Evaluating the impacts of grades on vehicular speeds on interstate highways.

ABSTRACT: Grade variation on interstate highways affects the roadway geometric design, vehicle performance and driver behavior, thus possibly exerting an unexpected effect on vehicular speed. Hence, determining the internal relationship between grade and speed is important and useful for drivers, traffic regulators and other traffic participants. However, the problem with performing this research is the lack of large-scale gradient and speed data. Google Earth (GE) provides an application programming interface for extracting elevation data worldwide. The elevation dataset from GE can be easily converted to grade data. In addition, our team has collected and stored speed series data for different freeways over several years. Based on the above obtainable grade and speed datasets, we conducted researc

SUBMITTER: Chen X 

PROVIDER: S-EPMC5581186 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature