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Published byBrianna Rogers
Modified over 3 years ago
Barrier Design Principles
Principle 1: Distance from Roadway Place Guardrail As Far From Traveled Way As Practical
Principle 2: 2 Minimum Clearance For Slope Locations 2 Measured From Back of Post Hinge Point
Reduce post spacing
Principle 3: Barrier to Hazard Distance Barrier to Hazard Distance Is Critical Element
TT hit pier
Principle 4: Terrain Effects Curbs Slopes
Curbs Not Recommended on High-Speed Roadways Or With Guardrail Unless Adequately Stiffened
Slopes Maximum slope of 1:10 or Flatter in Front of Barriers Vehicle will be airborne due to slope. The height of the rail and correlation to the height of the bumper is critical. Guardrail should not be installed on a slope steeper than 1:6
Recommended Barrier Placement on Slopes
Rail away from road
Traffic Barrier Guidelines Other Considerations Workshop V September-October 2015.
Session 3 Grading Requirements for Guardrail End Treatments.
Cross section elements consist of the following: 1.Traffic lanes (carriage ways); 2.Shoulders; 3.Medians; 4.Curbs; 5.Side slopes.
Session 7 How Critical is it to Properly Install Guardrail End Terminals???
Traffic Barrier Guidelines Other Considerations Hands-On Workshop III July
Barrier Warrants. Potential Hazards –Bridge Abutments/Piers/Approach Railing –Large Drainage Structures –Non-Breakaway Sign and Luminaire Supports –Embankments.
Velocity –Time Graphs.
“You Could Learn a Lot About Guardrail From a Dummy…
Cross Section Design Spring 2015.
Chap 4 Cross Section Elements (pp.4-1 – 4-66 ) The following topics (pages) are covered in this lecture: Pavement (p.4-1 – 4-7) Pavement (p.4-1 – 4-7)
Applying the Equations of Motion Physics 11 Equations of Motion.
Learning Objectives To define and apply basic measures of traffic flow, including; Speed Volume Density Spacing and Headway Lane occupancy Clearance and.
Traffic Barrier Guidelines Section 3.0 Potential Roadside Obstacles Hands-On Workshop III July
Driving Environments. Rural Driving The speed limit on rural roads when not posted is 35 mph. Many rural roads are two-lane, two-way roadways. Curves.
REFERENCE POINTS Relating a part of the vehicle to some part of the roadway. This relationship is a helpful visual reference of your vehicle in it’s operating.
SCHOOL BUS STOPS OVERHEAD LIGHT and HAZARD LIGHT Effective July 21, 2004 Revised January 2007.
Maintenance of Traffic (MOT)
Chapter 15: Driving in Rural Areas
Complete Streets Training Module 10 – Street Elements: Design & Safety Considerations for Context-Based Solutions.
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