An old 6-lane (3 lanes each direction) rural freeway segment has 11 ft lanes and frequent roadside obstructions located 10 ft from the right edge of the pavement. What is the estimated FFS (mph) for the 3 northbound lanes? Provide the answer to the nearest tenths. Response Feedback: The BFFS of 75.4 mph is adjusted by 1.9 mph for the 11 ft lanes.
An old 6-lane (3 lanes each direction) rural freeway segment has 11 ft lanes and frequent roadside obstructions located 10 ft from the right edge of the pavement. What is the estimated FFS (mph) for the 3 northbound lanes? Provide the answer to the nearest tenths. Response Feedback: The BFFS of 75.4 mph is adjusted by 1.9 mph for the 11 ft lanes.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![**Scenario:**
An old 6-lane (3 lanes in each direction) rural freeway segment consists of lanes that are 11 feet wide. The freeway has frequent roadside obstructions located 10 feet from the right edge of the pavement. We need to determine the estimated Free Flow Speed (FFS) in miles per hour (mph) for the 3 northbound lanes. Please provide the answer to the nearest tenth.
**Response Feedback:**
The Base Free Flow Speed (BFFS) of 75.4 mph is adjusted by -1.9 mph due to the 11-foot lanes.
**Explanation:**
The calculation focuses on adjusting the base speed to account for lane width. A narrower lane size of 11 feet as opposed to a standard lane affects the usual free flow speed. The adjustment of -1.9 mph reflects this consideration, suggesting a decrease from the base speed owing to possible constraints perceived by drivers caused by lane width.
**Note:**
Understanding these adjustments is critical for traffic engineering and road safety planning, ensuring speed limits reflect roadway conditions and enhance safety.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbe6ebf88-5ef6-49b4-a5a1-aa0279502b67%2Fed0e6a30-25c9-49ce-bc06-7973d90a2ee8%2Fr3vmq9w_processed.png&w=3840&q=75)
Transcribed Image Text:**Scenario:**
An old 6-lane (3 lanes in each direction) rural freeway segment consists of lanes that are 11 feet wide. The freeway has frequent roadside obstructions located 10 feet from the right edge of the pavement. We need to determine the estimated Free Flow Speed (FFS) in miles per hour (mph) for the 3 northbound lanes. Please provide the answer to the nearest tenth.
**Response Feedback:**
The Base Free Flow Speed (BFFS) of 75.4 mph is adjusted by -1.9 mph due to the 11-foot lanes.
**Explanation:**
The calculation focuses on adjusting the base speed to account for lane width. A narrower lane size of 11 feet as opposed to a standard lane affects the usual free flow speed. The adjustment of -1.9 mph reflects this consideration, suggesting a decrease from the base speed owing to possible constraints perceived by drivers caused by lane width.
**Note:**
Understanding these adjustments is critical for traffic engineering and road safety planning, ensuring speed limits reflect roadway conditions and enhance safety.
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 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.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