1、Designation: D 6628 03Standard Specification forColor of Pavement Marking Materials1This standard is issued under the fixed designation D 6628; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in
2、parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the daytime and nighttimecolor of retroreflective pavement marking materials used fortraffic control lane markings and
3、 symbols on road surfaces. Itis intended to apply throughout the service life of the material.1.2 This specification applies to both painted and tape lines,including thermoplastic, epoxy and other types.1.3 This specification is not applicable to the testing, forquality control purposes, of marking
4、material without addeddrop-on beads.1.4 In addition, it does not describe requirements other thancolor such as retroreflectance.2. Referenced Documents2.1 ASTM Standards:D 4061 Test Method for Retroreflectance of HorizontalCoatings2D 6359 Specification for Minimum Retroreflectance ofNewly Applied Pa
5、vement Marking Using Portable-Hand-Operated Instruments3E 284 Terminology of Appearance2E 308 Practice for Computing the Colors of Objects byUsing the CIE System2E 808 Practice for Describing Retroreflection2E 811 Practice for Measuring Colorimetric Characteristicsof Retroreflectors Under Nighttime
6、Conditions2E 1349 Test Method for Reflectance Factor and Color bySpectrophotometry Using Bidirectional Geometry22.2 CIE Publications:No. 15.2 Colorimetry4No. 39.2 Recommendations for Surface Colours for VisualSignalling43. Terminology3.1 Definitions:3.1.1 Definitions of appearance terms in Terminolo
7、gy E 284are applicable to this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 pavement marking structured materials a structuredroad marking has faces or edges in a regular or random patternthat are tilted towards the direction of traffic in order toenhance retroreflection in
8、 wet or rainy conditions or to produceacoustic or vibrational effects by the passage of wheels, orboth.The pattern can be produced by non-uniform applicationof material in the liquid state, by reworking the surface ofapplied material while still liquid, or by other suitable means.4. Significance and
9、 Use4.1 This specification is intended for use during the lifetimeof the retroreflective pavement marking on the road surface.Specifications for characteristics other than color are found inother ASTM documents.5. Performance Requirements5.1 Chromaticity LimitsThe material must plot within thebounda
10、ries described by the four corner points listed in Tables1 and 2 when measured in accordance with the test methods inSection 7.5.1.1 Table 1Daytime (x,y) chromaticity coordinates ofthe corners of the regions for the colors of white, yellow, blueand red pavement markings.5.1.2 Table 2Nighttime (x,y)
11、chromaticity coordinates ofthe corners of the regions for the colors of white and yellowpavement markings.5.1.3 Chromaticity and Retroreflectance The third dimen-sion of the perceived appearance of the road marking at nightis the retroreflectance. This quantity is specified in other ASTMdocuments on
12、 pavement markings and is not part of pavementmarking nighttime color specification. Research has shown thatthe nighttime color as specified by chromaticity is sufficientand adequate for the color naming of the material as viewedunder nighttime conditions.5.2 Daytime Lightness Limits (Y Tristimulus
13、Coordinate)The lightness limits shall conform to Table 3. (The 45/0 and0/45 geometry is the current standard practice for thesemeasurements.NOTE 1Daytime luminance factor testing of pavement markingsexcludes structured materials. They should be tested at the viewing angle1This specification is under
14、 the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.38 onHighway Traffic Control Materials.Current edition approved Jan. 10, 2003. Published April 2003. Originallyapproved in 2001. Last previous edition approved in 2001 as D 6628-0
15、1.2Annual Book of ASTM Standards, Vol 06.01.3Annual Book of ASTM Standards, Vol 04.03.4Available from USNC-CIE Publications Office, TLA Lighting Consultants,Inc., 7 Pond Street, Salem, MA 01970.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, Unite
16、d States.encountered in usage using diffuse illumination and 87.71 viewing angle,which is not covered in this standard.6. Specimen Preparation6.1 The test specimen shall be measured mounted on a flattest panel with a minimum test area of 0.1 m2in size. Typicaltest panels are 100 by 1000 mm.7. Test M
17、ethods7.1 Sample ConditioningFor new material conditioning,see Specification D 6359. For in-service testing, sample shouldbe free of dirt or other obvious contamination.7.2 Daytime ColorDaytime color shall be measured inaccordance with Test Method E 1349, using 45/0 (0/45) geom-etry, CIE illuminant
18、D65 and the 1931 CIE 2 standardobserver. (See Annex A1 for correction factors when usingilluminant C).7.3 Nighttime ColorThe measurement of nighttime chro-maticity shall be in accordance with Test Method E 811 usingthe geometric tolerance and sample positioning (includingangle setting techniques) as
19、 described in Test Method D 4061.NOTE 2The referenced nighttime color test method is primarily alaboratory procedure, and may not be convenient for use in the field forthe measurement of material in service. More convenient field testinstruments complying with this test method are expected to be ava
20、ilablein the near future.8. Keywords8.1 pavement marking; retroreflective materialsTABLE 1 Daytime ColorNOTE 1Daytime, Geometry 45/0 (0/45), CIE illuminant D65 andthe CIE 1931 (2) standard observer.Color Daytime Chromaticity Coordinates (Corner Points)1234xyxyxyxyWhite 0.355 0.355 0.305 0.305 0.285
21、0.325 0.335 0.375Yellow 0.560 0.440 0.490 0.510 0.420 0.440 0.460 0.400Red 0.480 0.300 0.690 0.315 0.620 0.380 0.480 0.360Blue 0.105 0.100 0.220 0.180 0.200 0.260 0.060 0.220TABLE 2 Nighttime ColorNOTE 1Nighttime, Geometry observation angle of 1.05 andentrance angle of 88.76. CIE illuminant A and th
22、e CIE 1931 (2) standardobserver.Color Nighttime Chromaticity Coordinates (Corner Points)1234xyxyxyxyWhite 0.480 0.410 0.430 0.380 0.405 0.405 0.455 0.435Yellow 0.575 0.425 0.508 0.415 0.473 0.453 0.510 0.490FIG. 1 Daytime Chromaticity of Pavement MarkingsFIG. 2 Nighttime Chromaticity of Pavement Mar
23、kingsTABLE 3 Luminance Factor, Cap YAWith Glass BeadsColor Y YMinimum MaximumWhite 35 . . .Yellow 25 . . .Red 6 15Blue 5 14AThe following in-service daytime luminance factor limits (tristimulus value Yexpressed as a percent) apply when measured with 45/0 (0/45) geometry andilluminant D65 using the 1
24、931 CIE 2 standard observer.D6628032ANNEX(Mandatory Information)A1. CHANGE OF ILLUMINANT FACTORSA1.1 The correction factors given in Table A1.1 changemeasurements made using illuminant C to approximate mea-surements made using illuminant D65.ASTM International takes no position respecting the validi
25、ty of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subjec
26、t to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarte
27、rs. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard
28、is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or service
29、astm.org (e-mail); or through the ASTM website(www.astm.org).TABLE A1.1 Correction FactorsNOTE 1For ExampleA blue sample which measured (x, y, Y) =(0.0150, 0.150, 5.0) using illuminant C would be converted to (0.149,0.158, 5.0) to provide the result using illuminant D65.Color x y YWhite +0.003 +0.014 0.00Yellow +0.001 +0.002 0.00Red 0.000 +0.001 0.00Blue 0.001 +0.008 0.00D6628033
