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MUTCD 11th Edition Known Errors
As of May 10, 2024

The FHWA intends to correct these errors via a future rulemaking action. This list of known errors is provided solely for the information of MUTCD users and does not constitute official changes to the MUTCD at this time. Please note that minor errata such as punctuation, although being tracked by FHWA, will not be listed.

Part 1

Section 1B.06

  • Paragraph 4: The phrase "futurefor consideration in the next rulemaking" should be changed to "future rulemaking." (December 20, 2023)

Section 1B.07

  • Paragraphs 11 and 13: The reference to "Paragraph 09” should be changed to “Paragraph 10.” (May 10, 2024)

Section 1C.02

  • Paragraph 3: Definitions 111, 158, and 159 are out of alphabetical order. (December 20, 2023)

Part 2

Section 2A.04

  • Paragraph 23: The word “interior” should be placed between “the” and “housing” in the last sentence. (May 10, 2024)

Figure 2A-3

  • Drawing B, the arrow pointing between the STOP sign and the STOP sign location should be changed to a single-headed arrow pointing to the location with no arrowhead pointing to the STOP sign. (May 10, 2024)

Section 2B.10

  • Paragraph 2: Items D and E should be sub-items 1 and 2 of Item C. (December 20, 2023)

Section 2B.21

  • Paragraph 7, Item E: The misspelling “precentile” should be corrected to “percentile." (December 20, 2023)
  • Paragraph 18. The reference to “Traffic Control Devices Handbook” should be changed to “Traffic Control Device Handbook - 2nd Edition, 2013, ITE”. (December 20, 2023)

Section 2B.27

  • Paragraph 5: The word “lane” in the first sentence should have the first letter in upper-case to become “Lane.” (December 20, 2023)

Figure 2B-9

  • Sheet 1 of 3: The north arrow should be facing to the right instead of upwards. (May 10, 2024)

Figure 2B-22

  • The Roundabout Circulation Plaque (R6-5P) should be marked “(optional).” (May 10, 2024)

Section 2B.52

  • Paragraph 4: The period at the end of Item B should be deleted. (December 20, 2023)

Section 2B.53

  • Paragraph 27: The word “the” between “with” and “those” should be deleted. The period should be moved outside of the parentheses. (December 20, 2023)

Section 2B.59

  • Paragraph 3: The extra parenthesis after the word “green” should be deleted. The parenthesis after the word “STOP” should be deleted. (December 20, 2023)
  • Paragraph 9. The word “STEADY” should be removed from “STOP ON STEADY RED-YIELD ON FLASHING RED AFTER STOP.” (December 20, 2023)

Figure 2C-2

  • Sheet 1 of 2: The W13-1P sign and W13-1aP plaques, and Note 4, should all show “35 MPH.” (May 10, 2024)

Section 2C.12

  • Paragraph 9: The word “Speed” should be added to “Combination Horizontal Alignment/Advisory Exit signs” to read “Combination Horizontal Alignment/Advisory Exit Speed signs.” (December 20, 2023)

Section 2C.60

  • Paragraph 2: The text, “6 Months”, should be changed to, “12 Months”, to be aligned with the provisions for the NEW Plaque (W16-15P) in Section 2A.11. (May 23, 2024)

Table 2D-2

  • Sheet 2 of 2, row 2: The text “, U.S., State,” should be deleted. (December 20, 2023)

Figure 2D-2

  • A – Cardinal directions and orientations, notes under the sign on the right: The words “’South’ is a cardinal direction” should be changed to “’South’ is a pre-directional designation.” (December 20, 2023)

Section 2D.08

  • Paragraph 25: The reference to “Section 2D.41” should be changed to “Section 2E.41.” (December 20, 2023)

Section 2D.09

  • Paragraph 5: The reference to “Paragraph 6” should be changed to “Paragraph 7.” (December 20, 2023)

Section 2D.25

  • Paragraph 1: The reference to “Chapter 6F” should be changed to “Chapter 6I.” (May 10, 2024)

Figure 2D-13

  • Sheet 1 of 3, Drawing A: The County Name legend is missing from the independently mounted County Route (M1-6) signs. (May 10, 2024)

Section 2D.45

  • Paragraph 9: Add the words “the combination of lower-case letters with” between the words “are” and “the” In the last sentence (May 10, 2024)
  • Paragraph 35: The reference to paragraphs “3, 4, 6, 9, 12 through 14, and 18 through 20” should be corrected to “5, 7, 8, 13, 14, 20, 21, 23, and 28 through 30.” (May 10, 2024)

Section 2D.51

  • Paragraph 3 Item A, and Paragraph 7: The language “Weigh Station Advance (D8-1)” should be changed to “Weigh Station Advance (D8-1a) or Advance Weigh Station Distance (D8-1)” to allow the use of a D8-1a sign as shown in Figure 2D-23. (December 20, 2023; Revised May 10, 2024)

Figure 2D-23

  • Footnote *: The sign designation “D8-1” should be added between “D8-1a” and “or” to read “D8-1a, D8-1, or the D8-2 sign.” (May 10, 2024)
  • Next to the Weigh Station Ahead (D8-1a) sign, the word “or” should be added and a Advance Weigh Station Distance (D8-1) sign should be shown. (May 10, 2024)

Section 2D.54

  • Paragraph 1: Delete the word “Advance” between the words “Turn-Out” and “(D17-5).” (May 10, 2024)

Section 2D.55

  • Paragraphs 33 and 34: The reference to “Section 1C.05” should be changed to “Section 1A.05.” (May 10, 2024)

Section 2E.03

  • Paragraph 1, Item H: This item “At-Grade Intersection signs (see Section 2E.58);” should be deleted and the remaining items re-lettered. (May 10, 2024)

Section 2E.07

  • Paragraph 4: The referenced edition of the AASHTO Guidelines for Supplemental Guide Signing should be changed from “4th” to “5th.” (May 10, 2024)

Table 2E-4

  • In the header for the Overhead column an asterisk should be added with a corresponding note below the table stating, “Where a larger size is shown for the interchange classification of the interchange, that larger size is used for overhead-mounted guide signs for that interchange.” The existing single asterisks in the Numerals row for the Major, Category a and Overhead columns and the corresponding note should be changed to a double asterisk. (May 10, 2024))

Figure 2E-2

  • To the right of match line B: the distances shown on the advance guide signs should be ½ MILE and 1 MILE. (May 10, 2024)

Figure 2E-6

  • I-407: The Exit numbers 4A and 4B should be changed to 44A and 44B. (May 10, 2024)
  • I-407: The asterisk should be deleted from the Interchange number 47 label. (May 10, 2024)

Figure 2E-7

  • I-3: The symbol showing the “Junction of two Interstate routes” and Interchange numbers 11 and 15 between reference location signs 11 and 12 should be removed. (May 10, 2024)
  • I-3 and I-103 (north) Inset: The interstate shield I-407 should be changed to I-103. (May 10, 2024)
  • I-3: Interchange number 1 should be changed to Interchange number 4, and the asterisk should be deleted. (May 10, 2024)
  • I-303: A “Spur” label should be added. (May 10, 2024)
  • I-303: Interchange number 4 should be changed to Interchange number 1, and an asterisk should be added. (May 10, 2024)
  • I-3 and I-303 (South) Inset: The geometry and direction (to the East) of I-203 should be changed to match the direction (to the West) of I-303, the I-203 symbol should be changed to I-303, and the “Loop” label should be changed to “Spur.” (May 10, 2024)

Section 2E.23

  • Paragraph 7: The words “but not more than 1 mile” should be deleted. (May 10, 2024)

Section 2E.28

  • Paragraph 1: The Section reference “2E.39 through 2E.42” should be changed to “2E.39, 2E.40, and 2E.42.” (May 10, 2024)
  • Paragraph 02: The Paragraph reference “15” should be changed to “14.” (May 10, 2024)
  • Paragraph 11: The words “post-mounted and overhead” should be switched in order to read “overhead and post-mounted” to correspond with the reference to Figures 2E-20 and 2E-21 respectively. (May 10, 2024)

Section 2E.30

  • Paragraph 2: The word “interchanges” should be changed to “interchange.” (December 20, 2023)

Figure 2E-20

  • The north arrow should be facing to the right instead of left. (May 10, 2024)

Figure 2E-23

  • Drawing A: The down arrow on the overhead interchange advance guide sign should be moved below the ½ MILE distance legend. (May 10, 2024)
  • Drawings A and B; The W4-2R signs should be located at the advanced placement distance. (May 10, 2024)

Section 2E.39

  • Paragraph 2: The words “either the” should be deleted between the words “expressways,” and “Overhead.” The Section reference “Sections 2E.40 and 2E.41” should be, “Section 2E.40” (May 10, 2024)

Table 2E-6

  • In the top row, the misspelling “Principle” should be corrected to “Principal.” (May 10, 2024)

Figure 2E-41

  • Drawing D: The exit number suffix on the right exit number plaque should be changed from “A” to “B.” (May 10, 2024)

Section 2E.42

  • Paragraph 6: The words “either full-width or” should be deleted. (May 10, 2024)
  • Paragraph 9: The words “the modified” should be replaced with “partial-width.” (May 10, 2024)

Section 2E.45

  • Paragraph 2, Item C: The words “with an initial upper-case letter” should be added between the words “heights” and “of.” (May 10, 2024)

Section 2E.49

  • Paragraph 4: The section reference “2E.47” should be changed to “2E.48.” (May 10, 2024)

Section 2F.06

  • Paragraph 3: The word “overhead” should be deleted between the words “installed” and “at.” (May 10, 2024)

Section 2F.17

  • Paragraph 4: The reference, “(See Drawing B in Figure 2F-12)” should be deleted as the sign described in the Option is not shown in the Figure. (May 10, 2024)

Section 2F.18

  • Paragraph 3: The reference, “(see Figure 2F-8)” should be deleted. Although the right sign in Drawing C includes the NO TOLL panel, the sign is not an Exit Gore sign as described in the Option. (May 10, 2024)

Section 2G.03

  • Paragraph 15: The reference to “Section 2A.14” should be changed to “Section 2A.15” and the text “or shoulder” should be added after the word “roadway.” (May 10, 2024)

Section 2G.04

  • Paragraph 2, sentence 3: The word “to” between the words “not” and “be” should be deleted. (December 20, 2023)

Section 2G.05

  • Paragraph 15: The reference to “Paragraph 14 of this Section” should be changed to “Paragraph 13 of this Section.” (May 10, 2024)

Section 2G.18

  • Paragraph 5: The reference to “Figure 2G-19” should be changed to “Figure 2G-18.” (May 10, 2024)
  • Paragraph 6: The language “priced managed lane HOV Lane Operation (R3-44 or R3-44a) sign” should be changed to “Priced Managed Lane Operation (R3-44, R3-44a, or R3-44b) sign.” (May 10, 2024)

Section 2G.26

  • Paragraph 3: The reference to “Section 1C.05” should be changed to “Section 1A.05.” (May 10, 2024)

Section 2H.12

  • Paragraph 5: The phrase “Except as provided in Paragraph 6 of this Section” should be deleted. (December 20, 2023)

Section 2H.14

  • Paragraph 8: The second use of the phrase “alternative fuels corridor” between the words “the” and “sign” should be capitalized to appear as “Alternative Fuels Corridor.” (December 20, 2023)

Section 2I.03

  • Between Paragraphs 5 and 6: The header “Guidance” should be deleted. (December 20, 2023)
  • Paragraph 26: The bold font should be removed to indicate an Option statement. (December 20, 2023)

Section 2J.03

  • Paragraph 11: The service category “attraction” should be added to the Option. (May 10, 2024)

Table 2L-4

  • Example 6: The word “MILE” in the improved message should be changed to “MILES.” (May 10, 2024)

Part 3

Section 3B.01

  • Between Paragraphs 6 and 7: The header “Guidance” should be changed to “Support.” (December 20, 2023)
  • Paragraph 7: The font should not be italicized to indicate a Support statement. (December 20, 2023)
  • Between Paragraphs 7 and 8: The header “Guidance” should be added. (December 20, 2023; Revised May 10, 2024)

Section 3B.12

  • Paragraph 7B, Item B: The reference to “Drawing F in Figure 3B-21” should be changed to “Drawing I in Figure 3B-21.” (May 10, 2024)

Figure 3B-14

  • Both drawings A – Lane reduction and B – Lane reduction with lateral shift to the left: The W4-2R signs should be located at the advanced placement distance where the W9-1R and W16-2P signs and plaques are shown. The W9-1R and W16-2P signs and plaques should be shown at a location in advance of the W4-2R signs. (May 10, 2024)

Section 3B.17

  • Paragraph 4: The reference to “Section 6J.02” should be changed to “Section 6J.03.” (December 20, 2023)

Figure 3B-21

  • Drawing E: "U-Turn and through lane-use arrow” should be revised to “U-Turn and turn lane-use arrow.” (May 10, 2024)

Section 3H.07

  • Paragraph 7: The words "or dotted” should be added to the Option provision between “broken” and “pattern.” (May 10, 2024)

Figure 3H-5

  • A – Bus only lane: The longitudinal marking between the general-purpose traffic lane and the preferential lane for transit should be a wide broken single white lane line rather than a wide solid single white lane line for the portion adjacent to parallel on-street parking. (May 10, 2024)

Part 4

Table 4C-1

  • Above the second sub-table add the text “Condition B—Interruption of Continuous Traffic.” (May 10, 2024)

Figure 4C-7

  • In the parentheses below the figure title, “40 MPH” should be changed to “35 MPH.” (December 20, 2023)

Figure 4C-8

  • In the parentheses below the figure title, “40 MPH” should be changed to “35 MPH.” (December 20, 2023)

Section 4E.04

  • Paragraph 5: Add Figure “4F-3” to the list of figures in parenthesis. (May 10, 2024)

Figure 4F-14

  • A-Typical Position: Add ** to the green arrow signal face (rightmost signal head). (May 10, 2024)

Figure 4I-4

  • Footnote **: The Section reference should be changed from “Section 4I.07” to “Section 4I.06.” (May 10, 2024)

Section 4J.02

  • Paragraph 8: The word “STEADY” should be removed from “STOP ON STEADY RED—YIELD ON FLASHING RED AFTER STOP.” (December 20, 2023)

Section 4L.02

  • Paragraph 14: The word legend “PUSH BUTTON TO TURN ON WARNING LIGHTS/AWAIT GAP IN TRAFFIC” should be changed to “PUSH BUTTON FOR WARNING LIGHTS/WAIT FOR GAP IN TRAFFIC.” (May 10, 2024)

Section 4U.02

  • Between Paragraph 2 & 3: The reference number for the paragraph that starts with, “If In-Roadway Warning Lights are used…”, is missing and should be added as “03.” The subsequent paragraphs should be re-numbered as “04” through “15.” (December 20, 2023)
  • Paragraph 11: The word legend “Push Button To Turn On Warning Lights/WAIT FOR GAP IN TRAFFIC” should be changed to “PUSH BUTTON FOR WARNING LIGHTS/WAIT FOR GAP IN TRAFFIC.” (May 10, 2024)

Part 5

Section 5B.04

  • Paragraph 1: The word “AVs” should be added after “to support” to read “Agencies seeking to better accommodate driving automation systems to support AVs,…". (May 10, 2024)

Part 6

Table 6H-1

  • The row referencing “Bike Diversion (with distance) W20-2b" should be removed from the table. (May 10, 2024)

Section 6H.12

  • Paragraph 1: The reference to “Figure 6H-1” should be changed to “Figure 6I-1.” (May 10, 2024)

Section 6I.01

  • Paragraph 7: The paragraph should be labeled as a Standard and the text displayed in bold font. (May 10, 2024)

Section 6L.05

  • Paragraph 9: The reference to “Table 2A-5” should be change to Table 2A-2. (December 20, 2023; Revised May 10, 2024)

Section 6N.04

  • Paragraph 6, first sentence: The word “short-term” should be added between the words “for” and “and mobile” to read “Except for short-term and mobile operations…” (December 20, 2023)

Section 6N.19

  • Paragraph 3: The reference to “R9-4a” should be change to “R4-9a.” (May 10, 2024)

Figure 6N-1

  • The designation “R9-4a” should be changed to “R4-9a.” (May 10, 2024)

Figure 6P-5

  • The sign designation “W16-2P” should be changed to “W16-2aP.” (May 10, 2024)

Figure 6P-7

  • The misspelling “Typical Appiication 7” should be corrected to “Typical Application 7.” (May 10, 2024)

Figures 6P-47, 6P-48, and 6P-50

  • The word legend on the sign labeled “R9-20” should be corrected to “ALLOWED USE OF FULL LANE.” (May 10, 2024)

Figure 6P-49

  • The third PATH CLOSED (R11-2c) sign from the top of the diagram should be displayed right-side up. (May 10, 2024)

Part 7

Section 7B.03

  • Paragraph 11: The reference to “Figure 7B-4” should be changed to “Figure 7B-1.” (May 10, 2024)

Part 9

Section 9A.01

  • Between Paragraphs 5 and 6: The header “Support” should be deleted. (December 20, 2023)

Section 9B.02

  • Paragraph 3: Sign designation “W16-20P” should be “R3-7bP.” (May 10, 2024)

Figure 9B-5

  • Title of figure should be changed from "Two-Stage Bicycle Turn Box when Use is Mandatory" to "Two-Stage Bicycle Turn Box where Use is Mandatory." (May 10, 2024)
  • The NO TURN ON CIRCULAR RED (R10-11a) signs should be changed to NO TURN ON RED (R10-11) signs. (May 10, 2024)

Section 9C.04

  • Between Paragraphs 3 and 4: The header “Guidance” should be added. (May 10, 2024)
  • Between Paragraphs 4 and 5: the header “Guidance” should be removed. (May 10, 2024)
  • Paragraph 4: Change from regular font to italicized font, as this paragraph is Guidance, not an Option. (December 20, 2023, Revised May 10, 2024)

Section 9D.01

  • Section title: Change the phrase, “Bicycle Destination Signs” to “Bicycle Destination and Distance Signs.” (May 10, 2024)

Section 9D.04

  • Paragraph 2: Add the word “and” between “Highway” and “Transportation.” (May 10, 2024)

Section 9D.05

  • Paragraph 1: Change the phrase, “the Bicycle Route (M1-8 or M1-8a) sign” to: “the Numbered Bicycle Route (M1-8 or M1-8a) sign.” (May 10, 2024)

Section 9D.08

  • Between Paragraphs 12 and 13: The header “Support” should be added. (December 20, 2023)

Section 9D.13

  • Between Paragraphs 8 and 9: The header “Support” should be added. (December 20, 2023)

Figure 9D-7

  • Change title from "…when Use is Optional" to "…where Use is Optional." (May 10, 2024)

Section 9E.02

  • Paragraph 6: Add the phrase "or word marking" after the phrase "bicycle symbol." (May 10, 2024)

Section 9E.05

  • Paragraph 3: Change the word “circular” to “circulatory.” (May 10, 2024)
  • Paragraph 8: The text “The FHWA’s information guide ‘Improving Intersections for Pedestrians and Bicycles’” should be changed to “The ‘Improving Intersections for Pedestrians and Bicyclists Informational Guide’ (FHWA-SA-22-017), FHWA,.” (May 10, 2024)

Section 9E.07

  • Paragraph 14: Add the phrase, “edges of the” between the words “The” and “buffer space.” (May 10, 2024)

Figure 9E-7

  • Drawings D and F: Edge line extension pavement markings in the form of a dotted line from the southern leg of the intersection to the eastern leg of the intersection should be added in addition to the tubular markers with a callout indicating “optional.” (May 23, 2024)
  • Drawing G: In the northern leg of the intersection, the stop line should be placed for southbound traffic, not northbound traffic. The edge line extension from the southern leg of the intersection to the eastern leg of the intersection should be corrected to a dotted line with a callout indicating “optional.” (May 10, 2024)

Section 9E.11

  • Paragraph 4, Item C: Delete the word “or” from the phrase “parallel or motor.” (May 10, 2024)

Section 9E.17

  • Paragraph 8: Change the phrase, “If used in buffer-separated bicycle lanes” to: “If used in separated bicycle lanes.” (May 10, 2024)

Appendix A2

Table A2-4. Conversion of Miles per Hour to Kilometers/Hour

  • In the fourth table of four, the conversion showing 65 mph to 110 km/h should be changed to a conversion showing 70 mph to 110 km/h. (May 10, 2024)