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在重庆市主城区内选择多条具有代表性的上坡路段为对象并划分测试断面,采集了行驶速度值,结果表明:(1)大型车在上坡路段的速度变化有4种模式,上坡时的速度在总体上是下降的,但在一些驾驶模式中出现了坡底和坡顶的冲坡加速行为;(2)公交车在上坡路段的速度均值最低、货车居中,大客车最高,三种车型的稳定爬坡速度为25~35km/h;(3)在直坡路段,大型车和小客车的夜间行驶速度高于日间,并且速度在各观测断面的分布比较离散,而弯坡组合路段各断面的速度观测值更集中,并且维持在一个较低的幅值;(4)不管是日间还是夜间,小客车在上坡路段的行驶速度明显高于大型车,两者之间的平均速度差值约为12km/h,夜间大型车和小客车的速度差与日间相比并未见明显不同。
In the main urban area of Chongqing, several representative uphill sections were selected as objects and the test sections were divided. The traveling speed values were collected. The results showed that: (1) There were four modes for the speed changes of large vehicles in uphill section, (2) the average speed of bus in the uphill section is the lowest, the middle of the truck is middle, the bus is the highest, and the third is the bus The steady climbing speed of the model is 25 ~ 35km / h. (3) In the straight road section, the night driving speed of the large car and the passenger car is higher than that of the daytime, and the distribution of the speed in each observation section is relatively discrete. (4) Whether the daytime or the nighttime, the passenger car travels on the uphill section obviously faster than the large car, and the average between the two The difference in speed is about 12 km / h, and the difference in speed between large cars and minivans at night is not significantly different from that during the day.