H,W.: Spot speed data were collected on a highway with three lanes for a period of 60 minutes. All vehicles in lane 1 are traveling at 45 mi/h, all vehicles in lane 2 are traveling at 60 mi/h, and all vehicles in lane 3 are traveling at 75 mi/h. If there is a constant spacing of 0.5mile between vehicles at all lanes. What will be the time mean speed and space mean speed for the traffic stream at that highway?

H,W.: Spot speed data were collected on a highway with three lanes for a period of 60 minutes. All vehicles in lane 1 are traveling at 45 mi/h, all vehicles in lane 2 are traveling at 60 mi/h, and all vehicles in lane 3 are traveling at 75 mi/h. If there is a constant spacing of 0.5mile between vehicles at all lanes. What will be the time mean speed and space mean speed for the traffic stream at that highway?

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 4P

See similar textbooks

Similar questions

Assume you are an observer standing at a point along a three‐lane roadway. All vehicles in lane 1 are traveling at 30 mi/hr, all vehicles in lane 2 are traveling at 45 mi/hr, and all vehicles in lane 3 are traveling at 60 mi/hr. The spacing between vehicles in each lane is 0.5 mile. If you collect spot speed data for all vehicles as they cross your observation point for 2 hours, what will be the time‐mean speed and space‐mean speed for this traffic stream?
Assume you are an observer standing at a point on a three lane race track. All vehicles in lane 1 are traveling at 50 mi/h, all vehicles in lane 2 are traveling at 65 mi/h, and all vehicles in lane 3 are traveling at 70 mi/h. There is a constant spacing of 0.25 mile. If you collect spot speed data for all vehicles that pass your observation point in one hour, what will the time-mean speed be for the traffic stream?
Assume you are an observer standing at a point along a three lane roadway. All vehicles in lane 1 are traveling at 50 km/h, all vehicles in lane 2 are traveling at 75 km/h, and all vehicles in lane 3 are traveling at 100 km/h. There is also a constant spacing of 0.8 kilometer between vehicles. If you collect spot speed data for all vehicles as they cross your observation point, for 30 minutes, what will be the time mean speed and space mean speed for this traffic stream?
Assume you are an observer standing at a point along a three-lane roadway. All vehicles in lane 1 are traveling at 30 mi/h, all vehicles in lane 2 are traveling at 45 mi/h, and all vehicles in lane 3 are traveling at 60 mi/h. There is also a constant spacing of 0.5 milebetween vehicles. If you collect spot speed data for all vehicles as they cross your observation point, for 30 minutes, what will be the time-mean speed and space meanspeed for this traffic stream?
Imagine you are recording speed at a point along a three-laneroadway. All vehicles in lane 1 are traveling at 60 mi/h, all vehicles in lane 2 are traveling at 30 mi/h, and all vehicles in lane 3 are traveling at 45 mi/h. There is also a constant spacing of 3168 ft. between vehicles. If you collect spot speed data for all vehicles as they cross your observation point, for 60 minutes, what will be the time-mean speed and space mean speed for this traffic stream?
5. Vehicle time headways and spacings were measured at a point along a highway, from a single lane over the course of an hour. The average values were calculated as 2.5 sec/veh for headway and 200 ft/veh for spacing. What was the average speed? [54.4 mph]
The speeds of 10 vehicles were measured at the midpoint of a (4.04-kilometer section of roadway. Vehicles The speeds of 10 vehicles were recorded: Assuming all vehicles were traveling at constant speed over this roadway section, calculate: a. Time-mean speed in kph b. Space-mean speed in kph c. Traffic Density in veh/km 1st 2nd 3rd 4th 5th Speed (kph) 42.3 54.2 68.8 35.8 48.6 Vehicles 6th 7th 8th 9th 10th Speed (kph) 78.5 96.1 41.5 28.4 36.2
The following data were taken on five vehicles travelling consecutively 1.5 km portion of the NLEX. Vehicle Time (minute) 1 1.2 1.0 3 1.4 4 1.3 1.1 Determine the time mean speed (kph) 76.07 75.00 O 76.00 O 75.07 2.
Spot speed study has been carried out on a highway and collected data is shown in the table below. Speed range (kmph) No. of vehicles observed 0-10 10 10-20 13 20-30 15 30-40 12 40-50 16 Determine the design speed for checking the geometric design of the highway.
It was determined through a survey that the rate of vehicles crossing a point on a highway is 400 veh/h. Calculate the probability of 5 vehicles arriving at an interval of 60 sec.
Question 1 The table below shows twelve spot speed values measured at a specific point on an urban highway. 3 4 5 6 7 8 9 1 2 10 11 12 78.1 80.9 79.1 72.8 80.4 80.2 85.1 71.5 75.7 81.9 79.5 74.4 Vehicle # Speed (km/h) a) Calculate the Time Mean Speed and the Space Mean Speed of the twelve vehicles. b) Using the values calculated in the previous question, validate the two equations proposed by Wardrop in 1952.
A flow characteristic that is related to the density and obtained from speed data is occupancy. Data obtained from a 6-ft by 6-ft inductive loop detector is used to determine the traffic density. With an occupancy of 9.375%, determine the density, in vehicles per mile, for a mean vehicle length of 27 feet.