Bicycle rolling resistance measurements and video recordings under winter conditions in Trondheim 2019

Hypothesis: Cycling comfort under winter conditions correlates with bicycle rolling resistance; bicycle rolling resistance depends on performed winter maintenance; to maintain or increase the share of people bicycling in the winter, the rolling resistance level must be kept below a critical limit. The data was collected using an instrumented bicycle with sensors measuring speed, road slope, pedaling power and air speed. Dataset describing cycleway conditions and propulsive/resistive forces under winter cycling during the winter of 2019 in Trondheim, Norway. The dataset includes raw data from rolling resistance measurements, documented road conditions and video recording of the test sessions. The road condition data contains details about the snow depth and type, and objective perceived cycling comfort in addition to some location identifying information. The most important data in the propulsive/resistive forces files are speed, pedaling power, air speed, air density and road slope. The air drag coefficient was determined in an isolated wind tunnel test, as well as in an outdoor field test.研究假设：冬季骑行舒适度与自行车滚动阻力呈显著相关；自行车滚动阻力取决于冬季维护作业开展情况；若要维持或提升冬季骑行人群的占比，需将滚动阻力水平控制在临界阈值以下。 本数据集的数据通过搭载传感设备的仪表化测试自行车采集，该车辆配备可测量车速、道路坡度、蹬踏功率与气流速度的传感器。本数据集记录了2019年冬季挪威特隆赫姆地区冬季骑行场景下的自行车道状况与推进/阻力受力数据。 数据集包含滚动阻力测量原始数据、记录在册的道路状况信息，以及测试全程的视频录像。道路状况数据涵盖雪深、雪型细节、经客观评定的骑行舒适度，以及部分位置标识信息。 推进/阻力受力文件中的核心数据包括车速、蹬踏功率、气流速度、空气密度与道路坡度。空气阻力系数分别通过封闭式风洞测试与室外场地测试完成标定。