:00∼22:00 | 23:00∼24:00 | — | — | | Ki | 0.342 | 0.500 | 0.292 | 0.158 | 0.183 | — | — |
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