城市核心区设计:新加坡的亚洲经验

通过对中心区城市设计政策和建议的分析,讨论了在一个特定的历史脉络下,一个东亚现代城市其城市核心区如何转型、如何预见其未来、如何面对全球竞争以及如何走向可持续发展目标的城市发展模式。     

浅析景观大道的设计

结合景观大道的设计理念,归纳了在景观大道设计中存在的误区,提出了在设计过程中应遵循生态性原则、节点特征化原则,从而实现合理的景观设计,发挥道路生态功能,提高城市绿化水平。     

民国公共空间的政治利用——南京中山路建造始末

1928～1937年间,国民政府锐意改造首都南京。当时,新建的林荫大道系统成为南京最主要的公共空间。以中山路的建造为例,阐述民国规划林荫大道的政治目的,探讨国民政府如何利用公共空间,作为展示国家势力的场所。并且指出国民政府通过在城市最主要的公共空间进行政治活动,使人们无可避免地参与其中,达到国家民族建构的目的。     

Cyclist safety on bicycle boulevards and parallel arterial routes in Berkeley,California

This study compares the safety of bicyclists riding on bicycle boulevards to those riding on parallel arterial routes in Berkeley, California. Literature on the impact of motor vehicle traffic characteristics on cyclist safety shows that high motor vehicle speeds and volumes and the presence of heavy vehicles are all detrimental to cyclist safety. This suggests that cyclists may be safer on side streets than on busy arterials. Bicycle boulevards—traffic-calmed side streets signed and improved for cyclist use—purport to offer cyclists a safer alternative to riding on arterials. Police-reported bicycle collision data and manually collected cyclist count data from bicycle boulevards and parallel arterial routes in Berkeley, California from 2003 to 2010 are used to test the hypothesis that Berkeley's bicycle boulevards have lower cyclist collision rates and a lower proportion of bicycle collisions resulting in severe injury. While no significant difference is found in the proportion of collisions that are severe, results show that collision rates on Berkeley's bicycle boulevards are two to eight times lower than those on parallel, adjacent arterial routes. The difference in collision rate is highly statistically significant, unlikely to be caused by any bias in the collision and count data, and cannot be easily explained away by self-selection or safety in numbers. Though the used dataset is limited and the study design is correlational, this study provides some evidence that Berkeley's bicycle boulevards are safer for cyclists than its parallel arterial routes. The results may be suggestive that, more generally, properly implemented bicycle boulevards can provide cyclists with a safer alternative to riding on arterials.