CE 401 || 100% Accurate Answers.
Define system. What are the main characteristics? correct answers A system is a collection of
elements that respond to each other to serves a purpose. Systems have attributes that change with
each other and they have boundaries that separate them from other systems.
What does it mean to use a system approach? correct answers recognize and define the system
and isolate the system components that are most relevant to the problem you are trying to solve.
when you represent a problem as a system, a change in one element will effect the whole system
Define transportation system. What are the components of a transportation system? correct
answers A set of physical and operational elements that satisfy the demand of a system. The
physical components are infrastructure (like stations, highways), vehicles, power systems, fuel,
location systems, transportation related equipment. The operational components are operators
(laborers, unions, maintenance managers, marketers, strategic planners, operations and demand
managers) and operating plans (crew schedules, contingency plans)
Define activity system. What are the components of an activity system? correct answers A set of
individual, social, and economic behaviors that require travel. Components are households,
economic activities, real estate
What are some examples of how the components of the activity system interact? correct answers
The number of households impacts the amount of businesses that establish themselves there, this
then makes the place a more desirable place to live so the price of houses increases
What do transportation system analysts do? correct answers They attempt to predict the demand
of the system and come up with alternatives for transportation system improvements and
consider the impacts to choose the best option
What are the three main changes continuously happening in the world relevant to transportation
correct answers Technology - these advancements change how people travel and what they look
for in travel options
Values - you cannot design for individuals, you need to ensure that there are no detrimental
impacts
,Demand - in reference to how many people travel, where they go, when they go
What are the four key stakeholders and why? correct answers Users - they use the system and set
the demand
Operators - they set the schedules for travel and the price all of which affect the demand
Government - they dictate when the operators can operator and where and how much they will
be taxed for it
Community - the improvements have impacts on the surrounding real estate, environment, etc.
What are the four challenges of transportation analysis? correct answers Transportation is
multimodal, the analysis is multidisciplinary (draws on engineering and econ and political
science), predicting demand means predicting human behavior which is complex, and every
problem is different because conditions are never the same
How do the activity system and the transportation system interact? correct answers The
transportation system and the activity system determine the flow of the system. If the
transportation system improves it will increase the demand for travel. This makes the town better
for the activity system (people want to move to where things are happening and businesses will
invest and move there) which increases the population and begs for an improvement in the
transportation system again.
Explain the type 1 relationship between transportation and activity system. correct answers the
flow pattern in the system is dependent on both the transportation system and the activity system.
eventually, the two will reach equilibrium
Explain the type 2 relationship between transportation and activity system. correct answers the
current flow pattern, like routes available, and improvements in the transportation system
encourage changes in the activity system. For example, the improvements in the transportation
system that makes the system more connected and accessible make it more desirable. these
changes take a long time to materialize, that is they happen in the long run
Explain the type 3 relationship between transportation and activity system. correct answers the
actual flow pattern influences decisions made about improvements to the transportation system.
, the analysists should come up with improvements to address the problems, assess the impacts,
and choose the best alternative.
Service function. What's it dependent on? What does it represent? How it is shaped and what
does that tell us? correct answers it shows how the level of service of a transportation system is
dependent on the volume of flow. it represents the transportation system. it is concave down
when the y axis is LOS and the x axis is V which tells us that as the volume increases, the level
of service decreases
Demand function. What's it dependent on? What does it represent? How it is shaped and what
does that tell us? correct answers it shows how the volume of flows for an activity system is
dependent on the level of service experienced by travelers. it is a function that represents the
activity system. when s is on the y axis and v is on the x axis, its concave up which means that as
the level of service increases, so does the volume of flow.
equilibrium flow correct answers the flow pattern that will actually occur. graphically, its the
point where the demand and service function intersect
How to mathematically determine the equilibrium flow pattern given a demand function and
service function? correct answers the functions are in terms of the same variables so you have
two functions and two unknowns so you can use substitution and determine the demand and the
service parameter
How to solve problems related to the total cost, revenue, and net revenue? correct answers Total
revenue is price per unit * demand
Net revenue is total revenue - total cost
There exists the theory of consumer behavior for divisible commodities. What are the 5
assumptions necessary to apply this theory? correct answers 1. the world has only two goods:
transportation (T) and all other goods (x)
2. both are divisible (they can be consumed in any unit or fraction)
3. consumer preferences are complete (they always have a preference)
Define system. What are the main characteristics? correct answers A system is a collection of
elements that respond to each other to serves a purpose. Systems have attributes that change with
each other and they have boundaries that separate them from other systems.
What does it mean to use a system approach? correct answers recognize and define the system
and isolate the system components that are most relevant to the problem you are trying to solve.
when you represent a problem as a system, a change in one element will effect the whole system
Define transportation system. What are the components of a transportation system? correct
answers A set of physical and operational elements that satisfy the demand of a system. The
physical components are infrastructure (like stations, highways), vehicles, power systems, fuel,
location systems, transportation related equipment. The operational components are operators
(laborers, unions, maintenance managers, marketers, strategic planners, operations and demand
managers) and operating plans (crew schedules, contingency plans)
Define activity system. What are the components of an activity system? correct answers A set of
individual, social, and economic behaviors that require travel. Components are households,
economic activities, real estate
What are some examples of how the components of the activity system interact? correct answers
The number of households impacts the amount of businesses that establish themselves there, this
then makes the place a more desirable place to live so the price of houses increases
What do transportation system analysts do? correct answers They attempt to predict the demand
of the system and come up with alternatives for transportation system improvements and
consider the impacts to choose the best option
What are the three main changes continuously happening in the world relevant to transportation
correct answers Technology - these advancements change how people travel and what they look
for in travel options
Values - you cannot design for individuals, you need to ensure that there are no detrimental
impacts
,Demand - in reference to how many people travel, where they go, when they go
What are the four key stakeholders and why? correct answers Users - they use the system and set
the demand
Operators - they set the schedules for travel and the price all of which affect the demand
Government - they dictate when the operators can operator and where and how much they will
be taxed for it
Community - the improvements have impacts on the surrounding real estate, environment, etc.
What are the four challenges of transportation analysis? correct answers Transportation is
multimodal, the analysis is multidisciplinary (draws on engineering and econ and political
science), predicting demand means predicting human behavior which is complex, and every
problem is different because conditions are never the same
How do the activity system and the transportation system interact? correct answers The
transportation system and the activity system determine the flow of the system. If the
transportation system improves it will increase the demand for travel. This makes the town better
for the activity system (people want to move to where things are happening and businesses will
invest and move there) which increases the population and begs for an improvement in the
transportation system again.
Explain the type 1 relationship between transportation and activity system. correct answers the
flow pattern in the system is dependent on both the transportation system and the activity system.
eventually, the two will reach equilibrium
Explain the type 2 relationship between transportation and activity system. correct answers the
current flow pattern, like routes available, and improvements in the transportation system
encourage changes in the activity system. For example, the improvements in the transportation
system that makes the system more connected and accessible make it more desirable. these
changes take a long time to materialize, that is they happen in the long run
Explain the type 3 relationship between transportation and activity system. correct answers the
actual flow pattern influences decisions made about improvements to the transportation system.
, the analysists should come up with improvements to address the problems, assess the impacts,
and choose the best alternative.
Service function. What's it dependent on? What does it represent? How it is shaped and what
does that tell us? correct answers it shows how the level of service of a transportation system is
dependent on the volume of flow. it represents the transportation system. it is concave down
when the y axis is LOS and the x axis is V which tells us that as the volume increases, the level
of service decreases
Demand function. What's it dependent on? What does it represent? How it is shaped and what
does that tell us? correct answers it shows how the volume of flows for an activity system is
dependent on the level of service experienced by travelers. it is a function that represents the
activity system. when s is on the y axis and v is on the x axis, its concave up which means that as
the level of service increases, so does the volume of flow.
equilibrium flow correct answers the flow pattern that will actually occur. graphically, its the
point where the demand and service function intersect
How to mathematically determine the equilibrium flow pattern given a demand function and
service function? correct answers the functions are in terms of the same variables so you have
two functions and two unknowns so you can use substitution and determine the demand and the
service parameter
How to solve problems related to the total cost, revenue, and net revenue? correct answers Total
revenue is price per unit * demand
Net revenue is total revenue - total cost
There exists the theory of consumer behavior for divisible commodities. What are the 5
assumptions necessary to apply this theory? correct answers 1. the world has only two goods:
transportation (T) and all other goods (x)
2. both are divisible (they can be consumed in any unit or fraction)
3. consumer preferences are complete (they always have a preference)
