CVE 346 Lecture Notes - Lecture 3: Combination Bus, High-Occupancy Vehicle Lane, Toyota Racing Development
5 Jan 2017
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Chapter 3: freeway level of service: definitions, freeway: a highway with divided traffic in each direction, two or more lanes each way, exclusive use and full control of access. Operations extremely volatile; any disruption causes queuing: los f: breakdown in flow; queues form behind breakdown points, freeway segment los determination. Intelligent transportation system features: capacity-enhancing effects of ramp metering, procedure for calculating los, step 1: input data required: geometric data, free flow speed (ffs), and demand volume (v). Compute volume adjustment using the peak hour factor, number of lanes in one direction, driver population adjustment, and percentages of heavy vehicles. Where phf is the peak hour factor, v is the hourly volume and v15 is the peak 15 minute count. 3 where pt is the decimal percent of trucks, pr is the decimal percent of rvs, et is the passenger car equivalent of one truck/bus, and er is the passenger car equivalent of one rv (all found using tables)
