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1 sty 2009 · The relationships between design speed, operating speed, and posted speed limits are important considerations in the geometric design of highways and streets. Highway designers establish geometric design criteria by using a designated design speed.
1 gru 2013 · Per the Manual on Uniform Traffic Control Devices, posted speed limits are set to assist drivers in choosing a safe travel speed. Variable speed limit systems, which also manage speeds, have been used in work zones [ 7 , 8 ] and freeway traffic management [ 9 , 10 ].
14 lip 2014 · By analysis of the influence factors of the interchange ramp running speed, this paper formulates the orthogonal experiment, and collects 14 ramps, in total of 147 groups of the running speed as the samples, and then analyzes the characteristics of the running speed of the vehicles on interchange ramp.
1 lip 2021 · Abstract. For road alignment design, the design speed is the control basis of the current road design and determines the minimum index value of the route alignment design elements. The actual driving speed is important to measure and check the rationality of the route design index and whether the coordination is appropriate.
6 lut 2011 · This paper presents the application of GPS in collecting travel time, speed, and delay information on 64 major roads throughout the State of Delaware. A comparative statistical analysis was ...
4 maj 2011 · This research aims to discover engineers' perceptions about the impacts of higher design speed and whether higher design speeds really provide better highway geometry and performances. To this end, several tasks including a mail survey, a comparison of the pre and post data on geometric features, and a performance analysis on several upgraded ...
30 lis 2016 · The highway capacity manual (HCM) is the publication used most often to estimate capacity. Field measurements in previous research have shown that the capacities at several freeway bottlenecks are noticeably lower than the values recommended in the HCM (highway capacity manual), by an order of a few hundred vehicles per lane.
