collapse Title : 01 INTRODUCTION ‎(5)
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-01-01'>1.1 Purpose</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-01-02'>1.2 How to Use the SDU Procedures Manual</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-01-03'>1.3 Definitions and Acronyms</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-01-04'>1.4 References</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-01-05'>1.5 Contacts</a>
collapse Title : 02 PRINCIPALS ‎(7)
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-02-01'>2.1 Introduction </a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-02-02'>2.2 Purpose of Signing and Delineation</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-02-03'>2.3 Regulatory Traffic Control Devices</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-02-04'>2.4 Warning Traffic Control Devices</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-02-05'>2.5 Numbered Routes</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-02-06'>2.6 Sign Messaging</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-02-07'>2.7 Lane Continuity</a>
collapse Title : 03 PROJECT DELIVERY REQUIREMENTS ‎(9)
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-01'>3.1 Introduction </a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-02'>3.2 PEF Prequalification Requirements</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-03'>3.3 Project Timeline</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-04'>3.4 Coordination Requirements</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-05'>3.5 Quality Control Requirements</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-06'>3.6 Submittal Requirements</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-07'>3.7 Division Design Projects and SDU Coordination</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-08'>3.8 SharePoint Application</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-03-09'>3.9 NCDOT eSignature Procedures</a>
collapse Title : 04 SIGNING PLANS ‎(20)
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-01'>4.1 Introduction</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-02'>4.2 NCDOT Sign Types</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-03'>4.3 Plan Elements</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-04'>4.4 Title Sheet</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-05'>4.5 Key Sheet</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-06'>4.6 Ground Mounted Support Design</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-07'>4.7 Overhead Sign Structure Drawings</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-08'>4.8 Sign Designs, General</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-09'>4.9 Type A and B Sign Panel Designs</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-10'>4.10 Type D Panel Designs</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-11'>4.11 Type E Signs (Regulatory and Warning Signs)</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-12'>4.12 Type F Signs (Route Marker Assemblies)</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-13'>4.13 Milemarkers (Reference Location Signs)</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-14'>4.14 Overlay Designs and Placement Details</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-15'>4.15 Supports for Types D, E and F Signs</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-16'>4.16 Signing Plan Sheets</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-17'>4.17 Existing Signing Plan Sheets</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-18'>4.18 Proposed Signing Plan Sheets</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-19'>4.19 Three-Person Check</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-04-20'>4.20 Submittals</a>
collapse Title : 05 PAVEMENT MARKING AND DELINEATION PLANS ‎(21)
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-01'>5.1 Introduction</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-02'>5.2 Plan Elements</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-03'>5.3 Title Sheet</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-04'>5.4 Key Sheet</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-05'>5.5 Pavement Marking Schedule, Legend and Symbols Sheet</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-06'>5.6 Pavement Marking Details</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-07'>5.7 Pavement Marking Plan Sheets</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-08'>5.8 Field Investigations</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-09'>5.9 Pavement Marking Design (Linework)</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-10'>5.10 Pavement Marking Types</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-11'>5.11 Stop Bars (Lines)</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-12'>5.12 Yield Bars (Lines)</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-13'>5.13 Curb Ramps and Crosswalks</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-14'>5.14 Balloon Symbol Callouts</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-15'>5.15 Stationing</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-16'>5.16 Lane and Paved Shoulder Widths</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-17'>5.17 Raised Pavement Markers</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-18'>5.18 Delineators</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-19'>5.19 Object Markers</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-20'>5.20 Permanent Work Zone Traffic Control Devices</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-05-21'>5.21 Submittals</a>
collapse Title : 06 REVISIONS ‎(5)
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-06-01'>6.1 Revisions</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-06-02'>6.2 Time Frames</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-06-03'>6.3 Ground Mounted ‘S’ Dimension Field Verification</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-06-04'>6.4 Overhead ‘S’ Dimension And Slope Field Verification</a>
<a style='float:left;text-align:left;margin-left:20px;' href='https://connect.ncdot.gov/resources/safety/Pages/Signing-and-Delineation-Unit-Procedures-Manual.aspx?Method=SDU-06-05'>6.5 Correction Procedure For All Revisions</a>
  • 02 PRINCIPALS

  • 2.7 Lane Continuity

  • References

    AASHTO's Policy on Geometric Design of Highways and Streets defines Route Continuity as providing a route on which changing lanes is not necessary to continue along the through route.  Interchange designs that adhere to route continuity make the driving task simpler by reducing the need for through drivers to change lanes and typically result in simpler signing and improved traffic operations. AASHTO's Policy provides guidance in providing route continuity for typical interchanges.  However, strategies for providing appropriate route continuity are less defined for complex interchanges in the Policy.  Several key principles of lane continuity are as follows:

    • The highway geometry should favor the through movement, not necessarily the heaviest movement.
    • Highway geometry should communicate the through movement to the driver.
    • Highway geometry should maintain its directional character throughout length of its route.  Local variations due to combined routes or increased traffic can increase the number of basic lanes.
    • A through movement should have at least as many lanes as the exiting movement.

    Approach

    Signing and Delineation, Division Traffic Engineers, GEC's and/or PEFs shall review proposed roadway plans for any deviations from the lane continuity key points described above.  This should be done as soon as possible during a project so that the roadway can be changed to the best design possible while minimizing redesign costs and project delays.

    Strategies to improve lane continuity include, but are not limited to:

    • Establishment of the proper number of basic lanes for a route.
    • Providing as many lanes for through movements as the exiting movement
    • Providing auxiliary lanes between entering and exiting movements
    • Providing lane balance (the number of lanes beyond the merging of two traffic streams should not be less than the sum of all traffic lanes on the merging roadways minus one.
    • Providing collector distributor roads to eliminate weaving.
    • Providing an additional through lane when an entering traffic stream has two or more lanes

      Additional Resources:
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