INTRODUCTION In recent years,Houston has made great strides in green building,moving into the top ten nationally on both LEED certified and Energy Star rated structures.At the same time,fewer steps have been taken to ...INTRODUCTION In recent years,Houston has made great strides in green building,moving into the top ten nationally on both LEED certified and Energy Star rated structures.At the same time,fewer steps have been taken to address transportation,which accounts for one third of U.S.greenhouse gas emissions.3 To achieve greater sustainability,architects,planners,and developers must take the space between buildings into greater account.展开更多
This research assessed the impact of efficiently expanding the biking network in Atlanta,Georgia,using dedicated lanes for bicycles.A total of three different conditions,i.e.,exist-ing,proposed(by the authors),and alt...This research assessed the impact of efficiently expanding the biking network in Atlanta,Georgia,using dedicated lanes for bicycles.A total of three different conditions,i.e.,exist-ing,proposed(by the authors),and alternative(suggested by the City of Atlanta)condi-tions,were modeled to see the effectiveness of bike infrastructure design improvement and expansion.Trajectory data collected from the VISSIM simulation model were used in the Federal Highway Administration(FHWA)’s surrogate safety assessment model(SSAM)to analyze the safety effect on the bike infrastructure improvement and expansion.Based on the results,both the proposed and alternative conditions resulted in safer travel through the network during the peak hour period without any apparent deterioration in delays.For instance,compared to the existing condition,the average stop delays decreased from 190 s to 164 s for the proposed and the alternative conditions.These findings showed that the introduction of bicycle lanes and narrower lanes for automobiles may not adversely affect the peak hour congestion.Also,fewer conflicts were observed in the sim-ulated network of proposed and alternative conditions compared to existing conditions.Conflicts involving bicyclists were also reduced since the bicyclists can use their own lanes and do not have to interact with automobile traffic in the sharrows.展开更多
Low-carbon endeavors don’t sacrifice economic growth Plant-covered buildings,benches made from paper packaging,solar and windpowered street lamps and roads equipped with water collection and filtration systems—all t...Low-carbon endeavors don’t sacrifice economic growth Plant-covered buildings,benches made from paper packaging,solar and windpowered street lamps and roads equipped with water collection and filtration systems—all these novelties together make up an intriguing scene in the Shenzhen International Low-Carbon City, the first experimental eco- community of its kind in China.展开更多
文摘INTRODUCTION In recent years,Houston has made great strides in green building,moving into the top ten nationally on both LEED certified and Energy Star rated structures.At the same time,fewer steps have been taken to address transportation,which accounts for one third of U.S.greenhouse gas emissions.3 To achieve greater sustainability,architects,planners,and developers must take the space between buildings into greater account.
文摘This research assessed the impact of efficiently expanding the biking network in Atlanta,Georgia,using dedicated lanes for bicycles.A total of three different conditions,i.e.,exist-ing,proposed(by the authors),and alternative(suggested by the City of Atlanta)condi-tions,were modeled to see the effectiveness of bike infrastructure design improvement and expansion.Trajectory data collected from the VISSIM simulation model were used in the Federal Highway Administration(FHWA)’s surrogate safety assessment model(SSAM)to analyze the safety effect on the bike infrastructure improvement and expansion.Based on the results,both the proposed and alternative conditions resulted in safer travel through the network during the peak hour period without any apparent deterioration in delays.For instance,compared to the existing condition,the average stop delays decreased from 190 s to 164 s for the proposed and the alternative conditions.These findings showed that the introduction of bicycle lanes and narrower lanes for automobiles may not adversely affect the peak hour congestion.Also,fewer conflicts were observed in the sim-ulated network of proposed and alternative conditions compared to existing conditions.Conflicts involving bicyclists were also reduced since the bicyclists can use their own lanes and do not have to interact with automobile traffic in the sharrows.
文摘Low-carbon endeavors don’t sacrifice economic growth Plant-covered buildings,benches made from paper packaging,solar and windpowered street lamps and roads equipped with water collection and filtration systems—all these novelties together make up an intriguing scene in the Shenzhen International Low-Carbon City, the first experimental eco- community of its kind in China.
