Equations and Notations
Transportation Systems
Geometric Design &
Standards
Traffic Flow & Capacity
Transportation Planning
100
The units of density (k)
What are vpm?
100
This public mode operates on fixed routes and is funded by the government
What is mass transit?
100
This is the manual that contains the standards for highway design
What is the AASHTO Greenbook?
100
This is the manual used to install and maintain traffic control devices on all public streets
What is the MUTCD?
100
The three components of a transportation network
What are nodes, centroids, and links?
200
The three main points used to plot a horizontal curve
What are PI, PC, and PT?
200
This highway functional class provides a balance between access and mobility
What are collectors?
200
This is the sign we should use on the G variable in the braking distance equation if we have a downgrade
What is negative?
200
This is the reason why moving observer measurements for opposing lanes of traffic are done in quick succession
What is to ensure that they are characterizing the same flow of traffic?
200
These are the five core functions of MPOs
What are establish a setting, evaluate alternatives, maintain long-range plans, involve the public, and develop the TIP?
300
The variable that describes the elevation at any point on a vertical curve
What is Y’?
300
This component of a transportation system is inherently complementary
What is infrastructure (land use and network)?
300
These are the 4 types of resistance that a vehicle must overcome
What are air, rolling, grade and curve?
300
This is the time reserved for the all-red time for each phase
What is 1.5 seconds?
300
This manual is developed by students collecting counts of vehicles at different destinations
What is the ITE Trip Generation Manual?
400
The name of a linear speed-density relationship
What is Greenshields?
400
This system is has the highest speeds, highest costs, limited capacity, and low efficiency
What is air travel?
400
This is the purpose of a median
What is for safety, headlight glare, or pedestrian crossing?
400
This is the fraction of all warrants needed to be met in order to justify putting in a signal
What is 1 of 8?
400
This is a common source of data for study region land use and sociodemographic data
What is the census?
500
Typically 2’ to 12’
What is the range of acceptable shoulder widths?
500
50,000 people or more
What is the population cut off for regions requiring an MPO?
500
This is the type of design vehicle one should select when developing a rural highway or local road
What is a school bus?
500
This is the speed flow relationship preferred for dense traffic only
What is Greenbergs?
500
This is the transportation legislation that instituted the 3C’s
What is the 1962 Federal Aid Highway Act?
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