These historical illustrations are kept for reference. They are separate from our current sign guide, with the change in standard explained beside each design.
Outdated standard The historical 4-WAY plaque states how many approaches stop. Current MUTCD Section 2B.04 paragraph 05 prohibits numerical approach-count plaques and uses ALL-WAY (R1-3P). This is an outdated standard design, not a finding that every existing installation is unlawful.
Current replacement
R1-3P · All-Way (plaque)
Outdated standard FHWA lists the D9-15 Propane design as discontinued. This describes the sign standard, not whether propane service is available. No direct replacement was established in this review.
Read the official FHWA standard index
Outdated standard FHWA lists the D9-3a Trailer Camping design as discontinued. The historical trailer symbol is retained for recognition; a different camping symbol is not an automatic one-to-one replacement.
Read the official FHWA standard index
Outdated standard FHWA discontinued the two-chevron R6-4 design, as well as the R6-4a and R6-4b variants. The current R6-5P roundabout circulation plaque is a related reference with a different placement and purpose, not a direct replacement for this island-mounted chevron sign.
Related current design
R6-5P · Roundabout Circulation (plaque)
Outdated standard FHWA lists the old R7-7 design as discontinued. The current R7-107 series addresses bus-stop parking restrictions. Its designs and local application must be checked before substituting it in a lesson.
Related current design
R7-107 · No Parking Bus Stop
Outdated standard The historical W1-1a combines a turn arrow and advisory speed on one diamond. FHWA discontinued this design. Current turn warnings use W1-1 with a separate W13-1P advisory-speed plaque where appropriate; the advisory speed is not a posted regulatory speed limit.
Current replacement
W1-1 · Horizontal Alignment - Turn
Current replacement
W13-1P · Advisory Speed (plaque)
Outdated standard The historical W1-2a combines a curve arrow and advisory speed on one diamond. FHWA discontinued this design. The current arrangement uses W1-2 with a separate W13-1P advisory-speed plaque where appropriate. Keep arrow direction and the site-specific advisory speed consistent.
Current replacement
W1-2 · Horizontal Alignment - Curve
Current replacement
W13-1P · Advisory Speed (plaque)
Outdated standard FHWA lists this W11-5a Farm Vehicle design as discontinued. W11-5 is the current Farm Vehicle warning reference. Do not silently substitute a new symbol into an old question or recorded attempt.
Related current design
W11-5 · Farm Vehicle
Outdated standard The historical text sign LANE ENDS MERGE LEFT (RIGHT), W9-2, is discontinued. W4-2 is the current Lane Ends warning reference. A new illustration must preserve the affected lane and merge direction; the current reference is not an automatic replacement for every old lesson.
Related current design
W4-2 · Lane Ends
Independent educational summaries by DMV One Way. Sign designs follow MUTCD conventions; state and local rules can add restrictions. Use your current state handbook and the signs on the road for the rules that apply to your trip.
Sources checked . Current guide illustrations: public-domain FHWA Standard Highway Signs. Historical illustrations: DMV One Way archive.