do_010_s2011 item 620 chevron signs.pdf

8/16/2019 DO_010_S2011 item 620 Chevron Signs.pdf

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Of PAR I Mt:N r onvt:x

No.~ Seriesof 2011

ANNEX Page 1 of 5

lTEM 620 - )WVVH STANHAl


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OEPAlt IMt:.N r O:W::-JlNo.~ Seriesof 2011

ANNEX Page 2 of 5

Advisory Speed Limit

(kph)

Radius

(m)

Chevron Spacing

(m)

:S 20 :S 60 12

30-50 60-120 24

~~~-~-~-~~--------~~------------J

60-70 120-210 36

80-90 210-300 48

>90 > 100 60

The above spacing distances shall apply to points within the curve. Approach and

departure spacing, distances s!!,tll be twice {flose ShOWll ahovc. (See Figure 3 fOI sample

illustration of the above data)

620.2.3 Types of Chevron Sig ••s


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D£PAA fMl:.1'\I f U;(VLil

No.~ Seriesof 2011

ANNEX Page 3 of 5

620.3.2

The reflective sheeting shall be weather resistant and show no appreciable cracking,

blistering, cl


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O EPA;{ IM I:.N f O:Wt.ll

No.~ Seriesof 2011

ANNEX Page 4 of 5

Blue I

~~~~~::~~:~~~~~~~-G~een~--l-Fluorescent Orange IFor 45° Entrance Angle'

"Thite I J 00Yellow ._____ [75

Red __~_________ 20

r~:-::- I ~ g~~~~~::~:~:~_;~~~;-(ile{'JI..- . - - - = = r - ~ ~ ~- - - - -

All units are expressed in terms of cd/lux/sq.m.

i-- + ~ ~ i--f -~ t~ -64 I 45 I 14I 50 I

37

10

51.5

30.-

40

J S

25

19---_._-.~

5- --_ .. _-----_._~--

30.8

15

20

7

I

Entrance Angle The angle from

the illumination axis to the retro-retlector axis. Thereflector axis is an axis perpendicular to the retro-reflective surface.

: <Observation Angle· 'lhe angle between the illumination axis and observation axis.

620.3.3 Post and Attachments

it shall CDllil.l! HI i.o ilH:~


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OEPARTMfN r OROtR No.~ Seriesof 2011

ANNEX Page 5 of 5

620.4 Coustructien i.tt:{lutn,>uh;UtS

620.4.1 ":J.("avatiofland 8add'lling

11 shall conform to !lIe lequilernenls of Subsection (,(Y


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-------------------- ---------------------_. _ _ ._--------------'~-_.-----:_,--,-------~-------------

!3-51'"1r'l¢ G . I. B O L T S '.lITH

t

[

' NUTS AND VASHER300[')1" l x 3001'"11'"1cm~c. POST J I

?1i12'X ~' G .I, rLAT EAR

7Si""" ¢ c.r. PIP E P OS T I ~ i -i .»

P AIN TE D V IT H R ErL EC TO R IZ ED ~ ~ - = l : 3 J ) - ' I~'~~'~ .SUt~SH~t~E YELLOV VITH RED I < V : ' _ 7 _ ~ 13-2f"'f"IC c .r. BOLTS V1TH" -,6 Q ,- -- lNUTS AND VASHER

,0 ~\'


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--Chevrons

.>

PCCP~

\ _---- Edge of Pavement

FIGURE 2 - Showing that the spacing of the Chevron Signs allow the driver to see at least three (3) signs in

view while negotiatin~ the curve until the change in alignment eliminates the need for the signs

as contained in the 4 paragraph of Section 620.2.2, Design for Item 620 - Chevron Signs


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Chevrons

-----

--\~- t

Speed Limit of 70 kph

R = Radius of Curvature = 150 m

FIGURE 3 - The recommended spacing distances for the Chevron Signs within the curve and approach/

departure of the road as shown in Table 620.1 - Recommended spacing for Chevron Signs

and as contained in the e " paragraph of Section 620.2.2, Design for Item 620 - Chevron Signs

do_010_s2011 item 620 chevron signs.pdf

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