A model known as stopping sight distance is used by civil engineers to design roadways. This simple model estimates the distance a driver needs in order to stop his car while traveling at a certain speed after detecting a hazard. The model proposed by the American Association of State Highway and Transportation Officials (AASHTO) is given by V² S = 2g(f±G) +TV where S = stopping sight distance (ft) V = initial speed (ft/s) g = accelaration due to gravity, 32.2 ft/s? f = coefficient of friction between tires and roadways G = grade of road T = driver reaction time (s) What are the appropriate units for f and G if the preceding equation is to be homogeneous in units? Show all steps of your work.
A model known as stopping sight distance is used by civil engineers to design roadways. This simple model estimates the distance a driver needs in order to stop his car while traveling at a certain speed after detecting a hazard. The model proposed by the American Association of State Highway and Transportation Officials (AASHTO) is given by V² S = 2g(f±G) +TV where S = stopping sight distance (ft) V = initial speed (ft/s) g = accelaration due to gravity, 32.2 ft/s? f = coefficient of friction between tires and roadways G = grade of road T = driver reaction time (s) What are the appropriate units for f and G if the preceding equation is to be homogeneous in units? Show all steps of your work.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![A model known as stopping sight distance is
used by civil engineers to design roadways. This
simple model estimates the distance a driver
needs in order to stop his car while traveling at
a certain speed after detecting a hazard. The
model proposed by the American Association
of State Highway and Transportation Officials
(AASHTO) is given by
V²
S =
2g(f±G)
+TV
where
S = stopping sight distance (ft)
V = initial speed (ft/s)
g = accelaration due to gravity, 32.2 ft/s?
f = coefficient of friction between tires
and roadways
G = grade of road
T = driver reaction time (s)
What are the appropriate units for f
and G if the preceding equation is to be
homogeneous in units? Show all steps of
your work.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd0d10f55-962b-4a3c-9c1d-99f64fb226a4%2F3a279395-0d1f-47c9-b162-c10d37763564%2Fofw151r_processed.png&w=3840&q=75)
Transcribed Image Text:A model known as stopping sight distance is
used by civil engineers to design roadways. This
simple model estimates the distance a driver
needs in order to stop his car while traveling at
a certain speed after detecting a hazard. The
model proposed by the American Association
of State Highway and Transportation Officials
(AASHTO) is given by
V²
S =
2g(f±G)
+TV
where
S = stopping sight distance (ft)
V = initial speed (ft/s)
g = accelaration due to gravity, 32.2 ft/s?
f = coefficient of friction between tires
and roadways
G = grade of road
T = driver reaction time (s)
What are the appropriate units for f
and G if the preceding equation is to be
homogeneous in units? Show all steps of
your work.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Recommended textbooks for you
![Structural Analysis](https://compass-isbn-assets.s3.amazonaws.com/isbn_cover_images/9781337630931/9781337630931_smallCoverImage.jpg)
![Structural Analysis (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134610672/9780134610672_smallCoverImage.gif)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
![Principles of Foundation Engineering (MindTap Cou…](https://www.bartleby.com/isbn_cover_images/9781337705028/9781337705028_smallCoverImage.gif)
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Structural Analysis](https://compass-isbn-assets.s3.amazonaws.com/isbn_cover_images/9781337630931/9781337630931_smallCoverImage.jpg)
![Structural Analysis (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134610672/9780134610672_smallCoverImage.gif)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
![Principles of Foundation Engineering (MindTap Cou…](https://www.bartleby.com/isbn_cover_images/9781337705028/9781337705028_smallCoverImage.gif)
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Fundamentals of Structural Analysis](https://www.bartleby.com/isbn_cover_images/9780073398006/9780073398006_smallCoverImage.gif)
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
![Sustainable Energy](https://www.bartleby.com/isbn_cover_images/9781337551663/9781337551663_smallCoverImage.gif)
![Traffic and Highway Engineering](https://www.bartleby.com/isbn_cover_images/9781305156241/9781305156241_smallCoverImage.jpg)
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning