In Roadway Cross-Sections, you'll learn ...
- General design concepts for roadway cross-sections
- The fundamental design considerations for roadsides: clear zones and lateral offsets
- Drainage design considerations
- Design considerations for curbs and medians
- Noise control design procedures
This course focuses on the geometric design of cross-sections for modern roads and highways and is intended to serve as guidance and not as an absolute standard or rule.
The course objective is to give engineers and designers an in-depth look at the principles to be considered when selecting and designing roadway cross-sections. Upon course completion, you should be familiar with the general guidelines for roadway cross-section geometric design.
A Policy on Geometric Design of Highways and Streets (also known as the “Green Book”) published by the American Association of State Highway and Transportation Officials (AASHTO) is considered to be the primary guidance for U.S. roadway design. For this course, Chapter 4 - Cross-Section Elements will be used exclusively for fundamental roadway geometric design principles.
The AASHTO “Green Book” defines a roadway cross-section as “a vertical section of the ground and roadway at right angles to the centerline of the roadway, including all elements of a highway or street from right-of-way line”. Along with the vertical alignment (grades and vertical curves) and horizontal alignment (tangents and curves), the roadway cross-section (lanes and shoulders, curbs, medians, roadside slopes and ditches, sidewalks) helps provide a three-dimensional roadway model. Its ultimate goal is to provide a safe, smooth-flowing facility that is crash-free.
Specific Knowledge or Skill Obtained
This course teaches the following specific knowledge and skills:
- Typical roadway cross-section elements
- Components of the traveled way
- Lane widths
- Characteristics of roadway shoulders
- Principles of roadside design
- Curb categories and usage
- Rumble strips
- Design and application of on-street parking
- Typical applications for drainage channels
- Various types of traffic barriers
- Noise reduction design
- Design and application of pedestrian facilities
- Tunnel design
- Types of bus turnouts
- Bicycle facilities
- “Clear zone” concept
- Park-and-Ride facilities
Certificate of Completion
You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 30 questions. PDH credits are not awarded until the course is completed and quiz is passed.
|This course is applicable to professional engineers in:|
|Alabama (P.E.)||Alaska (P.E.)||Arkansas (P.E.)|
|Delaware (P.E.)||Florida (P.E. Area of Practice)||Georgia (P.E.)|
|Idaho (P.E.)||Illinois (P.E.)||Illinois (S.E.)|
|Indiana (P.E.)||Iowa (P.E.)||Kansas (P.E.)|
|Kentucky (P.E.)||Louisiana (P.E.)||Maine (P.E.)|
|Maryland (P.E.)||Michigan (P.E.)||Minnesota (P.E.)|
|Mississippi (P.E.)||Missouri (P.E.)||Montana (P.E.)|
|Nebraska (P.E.)||Nevada (P.E.)||New Hampshire (P.E.)|
|New Jersey (P.E.)||New Mexico (P.E.)||New York (P.E.)|
|North Carolina (P.E.)||North Dakota (P.E.)||Ohio (P.E. Self-Paced)|
|Oklahoma (P.E.)||Oregon (P.E.)||Pennsylvania (P.E.)|
|South Carolina (P.E.)||South Dakota (P.E.)||Tennessee (P.E.)|
|Texas (P.E.)||Utah (P.E.)||Vermont (P.E.)|
|Virginia (P.E.)||West Virginia (P.E.)||Wisconsin (P.E.)|