The system phase that typically follows the Needs Assessment Phase
What is The Planning Phase
100
The speed of individual vehicles collected at a given location using technology such as radar guns
What is spot speed
100
This is equal to speed x density
What is Flow?
100
This data you collect directly
What is primary data?
100
(T/F) The first step in determining LOS is calculating free-flow speed
What is False?
200
This phase deals with the day-to-day use of the civil engineering system
What is Operations Phase
200
The distance traveled by all vehicles divided by the total travel time
What is Space Mean Speed
200
This is how you define gap
What is Headway minus Vehicle Length
200
The peak hour factor if the fifteen minute traffic counts were 250, 750, 600, 400
What is 2/3?
200
The level of service if the demand volume is greater than capacity
What is LOS F
300
Robotic "painters" assist Akashi-Kaikyo Bridge managers during this phase
What is the Preservation Phase
300
The average spot speed of all vehicles for a given period of time.
What is Time Mean Speed
300
The occupancy rate if a vehicle is on top of a sensor for 12 second every minute.
What is 20%
300
If the estimated sample standard deviation is larger for sample A compared to sample B then the minimum number of measured speeds (N) will be greater for which sample?
What is Sample A?
300
The free flow speed (FFS) of a facility with three 12' lanes, more than 6' later clearance, and no ramps within 2 miles up stream or down stream
What is 75.4 mph = 75 mph?
400
The Tacoma Narrows Bridge ultimately failing due to high winds is an example of this phase.
What is the End-of-Life Phase?
400
(T/F) Time mean speed is always greater than or equal to space mean speed.
What is True?
400
The headway in ft/veh if there is a 5 second headway between vehicles traveling 80fps.
What is what is 400 ft/veh.
400
What is the equation to determine the probability that more than 2 vehicles arrive during a given time period (assume a Poisson process)
What is 1 - P(0) - P(1) - p (2)
400
The population adjustment factor value for a traffic stream comprised primarily of weekday traffic or commuters.
What is 1.0?
500
The open lattice work used to stiffen the Verrazano-Narrows Bridge deck ensuring that force from high winds would not cause the bridge to fail was conceived during this phase.
What is the Design Phase?
500
The time mean speed if six vehicles were measured traveling 60, 65, 70, 55, 50, and 60mph.
What is 60 mph.
500
The conversion factor to go from mph to fps
What is 1.47 or 5280/3600
500
The speed determine from greenshield's curves if the free-flow speed was 70mph, the density was 1100 v/hr/ln, and the jam density was 2200 v/hr/ln.
What is 35mph?
500
This is calculated using the percent of heavy vehicles and passenger car equivalents.