tc212 (2).pdf
PDF 187 KB Posted
- Solicitation number
- 645-RFB-2407-2026
- Issued by
- Johnson County, Iowa
About this file
This is a Standard Road Plan document issued by the Iowa Department of Transportation for Traffic Control with Flaggers (TC-212), applicable to spot location lane closures on state highways. The plan provides detailed specifications for traffic control setup during road work activities, including sign placement, barricade positioning, and flagger deployment procedures. The document outlines advance signing distances (F and G) that vary based on speed limits, ranging from 250 feet to 500 feet minimum distances depending on whether the posted speed limit is 35 mph or less, 40-45 mph, or 50 mph or greater, with maximum combined distances reaching 3,500-4,000 feet. Typical applications include crack sealing, surface patching, joint sealing, pavement repair, guardrail connections, and bridge repair work during daylight hours only. The plan specifies when a second flagger is required, traffic flow management procedures, parking restrictions within 500 feet of work areas, and requirements for Type III barricades and amber lighting for vehicle positioning.
The document establishes mandatory traffic control measures for secondary road intersections with primary roads and bridge work locations where signals are not required. Key operational requirements include ensuring free-flowing traffic in open lanes, positioning the first vehicle stop in no-passing zones, and maintaining proper flagger sight lines of approaching traffic. The plan notes that advance signing distances (F and G values) may be varied within permit limits but should remain near minimum values unless excessive traffic delays are encountered, or when work areas have restricted sight distance. The document was revised on April 18, 2023, to add speed limit notes and formatted a speed limit reference table to clarify application standards across different regulatory speed zones.
View the file
Other files
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
F
G
LEGEND
A
150' to 300'
100' Maximum30' to 50'AA
END
ROAD WORK
48" x 24"
G20-2A
ROAD
WORK
AHEAD
48" x 48"
W20-1
48" x 48"
W20-4
ONE LANE
ROAD
AHEAD
48" x 48"
W20-7A
48" x 48"
W20-7A
48" x 48"
W20-4
ONE LANE
ROAD
AHEAD
ROAD
WORK
AHEAD
48" x 48"
W20-1
END
ROAD WORK
48" x 24"
G20-2A
Traffic Control
Flaggers
Possible Contract Items:
Traffic Sign
Flagger
Work Area
Type III Barricade
Direction of Traffic
DO NOT USE ON PRIMARY ROADWAYS
value at the minimum and the other value at its maximum.
the table. Maximum movement can be achieved by setting one F or G advance signing, F and G distances may be varied within the limits of permits. However, to be able to move the work area without moving the
F and G distances are to remain as near minimum values as work
Excessive traffic delays are encountered.
distance, such as a No Passing zone, or mile or the work site is in an area of restricted sight4 than
The flagger's veiw of approaching traffic in the open lane is less
Provide a second flagger if:
substituted for the Type III barricade.
A vehicle with an amber revolving light or amber strobe light may be other vehicles.
closed lane from the postion shown, then cross the traffic lane to stop
Ensure traffic in the open lane flows freely. Stop the first vehicle in the
No parking on opposite shoulder within 500 feet of work area.
Crack sealing
Surface patching
PR joints
Joint sealing
Sawing for ful depth patch
Secondary road intersections with Primary road.
Guardrail connections at bridge.
Bridge repair when signals are not required.
Pavment repair
Use only during daylight hours. Typical applications include:
TC-212
REVISION
4-18-23
SHEET 1 of 1
REVISIONS: Added speed limit note. Formatted speed limit table.
APPROVED BY DESIGN METHODS ENGINEER
STANDARD ROAD PLAN
WITH FLAGGERS
SPOT LOCATION LANE CLOSURE
(mph)*
SPEED LIMIT
* Speed Limit refers to regulatory speed limit before road work.
A F and G Max.
F + G
Range
500'
350'
250' 250'-3250'
350'-3350'
500'-3500' 4000'
3700'
3500'35 or less
40 - 45
50 or greater tc212
File details come from the government source that posted it. Updated .