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Outline
To investigate the influence of different traffic flow conditions on vehicle driving characteristics and urban road testing, a statistical analysis is conducted on dynamic parameters such as vehicle speed, gear position, throttle opening, accelerator pedal speed, brake master cylinder pressure, braking frequency, and steering wheel angle, based on real vehicle CAN bus data collected during peak and off-peak hours. The results show that during peak hours, vehicles operate for extended periods at low speeds and in low gears, with significantly higher frequencies of start-stop transitions, accelerating and braking operations, and more frequent activations of driver assistance systems. In contrast, during off-peak hours, vehicles predominantly operate at medium to high speeds and in medium to high gears, with relatively higher power loads and smoother operational stability. The high-frequency, high-load conditions during peak hours are more suitable for verifying the reliability and durability of the vehicle powertrain, braking system, and driver assistance functions in congested environments, while off-peak hours are more conducive to evaluating the overall performance of vehicles under medium-to high-speed conditions.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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