China
Africa
Explore chapters and articles related to this topic
Economic analysis of mobility improvements
Published in Zongzhi Li, Transportation Asset Management, 2018
Selecting the type of lane and its design and operating rules should depend upon the primary goals for the lane—such as maintaining free-flow speed, maximizing person-moving capacity, maximizing vehicle throughput, revenue needs, freight-moving capacity, and so on. Managed lanes can boost the efficiency of both the current transportation network and any new or alternative network, such as dedicated transit or freight traffic facilities. Given the variety of managed lane strategies, and because no two facilities are alike, there is no single set of guidelines that can be applied across all circumstances. However, several planning, design, and operational factors should be considered: (i) the type of managed lane should be chosen to support the regional transportation vision and the goals for the specific corridor; (ii) the physical and operational characteristics of the corridor are vital in the development of managed lanes; and (iii) managed lanes are intended to promote a more efficient utilization of the existing system capacity.
Leveraging existing high-occupancy vehicle lanes for mixed-autonomy traffic management with emerging connected automated vehicle applications
Published in Transportmetrica A: Transport Science, 2020
Based on the previous simulation studies in a single managed lane, the bundled application of these three aforementioned CAV applications can further improve the traffic performance with existing highway facilities as compared with using individual CAV application (Ma et al. 2018). These vehicle connectivity and automation technologies could allow consistent speeds to be maintained throughout the facility, thereby increasing the traffic demand levels that the roadway can support. The increased throughput and capacity of the managed lanes could also potentially benefit parallel general-purpose lanes as traffic shifts to the managed lane. Smoothed, optimized speeds would also create a reduction in fuel consumption, harmful emissions, and highway crashes.