Transcript Office of Traffic, Safety, and Operations Application Guidelines Regulatory Signs Signing Plan Design (At-Grade) June 20, 2012

Office of Traffic, Safety, and Operations
Application Guidelines
Regulatory Signs
Signing Plan Design (At-Grade)
June 20, 2012
Office of Traffic, Safety, and Operations
Application of Regulatory Signs
MN MUTCD 2B.1
– Shall be used to inform road users of
selected traffic laws or regulations and
indicate the applicability of legal
requirements.
– Shall be installed at or near where the
regulations apply.
– Shall be installed to provide adequate
visibility and legibility in order to obtain
compliance
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Office of Traffic, Safety, and Operations
6-5.01 Purpose
 Generally, the only regulatory sign
applications that are discussed in
this Section [of the TEM] are those
which:
1. Are not specifically addressed in the MN
MUTCD; or
2. Provide additional guidance to that given in the
MN MUTCD on application, location, and usage
of certain types of regulatory signs; or
3. Establish procedures relating to engineering
and traffic investigation requirements for
certain regulatory signs.
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Office of Traffic, Safety, and Operations
6-5.05 Bypass Lane
 See Figure 6.17 for typical signing
 Installed in accordance with:
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T-intersection, 30” x 30” BYPASS lane at
beginning of
Four-Leg, 30” x 30” BYPASS & TURN LANE
sign installed at beginning of taper
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Office of Traffic, Safety, and Operations
6-5.05 Bypass Lane
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Office of Traffic, Safety, and Operations
6-5.08 ONE WAY Sign
1. 36" x 12"
– The standard size for conventional highways.
– Install it above the 30" x 30“ and the 36" x 36" STOP
signs and either independently or on traffic signal
poles or pedestals at signalized intersections.
2. 48” x 18”
– Above 36” x 36” STOP signs on all city, township, or
county roads and conventional highways intersecting
expressways
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Office of Traffic, Safety, and Operations
ONE WAY Sign Placement
MN MUTCD 2B.40
– Unsignalized intersections
•
Near right and far left corners
– Signalized intersections
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•
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Near the signal faces
On the signal poles
On the mast arm or span wire
Or at same locations as unsignalized ints
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Office of Traffic, Safety, and Operations
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Office of Traffic, Safety, and Operations
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Office of Traffic, Safety, and Operations
6-5.02 Typical Sign Placement
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Office of Traffic, Safety, and Operations
6-5.02 Typical Sign Placement
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Office of Traffic, Safety, and Operations
6-5.02 Typical Sign Placement
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Office of Traffic, Safety, and Operations
DO NOT ENTER Sign
 MN MUTCD 2B.37
–
–
–
If used, this sign should be placed directly in view
of a road user at the point where a road user
could wrongly enter a restricted roadway
If the sign would be visible to traffic to which it
does not apply, the sign should be turned or
shielded from the view of that traffic.
A second sign on the left side of the roadway may
be used, particularly where traffic approaches
from an intersecting roadway
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Office of Traffic, Safety, and Operations
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WRONG WAY Sign
 MN MUTCD 2B.38
– May be used as a supplement to the DO
NOT ENTER sign
– If used, should be placed at a location
farther from the crossroad than the DO
NOT ENTER sign
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Office of Traffic, Safety, and Operations
6-5.11 Speed Zone Signing
 Speed zone signs should be installed in
the most advantageous locations to
promote driver compliance
– Speed limit signs shall be placed at the terminal
points of each speed zone
– When entering a lower speed zone, the first speed
limit sign shall be one size larger than the
supplemental lower speed zone signs.
– Supplemental speed limit signs for lower speed
zones may be placed at intervals approximately
equal to 60 seconds of travel time at the posted
speed.
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Office of Traffic, Safety, and Operations
6-5.11 Speed Zone Signing
– Signs should be posted near junctions that
are major traffic generators.
– Signs may be spaced closer in urban areas
due to numerous access points.
– Signs may be further apart in rural areas
where the character of the roadway remains
constant with fewer access points.
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Office of Traffic, Safety, and Operations
6-5.12 Stop Signs
– Primary Location
•
30” x 30”
– Install on all two-lane, two-way city, township, or
county roads
•
36” x 36”
– Freeway and expressway ramps
– Conventional highways
– City, township, or county road with more than one
through lane of approach to an intersection
– All two-lane, two-way county, city, or township roads
and conventional highways intersecting expressways
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Office of Traffic, Safety, and Operations
6-5.12 Stop Signs
– Additional Location (left side)
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Install on any road with more than one through
lane of approach to an intersection based on a
traffic engineering study.
Justification may be based on unusual roadway
geometrics, sight restrictions, or crash problems.
Sign size shall not exceed the size of the STOP
sign on the right side of the road.
30” x 30” minimum
Match right side sign size
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