Research Article
Threshold Research on Highway Length under Typical Landscape Patterns Based on Drivers’ Physiological Performance
Table 2
Descriptive statistics of key indices.
| Landscape pattern | Vehicle’s performance | ECG indices | SPEED mean (km/h) | LD mean (m) | HR mean (beat/min) | LF/HF mean |
| Open | | | | | Semiopen | | | | | Vertical | | | | |
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