Research Article
Analysis of Freeway Secondary Crashes in Different Traffic Flow States by Three-Phase Traffic Theory
Table 2
The summary of different crash types in different traffic flow states.
| | Traffic flow states | Normal crash | Primary crash | Secondary crash | Total |
| | F | 7584 | 50 | 27 | 7661 | | S | 825 | 14 | 16 | 855 | | J | 273 | 4 | 15 | 292 | | F⟶S | 367 | 8 | 10 | 385 | | S⟶F | 336 | 8 | 10 | 354 | | S⟶J | 195 | 10 | 11 | 216 | | J⟶S | 145 | 3 | 8 | 156 | | Total | 9725 | 97 | 97 | 9919 |
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