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The Ohio Manual of Uniform Traffic Control Devices (OMUTCD)
provides standards and guidelines for the use of traffic signs,
pavement markings, traffic signals, and other traffic control
devices in our state. The Manual applies to all roads open to
public travel in Ohio.
Traffic signs are addressed in Part 2 of the OMUTCD. Use of the
One-Direction Large Arrow sign is discussed in Section 2C.12
from Chapter 2C – Warning Signs and Object Markers.
Section 2C.12 One-Direction Large Arrow Sign (W1-6)
Option:
A One-Direction Large Arrow (W1-6) sign (see Figure 2C-1) may be used either as a
supplement or alternative to Chevron Alignment signs in order to delineate a change in
horizontal alignment (see Figure 2C-2). [ See page 2. ]
A One-Direction Large Arrow (W1-6) sign may be used
on the far side of a T-intersection, facing traffic on the
stem approach, to warn drivers that a through movement
is not physically possible where the intersected road is for
one-way traffic, or where turns are restricted to one
direction.
A One-Direction Large Arrow (W1-6) sign may be used
to supplement a Turn or Reverse Turn sign (see Figure
2C-2) to emphasize the abrupt curvature.
Standard:
The One-Direction Large Arrow sign shall be a horizontal rectangle with an arrow
pointing to the left or right.
The use of the One-Direction Large Arrow sign shall be in accordance with the information
shown in Table 2C-5. [ See page 3. ]
If used, the One-Direction Large Arrow sign shall be installed on the outside of a turn or
curve in line with and at approximately a right angle to approaching traffic.
The One-Direction Large Arrow sign shall not be used where there is no alignment change
in the direction of travel, such as at the beginnings and ends of medians or at center piers.
The One-Direction Large Arrow sign directing traffic to the right shall not be used in the
central island of a roundabout.
One-Direction Large Arrow Sign
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Guidance:
If used, the One-Direction Large Arrow sign should be visible for a sufficient distance to provide
the road user with adequate time to react to the change in alignment.
Support:
See Section 2C.47 for information about the Two-Direction Large Arrow Sign.
For Additional Information . . . Please refer to Chapter 2C of OMUTCD Part 2 for
additional information regarding use of the One-
Direction Large Arrow sign and other Horizontal
Alignment Warning Signs.
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As part of the Ohio LTAP Center’s Route of
Navigation (RON) Educational Series, several
other Technical Updates relating to signage
topics, such as Use of Horizontal Alignment
Warning Signs, are also available for general
reference.
“Who can I call if I have questions?” Questions about traffic signs may be directed to Jim Roth, P.E.,
Signing Engineer with ODOT’s Office of Traffic Operations, at (614)
752-0438. Assistance may also be available from Traffic
Engineering staff at the ODOT District Office in your area, or from
your County Engineer’s Office.
“How can I access the OMUTCD?” The 2012 Edition of the OMUTCD is available online for viewing
or downloading (free of charge), at:
www.dot.state.oh.us/omutcd. Printed copies are also available.
The Manual is provided free to government agencies, local
jurisdictions, schools and public libraries; to others there will
be a charge. The cost is $34.50 plus shipping and tax. Requests
should be directed to ODOT’s Office of Contracts at 1-800-459-
3778 or 614-466-3778.
DISCLAIMER: This RON Technical Update is provided for purposes of general information only. This is
not a primary technical or legal authority, and should not be relied upon as such. Interested persons
should refer to the source publications referenced herein. Please note also that information contained
in this document could become outdated or obsolete over time.