List of top Infrastructure Planning Questions on Traffic survey methods, Traffic flow Analysis

A four-arm uncontrolled un-signaled urban intersection of both-way traffic is illustrated in the figure. Vehicles approaching the intersection from the directions A, B, C, and D can move to either left, right, or continue in straight direction. No U-turn is allowed. In the given situation, the maximum number of vehicular crossing conflict points for this intersection is _________ (answer in integer)


 

The spot speeds (in km/h) of eight vehicles in a traffic stream are 42, 52, 56, X, 53, 62, 65, and 48. X is the spot speed of the fourth vehicle. The Time Mean Speed of the traffic stream is 56.25 km/h. After determining the value of X, the calculated Space Mean Speed of the traffic stream is _________ km/h. (rounded off to two decimal places)
Which of the following methods is/are used in traffic survey to measure the Running Speed and Journey Speed?
Match the items in Group-I with their corresponding items in Group–II
Group IGroup II
(P)   Floating floor  (1) Overflow control
(Q)    Float valve (2) Delay not affecting a project
(R)    Metal float (3) Acoustical buffer 
(S)    Free float (4) Plastering equipment
 (5) Traffic flow control 

A vehicle count survey (in Passenger Car Unit) is conducted on a mid-block section of a road at regular intervals of 15 minutes from 8:00 AM to 10:00 AM. Based on the data given in Table below, the Peak Hour Factor (rounded off to two decimal places) for the given survey duration is \(\underline{\hspace{2cm}}\). 
 

The measured spot speeds (in km/h) of 10 vehicles from a traffic stream are 45, 35, 25, 51, 45, 38, 61, 42, 47, and 49. The Time Mean Speed of the traffic stream (in km/h, rounded off to one decimal place) is \(\underline{\hspace{2cm}}\).