E-c014: Traffic Analysis Software Tools (ec014. pdf)
Download 284.29 Kb. Pdf ko'rish
|
3- maruzagadb
HCS-Arterials
HCS-Arterials implements the procedures in Chapter 11 of the HCM. HCS-Arterials allows users to perform both operational and planning analyses. For example, in the case of an operational problem, the analysis determines the arterial LOS by investigating the effects of signal spacing, arterial classification, and traffic flow. The analysis method uses the HCM signalized intersection procedure for the lane groups containing thru traffic. Basic data required for the operational analysis include separation distance and free- flow speed between intersections; artery class for principal and minor arteries, such as urban, intermediate, and suburban (defined in Table 11-2 of the HCM); intersection cycle length; phase sequence; signal timing; and arrival type. HCS-Arterials results are presented on a section-by-section basis and include intersection total delay, running time, arterial speed, and arterial level of service. The LOS is based on the average travel speed and the arterial classification. The HCS-Arterials planning method determines the LOS for a given average annual daily traffic (AADT) value and can also suggest a maximum AADT for a given LOS. The planning method uses the same methodology as the operational analysis, but the arterial LOS is determined using default parameter values for signalized intersections. Data required for the planning analysis include AADT, desired LOS, design-hour factor (K), directional distribution factor, peak hour factor, adjusted saturation flow rate, percent turns from exclusive lanes, number of thru lanes, artery classification, median condition, free-flow speed, section length, number of signalized intersections in the analysis, arrival type for traffic, and signal-related data similar to the operations analysis. Results include projected two-way hourly volumes, running time, average travel speed, and arterial LOS. Download 284.29 Kb. Do'stlaringiz bilan baham: |
Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©fayllar.org 2024
ma'muriyatiga murojaat qiling
ma'muriyatiga murojaat qiling