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Research Reports
Filter by Author4 report(s) found for Ziqi Song 1 - 4 of 4 Highway project selection and scheduling are traditionally treated as two separate problems in the literature. It is critical to investigate how to select and schedule M&R projects in a way that can maximize their benefit or effectiveness while minimizing the traffic impacts of work zones across project... Battery electric buses with zero tailpipe emissions have great potential to improve environmental sustainability and livability of urban areas. However, the problems of high cost and limited range associated with on-board batteries have substantially limited popularity of battery electric buses. The... As the population grows and travel demands increase, alternative interchange designs have become increasingly popular. The diverging diamond interchange is an alternative design that has been implemented in the United States. This design can accommodate higher and unbalanced flow and improve safety at... Highway assets, including traffic signs, traffic signals, light poles, and guardrails, are important components of transportation networks. They guide, warn, and protect drivers and regulate traffic. To manage and maintain the regular operation of the highway system, state departments of transportation... |
