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6F.01 – Types of Devices Support: FHWA policy that work zone devices meet NCHRP Report 350 Section 6F.02 General Characteristics of Signs New table format, “Table 6F-1 Sizes of Temporary Traffic Control Signs” showing the sizes of temporary traffic control warning signs is added

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6f 01 types of devices l.jpg
6F.01 – Types of Devices

Support:

FHWA policy that work zone devices meet NCHRP Report 350


Section 6f 02 general characteristics of signs l.jpg
Section 6F.02 General Characteristics of Signs

New table format, “Table 6F-1 Sizes of Temporary Traffic Control Signs” showing the sizes of temporary traffic control warning signs is added


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Section 6F.03Sign Placement

Support:

“If alterations are made to specific traffic control device supports that have been successfully crash tested in accordance with NCHRP Report 350, the altered supports might not be considered to be crashworthy.”


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Section 6F.14 Special Regulatory Signs

Support:

signs to enhance speed enforcement


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Section 6F.15 Warning Sign Function, Design and Application

Exit and Detour signs included in new Figure 6F-5


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Section 6F.15 Warning Sign Function, Design and Application

Speed Reduction Signs design changed from Regulatory to Warning.

Sign sizes removed from Figure


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Section 6F.40TURN OFF 2-WAY RADIO AND CELL PHONE Sign (W22-2)

CELL added to sign message


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Section 6F.42 Shoulder Signs (W8-4, W8-9, W8-9a)

Option:

Shoulder drop-offs < 75mm (3”)

Guidance:

Shoulder drop-offs > 75 mm (3 in)


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Section 6F.45Double Reverse Curve Signs (W24 Series)

Standard - # of lanes illustrated = # of thru lanes available


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6F.47Special Warning signs

Option: may be used based on engineering judgment

Guidance: conform with color, shape, alphabet and series general requirements


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Section 6F.48 Advisory Speed Plaque (W13-1)

Option – metric plaque

Standard – only used with Warning signs


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Section 6F.52END ROAD WORK Sign (G20-2)

Guidance: place near end of termination area


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Section 6F.53Detour Signs and Markers (M4-8, M4-8a, M4-8b, M4-9, M4-9a, M4-9b, M4-9c, and M4-10)

Option: Fluorescent pink for Incident management


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Section 6F.55Portable Changeable Message Signs

Guidance:

250mm/10in min

450mm/18in min


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Section 6F.55Portable Changeable Message Signs

Guidance

3 Seconds Min

per Phase


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Section 6F.55Portable Changeable Message Signs

Standard

5 ft Rural, 7 ft Urban to bottom of PCMS


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Section 6F.56Arrow Panels

Guidance:

Lane closure for: multilane roadways, high speed, limited sight distance, unexpected conditions

.

Chevron Mode Added


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Section 6F.56Arrow Panels

Guidance:

Arrow panel at start of taper


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Section 6F.56Arrow Panels

Used to:

Close lanes –OK

Shift Traffic-

NO


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Figure 6F.58Channelizing Devices

Figure 6F-7

Lumber barricades have not passed NCHRP 350 crashworthiness testing.


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Section 6F.59Cones

Standard added on cones greater than 36” in height

Minimum of 4 retroreflective bands

Phase-in target compliance date 5 years


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Section 6F.63Type I, II, or III Barricades

2nd Guidance paragraph replacing Standard

Ballast shall not protrude into Pedestrian Path


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Section 6F.66Longitudinal Channelizing Barricades

Guidance: should conform to the general characteristics established for the devices described in Chapter 6F re:

- size

- color

- stripe pattern

- retroreflectivity

- placement.


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Section 6F.67Other Channelizing Devices.

New Section added

  • Optional device

  • Guidance: conform to other Sections in Chapter 6F re:

    • Size

    • Color

    • Stripe Pattern

    • Retroreflectivity

    • Placement


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Section 6F.68Detectable Edging for Pedestrians

New Section added:

Guidance:

  • Protrude min. 150 mm (6 in) above surface at top

  • Bottom of edging max. 62 mm (2.5 in) above surface

  • Continuous except gaps for turning or crossing


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Section 6F.69Temporary Raised Islands

Standard---Temp. Raised Islands at Pedestrian Crossings:

Opening or shortened to provide at least 1500 mm (60 in) wide ped pathway


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Section 6F.70Opposing Traffic Lane Divider

Standard:

DON’T placed across PEDESTRIAN CROSSINGS


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Section 6F.72Temporary Pavement Markings

Option:

Half-cycle lengths w/ min. 0.6 m (2 ft) stripes may be used on roadways w/ severe curvature for centerlines in passing zones and for lane lines.

For temporary situations of 3 calendar days or less, for a 2- or 3-lane road, no-passing zones may be identified by:

Guidance: if used, place as per Sections 2B.29, 2B.30, 2C.35


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Section 6F.75Lighting Devices

Guidance:

Max. spacing same as channelization devices


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Sections 6F.75Lighting Devices

Option---lights on maintenance vehicles for daylight maintenance operations


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Section 6F.76 Floodlights

Support:

General work: 50 lux (5 ft-candles)

Precision work: 216 lux (20 ft-candles)


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Section 6F.76Floodlights

Standard

Lighting Flagger Stations @ night

No Disabling Glare for Workers / Road Users


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Section 6F.78Warning Lights

Type D 360-degree Warning Lights


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Section 6F.80 Temporary Traffic Control Signals

Guidance---Use Engineering Judgment re: need for Ped signals or APS along Ped detour


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Section 6F.82 Crash Cushions

Standard:

Damaged crash cushions shall be promptly repaired or replaced.


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Section 6F.84Rumble Strips

Guidance---transverse rumble strips on roadway:

  • Not through ped crossings or on bike routes

  • Min. 1.2 m (4 ft) clear path at edge of roadway used by bikes

4’


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