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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.