CE 305 Exam 1 QUESTIONS & ANSWERS
(T/F) Vertical Curves are parabolas - Answers:True
(T/F) The cross section of a highway is flat - Answers:False
When are spirals used in horizontal curves? - Answers:Most of the time, especially for railroads
Definition of Transportation - Answers:Movement in space, time, and state
Major impacts from transportation - Answers:-Air pollution
-Land consumption
-Noise pollution
-Greater mobility and accessibility
Highway fatalities... - Answers:Are on the rise
A mode is - Answers:-A statistical concept
-A means of conveyance, such as using an auto
-A combination of technologies that accomplishes a trip
The largest freight network in the US is - Answers:Pipeline
(T/F) Transportation is a derived demand - Answers:True
The reaction time is typically - Answers:2.5 sec
The reaction time includes - Answers:-Perceive
-Interpret
, -Emotional assessment
-Action
Uphill grades - Answers:Decrease the stopping distance
In the stopping sight distance formula, the symbol "f" denotes the - Answers:friction coefficient
A typical value for "f" is - Answers:0.2-0.3
In stopping sight distance - Answers:The driver is at 3.5' and the object is at 6"
Cross sections are - Answers:Across the highway from one side to the other
Typical cross slopes are - Answers:-4-6%
-Incrementally increasing across the lanes
Vertical curves are - Answers:Parabolas
The rate of change in grade - Answers:-Varies linearly with distance
-Is constant
The PVI of a vertical curve is - Answers:The point where the tangents intersect
(T/F) The sight distance is always shorter than the length of the vertical curve - Answers:True
The PVI is always - Answers:Halfway through the vertical curve
The lowest or highest point on the vertical curve - Answers:Typically occurs where the fist
derivative is zero
(T/F) Vertical Curves are parabolas - Answers:True
(T/F) The cross section of a highway is flat - Answers:False
When are spirals used in horizontal curves? - Answers:Most of the time, especially for railroads
Definition of Transportation - Answers:Movement in space, time, and state
Major impacts from transportation - Answers:-Air pollution
-Land consumption
-Noise pollution
-Greater mobility and accessibility
Highway fatalities... - Answers:Are on the rise
A mode is - Answers:-A statistical concept
-A means of conveyance, such as using an auto
-A combination of technologies that accomplishes a trip
The largest freight network in the US is - Answers:Pipeline
(T/F) Transportation is a derived demand - Answers:True
The reaction time is typically - Answers:2.5 sec
The reaction time includes - Answers:-Perceive
-Interpret
, -Emotional assessment
-Action
Uphill grades - Answers:Decrease the stopping distance
In the stopping sight distance formula, the symbol "f" denotes the - Answers:friction coefficient
A typical value for "f" is - Answers:0.2-0.3
In stopping sight distance - Answers:The driver is at 3.5' and the object is at 6"
Cross sections are - Answers:Across the highway from one side to the other
Typical cross slopes are - Answers:-4-6%
-Incrementally increasing across the lanes
Vertical curves are - Answers:Parabolas
The rate of change in grade - Answers:-Varies linearly with distance
-Is constant
The PVI of a vertical curve is - Answers:The point where the tangents intersect
(T/F) The sight distance is always shorter than the length of the vertical curve - Answers:True
The PVI is always - Answers:Halfway through the vertical curve
The lowest or highest point on the vertical curve - Answers:Typically occurs where the fist
derivative is zero
