Chapter 5A. General
Section 5A.01 Function
Support:
At some locations on lowvolume roads, the use of traffic control
devices might be needed to provide the road user limited, but essential,
information regarding regulation, guidance, and warning.
Other Parts of this Manual contain criteria applicable
to all lowvolume roads; however, Part 5 specifically supplements
and references the criteria for traffic control devices commonly
used on lowvolume roads.
Standard:
A lowvolume road shall be defined for this Part of the Manual as
follows:
 A lowvolume road shall be a facility lying outside of builtup
areas of Cities, towns, and communities, and it shall have a
traffic volume of less than 400 AADT.
 A lowvolume road shall not be a freeway, expressway, interchange
ramp, freeway service road, or a road on a designated State
highway system. In terms of highway classification, it shall
be a variation of a conventional road or a special purpose road
as defined in Section
2A.01.
 A lowvolume road shall be classified as either paved or unpaved.
Support:
Lowvolume roads typically include farmtomarket, recreational,
resource management and development, and local roads.
Guidance:
The needs of unfamiliar road users for occasional, recreational,
and commercial transportation purposes should be considered.
Section 5A.02 Application
Support:
It is possible, in many cases, to provide essential information
to road users on lowvolume roads with a limited number of traffic
control devices. The focus might be on devices that:
 Warn of conditions not normally encountered;
 Prohibit unsafe movements; or
 Provide minimal destination guidance.
As with other roads, the application of traffic
control devices on lowvolume roads is based on engineering judgment
or studies.
Standard:
The criteria contained in Part 5 shall not prohibit the installation
nor the full application of traffic control devices on a lowvolume
road where conditions justify their use.
Guidance:
Additional traffic control devices and criteria contained in other
Parts of the Manual should be considered for use on lowvolume roads.
Section 5A.03 Design
Standard:
Traffic control devices for use on lowvolume roads shall be designed
in accordance with the criteria contained in Part 5, and where required,
in other applicable Parts of this Manual.
The typical sizes for signs installed on lowvolume
roads shall be as shown in Table 5A1. The Minimum sign sizes shall
only be used on lowvolume roads where the 85^{th}percentile
speed or posted speed limit is less than 60 km/h (35 mph).
All signs shall be retroreflective or illuminated
to show the same shape and similar color both day and night, unless
specifically stated otherwise in other applicable Parts of this
Manual. The requirements for sign illumination shall not be considered
to be satisfied by street, highway, or strobe lighting.
All markings shall be visible at night and shall
be retroreflective unless ambient illumination provides adequate
visibility of the markings.
Table 5A1. Minimum Sign Sizes
on LowVolume Roads
Sign 
MUTCD
Code 
Section 
Sign
Sizes
(Millimeters ) 
Typical 
Minimum 
Oversized 
Stop 
R11 
5B.02 
750 x 750
(30 x 30) 
— 
900 x 900
(36 x 36) 
Yield 
R12 
5B.02 
750 x 750 x 750
(30 x 30 x 30) 
— 
900 x 900 x 900
(36 x 36 x 36) 
Speed Limit (English) 
R21 
5B.03 
600 x 750
(24 x 30) 
450 x 600
(18 x 24) 
900 x 1200
(36 x 48) 
Speed Limit (Metric) 
R21 
5B.03 
600 x 900
(24 x 36) 
450 x 750
(18 x 30) 
900 x 1350
(36 x 54) 
Do Not Pass 
R41 
5B.04 
600 x 750
(24 x 30) 
450 x 600
(18 x 24) 
900 x 1200
(36 x 48) 
Pass With Care 
R42 
5B.04 
600 x 750
(24 x 30) 
450 x 600
(18 x 24) 
900 x 1200
(36 x 48) 
Keep Right 
R47 
5B.04 
600 x 750
(24 x 30) 
450 x 600
(18 x 24) 
900 x 1200
(36 x 48) 
Do Not Enter 
R51 
5B.04 
750 x 750
(30 x 30) 
— 
900 x 900
(36 x 36) 
No Trucks 
R52 
5B.04 
600 x 600
(24 x 24) 
— 
750 x 750
(30 x 30) 
One Way 
R62 
5B.04 
450 x 600
(18 x 24) 
— 
600 x 750
(24 x 30) 
No Parking 
R83 
5B.05 
450 x 600
(18 x 24) 
— 
600 x 750
(24 x 30) 
No Parking (symbol) 
R83a 
5B.05 
600 x 600
(24 x 24) 
450 x 450
(18 x 18) 
750 x 750
(30 x 30) 
No Parking (plaque) 
R83c,3d 
5B.05 
600 x 450
(24 x 18) 
450 x 300
(18 x 12) 
750 x 600
(30 x 24) 
Road Closed 
R112 
5B.04 
1200 x 750
(48 x 30) 
— 
— 
Road Closed, Local Traffic Only 
R113a 
5B.04 
1500 x 750
(60 x 30) 
— 
— 
Bridge Out, Local Traffic Only 
R113b 
5B.04 
1500 x 750
(60 x 30) 
— 
— 
Weight Limit 
R121 
5B.04 
600 x 750
(24 x 30) 
— 
900 x 1200
(36 x 48) 
Railroad Crossbuck 
R151 
5F.02 
1200 x 225
(48 x 9) 
— 
— 
Number of Tracks 
R152 
5F.02 
675 x 450
(27 x 18) 
— 
— 
Horizontal Alignment 
W11,2,3,4,5 
5C.02 
600 x 600
(24 x 24) 
— 
750 x 750
(30 x 30) 
OneDirection Large Arrow 
W16 
5C.02 
900 x 450
(36 x 18) 
— 
1200 x 600
(48 x 24) 
TwoDirection Large Arrow 
W17 
5C.02 
900 x 450
(36 x 18) 
— 
1200 x 600
(48 x 24) 
Chevron Alignment 
W18 
5C.02 
300 x 450
(12 x 18) 
— 
450 x 600
(18 x 24) 
Intersection Warning 
W21,4,5 
5C.03 
600 x 600
(24 x 24) 
— 
750 x 750
(30 x 30) 
Stop Ahead 
W31 
5C.04 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Yield Ahead 
W32 
5C.04 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Be Prepared to Stop 
W34 
5G.05 
900 x 900
(36 x 36) 
750 x 750
(30 x 30) 
1200 x 1200
(48 x 48) 
Narrow Bridge 
W52 
5C.05 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
One Lane Bridge 
W53 
5C.06

750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Hill 
W71, 1a 
5C.07 
600 x 600
(24 x 24) 
— 
750 x 750
(30 x 30) 
XX % Grade 
W73 
5C.07 
600 x 450
(24 x 18) 
— 
750 x 600
(30 x 24) 
Next XX km (Miles) 
W73a 
5C.09 
600 x 450
(24 x 18) 
— 
750 x 600
(30 x 24) 
Pavement Ends 
W83 
5C.08 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Loose Gravel 
W87 
5G.05 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Railroad Advance Warning 
W101 
5F.03 
600 Dia.
(24 Dia.) 
450 Dia.
(18 Dia.) 
750 Dia.
(30 Dia.) 
Crossing Warning 
W102,3,4 
5F.03 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Entering/Crossing 
W11 series 
5C.09 
600 x 600
(24 x 24) 
— 
750 x 750
(30 x 30) 
Advisory Speed (plaque) 
W131 
5C.10 
450 x 450
(18 x 18) 
— 
600 x 600
(24 x 24) 
Dead End/No Outlet 
W141,2 
5C.11 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Dead End/No Outlet 
W141a,2a 
5C.11 
900 x 225
(36 x 9 ) 
600 x 150
(24 x 6) 
— 
No Passing Zone (pennant) 
W143 
5G.05 
750 x 1000 x 1000
(30 x 40 x 40) 
600 x 900 x 900
(24 x 36 x 36) 
900 x 1200 x
1200
(36 x 48 x 48) 
Supplemental Distance (plaque) 
W162 
5C.09 
600 x 450
(24 x 18) 
450 x 300
(18 x 12) 
750 x 600
(30 x 24) 
Ahead (plaque) 
W169p 
5C.11 
600 x 300
(24 x 12) 
— 
750 x 450
(30 x 18) 
No Traffic Signs 
W181 
5C.12 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Road Work XX m (ft) 
W201 
5G.05 
900 x 900
(36 x 36) 
750 x 750
(30 x 30) 
1200 x 1200
(48 x 48) 
Flagger 
W207a 
5G.05 
900 x 900
(36 x 36) 
750 x 750
(30 x 30) 
1200 x 1200
(48 x 48) 
Workers 
W211a 
5G.05 
900 x 900
(36 x 36) 
750 x 750
(30 x 30) 
1200 x 1200
(48 x 48) 
Fresh Oil 
W212 
5G.05 
600 x 600
(24 x 24) 
— 
750 x 750
(30 x 30) 
Road Machinery Ahead 
W213 
5G.05 
600 x 600
(24 x 24) 
— 
750 x 750
(30 x 30) 
Shoulder Work 
W215 
5G.05 
600 x 600
(24 x 24) 
— 
750 x 750
(30 x 30) 
Survey Crew 
W216 
5G.05 
750 x 750
(30 x 30) 
600 x 600
(24 x 24) 
900 x 900
(36 x 36) 
Notes:
 Larger signs may be used when appropriate
 Dimensions are shown in millimeters followed by inches in
parentheses and are shown as width x height
Guidance:
Oversized sign sizes should be used where engineering judgment indicates
a need based on high vehicle operating speeds, driver expectancy,
traffic operations, or roadway conditions.
Section 5A.04 Placement
Standard:
The traffic control devices used on lowvolume roads shall be placed
and positioned in accordance with the criteria contained in Part
5 and, where necessary, in accordance with the lateral, longitudinal,
and vertical placement criteria contained in Part
2 and other applicable Sections of this Manual.
Guidance:
The placement of warning signs should conform to the guidance contained
in Section 2C.05 and
other applicable Sections of this Manual.
Option:
A lateral offset of not less than 0.6 m (2 ft) from the roadway
edge to the roadside edge of a sign may be used where roadside features
such as terrain, shrubbery, and/or trees prevent lateral placement
in accordance with Section
2A.19.
Standard:
If located within a clear zone, groundmounted sign supports shall
be yielding, breakaway, or shielded with a longitudinal barrier
or crash cushion as required in Section 2A.19.
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