New Jersey Department of Transportation

Baseline Document Change

NJDOT Design Manual - Roadway Auxiliary Lane at Signalized Intersections


July 17, 2000

Subject: Release of revisions and additions to NJDOT Design Manual - Roadway, Section 1 "Introduction", Section 5 "Major Cross Section Elements", and Section 6"At-Grade Intersections

Attached for inclusion in your copy of the NJDOT Design Manual - Roadway are revisions and additions to the following pages of Sections 1, 5, 6, and 7 along with a revised Table of Contents:

Replace TC-3 and TC-4 with New Page TC-3 and TC-4
Replace Page 1-1 and 1-2 with New Page 1-1 and 1-2
Replace Page 5-5 and 5-6 with New Page 5-5 and 5-6
Replace Page 6-17 and 6-18 with New Page 6-17 and 6-18
Replace Pages 6-21 through 6-43 with New Pages 6-21 through 6-44
Replace Pages 7-9 through 7-12 with New Pages 7-9 through 7-12
Replace Page 7-15 and 7-16 with New Page 7-15 and 7-16

The revisions and additions to the NJDOT Design Manual – Roadway are described as follows

Subsection 1-01
Revised "Auxiliary lane length (interchange)" to "Acceleration/Deceleration lane length (interchange)"

Subsection 5-04.2
Eliminated "(accel or decel lane)" from the second and third sentence in the second paragraph

Subsection. 6-05.3,
Added "increased capacity through an intersection" to the first sentence in the first paragraph.
Added last sentence in first paragraph
Combined the second and third paragraphs and revised "auxiliary lanes" to "acceleration and deceleration lanes"
Added discussion relative to adding auxiliary lanes to increase intersection capacity

Subsections 6-05.4 through 6-10.4
Existing Figures 6-N through 6-Y and references renumbered

Subsection 7-06.4
"auxiliary lanes" in first sentence revised to "acceleration and deceleration lanes"

Section 7
Figure 7-C and 7-D, reference to Figure 6-O revised to 6-N

Instructions to Designers

Effective immediately, the addition of an auxiliary lane at a signalized intersection to increase capacity shall only be incorporated into a project when recommended by the Bureau of Traffic Signals and Safety Engineering. The addition of the auxiliary may be included in projects currently under design that have not progressed to Final Design Development, except when the addition of the auxiliary lane would require substantial cost or schedule changes. In such cases, the Designer shall contact the Department’s Project Manager to determine how to proceed.

Distribution to In-House Staff and Various Public Agencies

The Document Control Unit will distribute this announcement to in-house staff and various Public Agencies in accordance with the distribution list. The hard copy distribution may not be available for at least two weeks after the date of this announcement because of printing delays, so rely on the web for faster service. Please make additional copies as needed.

In-house staff may also obtain a copy of this BDC announcement from the QM shared area on the NJDOT-FA-NTS7 server. To access the shared area, open your Windows Explorer, go to the drop down menu labeled "Tools" and then open pick "Map Network Drive". In the path box, type in \\NJDOT-FA-NTS7\QM, then click OK button.

This BDC Announcements file can also be viewed and/or downloaded from the New Jersey Department of Transportation, Capital Program Management Web Page at When this page is loaded, select "Pop-Up Site Map" at the top of the page and click on "Baseline Document Change Announcements", choose from the various categories that are listed and click on "Go To Selection". Click whatever document you wish to view or download.

Distribution to other Outside Agencies (Consultants, Contractors, etc.)

This BDC Announcement file can be viewed and/or downloaded from the New Jersey Department of Transportation Web Page at CPM/CapitalProgramManagement/. See "Distribution to In-House Staff and Various Public Agencies" above for complete web page instructions.

Hard copies of this BDC Announcement can be obtained by contacting:

            Engineering Documents Unit, E & O Bldg., 1st Floor
            1035 Parkway Avenue
            P.O. Box 600
            Trenton, New Jersey 08625-0600
            Phone: (609) 530-5587
            Fax: (609) 530-6626

Recommended by:


Approved by:


Original Signed          

Original Signed          

Brian Strizki W. Dennis Keck
Manager, Assistant Commissioner,
Quality Management Services Capital Program Management