Question 2: Traffic data has been collected by students at two sections, xx and yy, of a high way500 m apart. Observations at xx show that six vehicles passed that section at intervals of 10, 6,7, 7, and 5 seconds, respectively. If the speeds of the vehicles were found to be 50, 45, 45, 40, 35,and 40 km/h, respectively.Y500 mY1. Draw a schematic showing the locations of the vehicles 36 s after the first vehicle passedsection xx.2. Determine the time mean speed.3. Determine the space mean speed4. Estimate the rate of flow on the highway

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and 40 km/h, respectively. 500 m 1. Draw a schematic showing the locations of the vehicles 36 s after the first vehicle passed section xx. 2. Determine the time mean speed. 3. Determine the space mean speed

and 40 km/h, respectively. 500 m 1. Draw a schematic showing the locations of the vehicles 36 s after the first vehicle passed section xx. 2. Determine the time mean speed. 3. Determine the space mean speed

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter6: Fundamental Principles Of Traffic Flow

Section: Chapter Questions

Problem 5P

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Capacity and Level of Service at Intersections

The term capacity is associated with transportation engineering. Capacity helps to understand how many pedestrians or vehicles can be handled by a transport facility. Level of service is also a term associated with transportation engineering. The level of service indicates the performance of the transport facility.

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Two sets of students are collecting traffic data at two sections, xx and yy, of a highway 500 metre apart. Observations at xx show that five vehicles passed that section at intervals of 3, 4, 3, and 5 secs, respectively. If the speeds of the vehicles were 50, 45, 40, 35, and 30 km/hr., respectively, draw a schematic showing the locations of the vehicles 20 sec after the first vehicle passed section xx. Also determine (a) the time mean speed, (b) the space mean speed, and (c) the density on the highway.
Two sets of students are collecting traffic data at two sections, xx and yy, of a highway 1,200 ft apart. Observations at xx show that five vehicles passed that section at intervals of 3, 4, 3, and 5 sec, respectively. If the speeds of the vehicles were 55, 50, 45, 40, and 35 mi/h, respectively, determine the space mean speed (in km/h) for the data using the following equation where ut and us are in km/h. (Round your answer to at least three significant figures.) ut = 0.966us + (3.541 km/h) km/h Determine the space mean speed (in km/h) for the data using the following equation. (Round your answer to at least three significant figures.) us = n n 1 ui i=1 km/h Compare your answers and discuss the results.
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