Skip to main content

Geometric Design Practices for Resurfacing, Restoration, and Rehabilitation (2011) / Chapter Skim
Currently Skimming:


Pages 89-94

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 89...
... Sight Distance Trim, remove, or replace vegetation to improve substandard intersection sight distance, and horizontal and vertical stopping sight distance. Guidance: • Intersection Sight Distance - HDM §5.9.5.1 • Passing Sight Distance - HDM §5.7.2.2 • Horizontal & Sag Vertical SSD - HDM Chapter 2 and HDM §5.7.2.1 and HDM §5.7.2.4 Fixed Objects For 1R projects: Address obvious objects that are within the prevailing clear area and within the ROW based on engineering judgment from a field visit (e.g., tree removal on the outside of a curve or installation of traversable driveway culvert end sections)
Read the entire page →
From page 90...
... Design Vehicle Intersections should accommodate the design vehicle without encroachment into other travel lanes or turning lanes. Driveways Driveways shall meet the spirit and intent of the most recent "Policy and Standards for the Design of Entrances to State Highways" in Chapter 5, Appendix 5A of this manual.
Read the entire page →
From page 91...
... • For non-Interstates, the ETC+10 LOS is at least "D" or, the design approval documents that "The RPPM does not anticipate capacity improvements within ten years." Non-Freeway Intersection Capacity -- Intersections with observed operational or safety problems due to lack of turn lane or insufficient length of turn lane are analyzed in accordance with HDM §5.2. Note: secondary data may be used if approved by the RPPM or Regional Traffic Engineer.
Read the entire page →
From page 92...
... Note: Segments that do not meet all of the above shall undergo an accident analysis using the methodology in HDM §5.3. The accident analysis and recommendations should be attached to the design approval document as an appendix.
Read the entire page →
From page 93...
... analysis is performed in accordance with HDM §5.2 Note: secondary data may be used if approved by the RPPM. The ETC+10 LOS will be at least "D" or the design approval documents that the RPPM or Regional Traffic Engineer does not anticipate capacity improvements within ten years.
Read the entire page →
From page 94...
... Note: Segments that do not meet all of the above shall undergo an accident analysis using the methodology in HDM §5.3. The accident analysis and recommendations should be attached to the design approval document as an appendix.
Read the entire page →

Key Terms

  • design speed
  • safety screening
  • curb ramps
  • design approval
  • guide rail

  • accident analysis
  • sight distance
  • design criteria
  • safety assessment
  • safety work

  • stopping sight
  • geometric design
  • safety treatments
  • approval document
  • locations listed

  • travel lanes
  • safety improvement
  • rural roads
  • state highway
  • road safety

  • project limits
  • shoulder width
  • regional traffic
  • pil list
  • rumble strips

  • traffic engineer
  • existing pavement
  • shoulder widening


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.