DEAS 927: 2018
ICS 87.040
 
© EAC 2018                                                                                                                              First Edition 2018 
 DRAFT EAST AFRICAN STANDARD 
Road marking paints — Specification 
EAST AFRICAN COMMUNITY DEAS 927: 2018 
ii © EAC 2018 – All rights reserved
 Copyright notice 
This EAC document is copyright-protected by EAC. While the repr oduction of this document by 
participants in the EAC standards development process is permit ted without prior permission from EAC, 
neither this document nor any extract from it may be reproduced , stored or transmitted in any form for 
any other purpose without prior written permission from EAC. 
Requests for permission to reproduce this document for the purp ose of selling it should be addressed 
as shown below or to EAC’s mem ber body in the country of the re quester: 
© East African Community 2018 — All rights reserved 
East African Community  
P.O. Box 1096, 
Arusha 
Tanzania 
Tel: + 255 27 2162100 
Fax: + 255 27 2162190 
E-mail: eac@eachq.org 
       Web: www.eac-quality.net 
Reproduction for sales purposes may be subject to royalty payme nts or a licensing agreement. 
Violators may be prosecuted. 
 DEAS 927: 2018 
© EAC 2018 – All rights reserved  iii
 Foreword 
Development of the East African Standards has been necessitated  by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standardization, trade barriers that are encountered  when goods and services are exchanged 
within the Community will be removed.  
The Community has established an East African Standards Committ ee (EASC) mandated to develop and 
issue East African Standards (EAS).  The Committee is composed of representatives of the National 
Standards Bodies in Partner States, together with the represent atives from the public and private sector 
organizations in the community.  
East African Standards are developed through Technical Committe es that are representative of key 
stakeholders including government, academia, consumer groups, p rivate sector and other interested parties. 
Draft East African Standards are circulated to stakeholders thr ough the National Standards Bodies in the 
Partner States. The comments received are discussed and incorpo rated before finalization of standards, in 
accordance with the Principles and procedures for development o f East African Standards.  
East African Standards are subject to review, to keep pace with  technological advances. Users of the East 
African Standards are therefore expected to ensure that they al ways have the latest versions of the standards 
they are implementing .  
The committee responsible for this document is Technical Commit tee EASC/TC 070, Paints, varnishes and 
related products.   
Attention is drawn to the possibility that some of the elements  of this document may be subject of patent 
rights. EAC shall not be held responsible for identifying any o r all such patent rights. 
During the preparation of this Standard, reference was made to the following document: 
……………………………………………. 
Acknowledgement is hereby made for the assistance derived from this source. 
  DRAFT EAST AFRICAN S TANDARD DEAS 927: 2018
 
© EAC 2018 – All rights reserved 1
 Road marking paints — Specification  
1 Scope  
This Draft East African specifies requirements, methods of samp ling and test for solvent-borne and water-
borne paints for marking on bituminous or concrete surfaces. It  makes provision for white, yellow, black and 
any other colours as specified. 
2 Normative references  
The following documents are referred to in the text in such a w ay that some or all of their content constitutes 
requirements of this document. For dated references, only the e dition cited applies. For undated references, 
the latest edition of the refer enced document (including any am endments) applies. 
ISO 4618, Paints and varnishes — Terms and definitions 
ISO 6503 Paints and varnishes -- Determination of total lead -- Flame atomic absorption spectrometric method 
ISO 6504-3 , Paints and varnishes — Determination of hiding power — Part 3: Determination of contrast ratio 
of light coloured paints at a fixed spreading rate 
ISO 17132, Paints and varnishes — T-bend test 
ISO 3251, Paints varnishes and plastics — Determination of non- volatile matter content 
ISO 1514, Paints and varnishes — Standard panels for testing 
ISO 1518-1, Paints and varnishes — Determination of scratch resistance — Part 1: Constant-loading method 
ISO 1524 , Paints, varnishes and printing ink — Determination of fineness of grind 
ISO 15528 , Paints, varnishes and raw materials for paints and varnishes — Sampling 
ISO 3270, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and 
testing 
ISO 3856-6 Paints and varnishes -- Determination of "soluble" metal content -- Part 6: Determination of total 
chromium content of the liquid portion of the paint -- Flame atomic absorption spectrometric method 
ISO 9117-1:2009 Paints and varnishes -- Drying tests -- Part 1: Determination of through-dry state and 
through-dry time 
 
3 Terms and definitions  
For the purposes of this standard, the definitions given in ISO  4618 and the following shall apply: DEAS 927: 2018 
2 © EAC 2018 – All rights reserved
 3.1 
luminance factor  
the ratio of the luminance of a non-luminous body, under specif ied conditions of illumination and observation, 
to the luminance of a perfect reflecting diffuser receiving the  same illumination. 
3.2 
no pick-up time 
The period, determined by the procedure described in Annex C, b etween application of a paint and the 
moment when the paint just ceases to be removed by a simulated tire of a vehicle passing over the painted 
surface. 
3.3 
reflectorization  The application of small transparent glass beads on to a painte d surface before it has dried, to enable incident 
light to be reflected back in the general direction of the sour ce. 
3.4 
defective  
test sample or a container of the paint that fails in one or mo re respects to comply with the relevant 
requirements of this standard  
3.5 
lot  quantity of paint in containers  that bear the same batch identi fication, from one manufacturer and submitted at 
any one time for inspection and testing  
3.6 
reflectivity  
reflectance of a paint film of such thickness that any further increase in film thickness does not give further 
change in the reflectance  
3.7 
retro-reflective paints  
paints that have an enhanced night-time visibility, achieved by  the incorporation of suitable glass beads  
3.8 
standard atmosphere  
atmosphere contained in a test and conditioning enclosure, and that complies with the requirements of ISO 
3270. 
3.9 
bleeding 
is defined as the relative condition of discoloration manifeste d in traffic paint when applied to tar or asphaltic 
roads 
4 Types  
The paints shall be of the following types, as required:  
type 1: water-borne  
type 2: Solvent -borne DEAS 927: 2018 
© EAC 2018 – All rights reserved  3
 5 Requirements 
5.1 General requirements 
5.1.1 Condition in the container  
The paint shall show no evidence of; biological growth, corrosi on of the container, livering or hard settlement, 
and shall be free from lumps, foreign material or surface skins  that cannot be re-dissolved. Upon mixing the 
paint shall be returned to a smooth and homogeneous consistency , which is free from; gel structures, 
persistent foam or air bubbles. 
5.2 Specific requirements  
The paint shall meet the requirements specified in Table 1. 
Table 1 — Specific requirement s for road marking paints 
Sl. 
No. Characteristic Requirement Test 
method Water borne  Solvent borne 
White  Yellow Black Other 
colours White Yellow Black Other 
colours 
i Total Lead Content, 
max 90 ppm ISO 
6503 
ii Luminance factor,%. 83,min. 48-
52 Not 
applicable To be 
determined 83,min. 48-52 Not 
applicable To be 
determined Annexe 
B 
iii Hiding Power, %, 
min 
 90 80 ‒ ‒ 90 80 Not 
applicable To be 
determined ISO 
6504 
iv No Pick-up Time, 
minutes, max. 30 Annex 
C 
v Flexibility Shall comply ISO 
17132 
vi Resistance to 
Bleeding Shall comply Annexe 
E  
vii Resistance to diesel 
fuel Shall comply Annex 
F 
viii Resistance to salt 
solution Shall comply Annex 
G 
ix Solids content, 
%,m/m, min. 50 ISO 
3251 
x Fineness of 
dispersion,/Fineness 
of grind Hegman-
Type Gage,µm,max 25 ISO 
1524 
xi Drying 
time at 25 ˚C ± 
2 ˚C,hrs Hard 
drying  24, max ISO 
9117-1 
Surface 
drying 1-3 ISO 
9117-3 
xii Chromium, mg/kg in 
dried paints, max 5 ISO 
3856-6 DEAS 927: 2018 
4 © EAC 2018 – All rights reserved
 5.3 Road performance requirements  
5.3.1 General  
In addition to complying with the laboratory tests specified in  table 1, the paint shall comply with the 
appropriate performance requirements specified in this clause. 
The paint sample applied to the road surface for the purposes o f table 1  shall be in the same condition (e.g. 
not thinned) as the sample used for the laboratory tests . 
Details of the procedures for and control of road performance t ests are given in Annex H. 
NOTE Clause 5 gives requirements for the conduct of the road performance tri als and explains that the trials can only 
be carried out for white paints. 
5.3.2 Luminance Factor 
When the paint, applied to the road surface as described in H.2.6  and examined as described in H.2.7 , is 
tested as described in 8.3.2 , the luminance factor for the test area on each non-reflectori zed stripe shall be not 
lower than 70 per cent on the day of application of the paint a nd not lower than 60 per cent at each of the 
regular inspection intervals thereafter. 
5.3.3 Degree of Erosion 
When the paint, applied to the road surface as described in H.2.6 and examined in accordance with H2.7 , is 
tested as described in Annex J, the total wear index for the te st area on each stripe shall not exceed 35 % at 
each of the regular inspection intervals of six months. 
5.3.4 Spread of Markings  
When the paint, applied to the road surface as described in H.2.6 , is examined in accordance with H2.7 , the 
width of each non-reflectorized paint strips, measured between 600 mm and 900 mm from the near side kerb, 
shall not have increased, at each of the regular inspection int ervals, by more than 10 per cent of its initial 
value. 
5.4 Storage stability  
The paint, after storage at temperatures in the range 4 ˚C to 32˚C in unopened containers for not less than 12 
months from the date of dispatch by the manufacturer, shall com ply with table 1  
6 Road performance trials 
The procedures for the control of the testing of pavement marki ng paints for compliance with table 1 shall be 
carried out at a trial site under the direc tion of a supervisin g authority. 
Only white paints complying with table 1  are acceptable for road performance trials. However, provided that 
the formulation of a yellow or black paint differs from that of  a white paint in respect of the pigmenting 
ingredient only, the results of a trial on the white paints sha ll apply to the yellow or black paint complying with 
table 1  DEAS 927: 2018 
© EAC 2018 – All rights reserved  5
 7 Packaging and labelling 
7.1  Packaging 
The road marking paint shall be packaged in a suitable containe r that prevents it from deterioration during 
storage, transportation and normal handling. 
7.2  Labelling 
7.2.1  The labelling shall be either i n English, Kiswahili or French or in combination as agreed between the 
manufacturer and / or the supplier. Any other language is optio nal.  
7.2.2  Each container shall be legibly and indelibly marked with the following information. 
a) the words “ road marking paint; b) name and address of the manufacturer; 
c) net contents  in litres; 
d) type of paint e) date of manufacture 
f) best before date ; g) colour of the paint; 
h) instructions for use, disposal and safety requirements. 
i) batch number. 
 
8 Sampling 
Sampling shall be done in accordance with ISO 15528. 
 DEAS 927: 2018 
6 © EAC 2018 – All rights reserved
 Annex A 
(normative) 
Test panels 
A1 Materials, dimensions and preparation 
The test panels shall be of metal or glass and shall comply wit h ISO 1514. The test panels shall be flat and 
free from distortion and shall be free from visible ridges or c racks. 
Metal test panels shall be rectangular, 150 mm x 100 mm in area  and shall be prepared as described ISO 
1514.Glass test panels shall be 1 50 mm x 100 mm x 5 mm in size and shall be prepared by solvent cleaning. 
A2 Paint application 
Prepare the paint sample in accordance with A.3  Except where otherwise specified in this standard, apply the 
paint to the test panel to give a wet film thickness of 350 ± 3 5 µm, using shims and a doctor blade. Allow the 
panel to dry for 7 days in horizontal position at 23 ˚C± 2 ˚C and 50 % ± 5 % relative humidity, out of direct 
sunlight and with adequate protection from the deposit of dust.  
A3 Test conditions 
Except where otherwise specified in this standard, tests shall be carried out at 23 ˚± 2 ˚C and 50 % ± 5 % 
relative humidity. DEAS 927: 2018 
© EAC 2018 – All rights reserved  7
 Anne B 
(normative) 
 
Determination of luminance factor 
B1 Principle 
The principle of the method is photoelectric comparison of the luminance of the test paint relative to that of a 
perfect reflecting diffuser. In this standard, magnesium carbon ate or a white tile, calibrated against a perfect 
reflecting diffuser, is used as the reference surface.  
B2 Apparatus and materials 
B2.1 Light source, a tungsten lamp operating at a correlated colour temperature of  2 854 K in a photometer. 
B2.2  Photoelectric sell, having a spectral sensitivity closely matched to the CIE photop ic luminous 
efficiency function V(λ). 
B2.3  Magnesium carbonate block, calibrated against a perfect reflecting diffuser. Prepare a new  surface 
immediately before use. 
B2.4  Calibrated white reference tile, having a CIE value in the range 70 to 95, and a calibration aga inst a 
perfect reflecting diffuser traceable to a national accredited laboratory. 
B2.5  Glass test panel, as described in Annex A (for Method 1 only) 
B3 Procedure 
B3.1 Method 1: Test panels 
B3.1.1 Prepare the glass test panel ( B2.5 ) and apply the paint by the method described in Annex A. 
B3.1.2  Calibrate the apparatus with the light source ( B2.1 ), with the axis of the incident beam at 45˚ + 1˚ to 
the reference surface ( B2.3  or B2.4 ). Locate the photoelectric cell ( B2.2 ) such that the axis of the cell is at 90 
+1˚ to the illuminated reference surface. If using a magnesium carb onate block, calibrate on the mean of 
readings from three different areas. 
B3.1.3  Calculate the absolute value M by use of the appropriate calibration factor. 
B3.1.4 Measure the luminance of three different areas of the paint fil m using the same geometry as in B4. 
Calculate the mean luminance L. 
B3.2 Method 2: Road trials 
B3.2.1  Clean an area of each non-reflectorized paint stripe (prepared  as described in H2.6 ) at a distance of 
500 mm + 75 mm from the near side kerb, by the method described  in J2.1, and allow to dry. 
B3.2.2  Taking precautions to shield the photoelectric cell from stray  incident light, carry out the procedure 
described in B3.1.2 and B3.1.3 , but measure the luminance at only one location on the paint s tripe. Measure 
the luminance five times, rotating the cell through approximate ly 72˚ with minimal lateral displacement between 
each measurement. Calculate the mean L of the five measurements. DEAS 927: 2018 
8 © EAC 2018 – All rights reserved
 B4 Calculation 
Calculate the luminance factor as the ratio L/M and express it as a percentage. 
B5 Test report 
The test report shall state the luminance factor L/M to the nearest 1 %. 
 
 DEAS 927: 2018 
© EAC 2018 – All rights reserved  9
 Annex C 
(normative) 
No pick-up time test 
C1 Principle 
Two rubber rings, simulating the tyres of a vehicle, are rolled  over a test panel 15 min after application of the 
paint. The surfaces of the rings are examined for pick-up of th e paint. 
C2 Apparatus and materials 
C2.1 Steel cylinder , fitted with two replaceable O-rings (C2.2) and with a steel rod  serving as an axle. The 
total mass of the assembly, complete with O-rings, shall be 5.4 0 kg + 0.03 kg. The dimensions of the steel 
cylinder shall be in accordance with Figure C.1, subject to a t olerance of + 0.1 mm. 
C2.2  O-rings, made of synthetic rubber of rubber-like material. The dimension s of the O-rings shall be: 
a) Outside diameter: 104.8 mm; 
b) Inside diameter:  85.7 mm; 
c) Cross section:  9.5 mm. 
C2.3 Ramp, having dimensions in accordance  with Figure C.1, subject to a t olerance of + 0.1 mm. 
C2.4  Glass test panel, 100 mm x 200 mm in area, and 3 mm in thickness, as described in  Annex A. 
C3 Procedure  
Carry out the test at a temperature of 23 ˚C+ 2 oC and 50 + 5 % relative humidity. Prepare the glass test panel 
(C2.4) by the method described in Annex A to give a film of wid th not less than 75 mm. Record the time of 
application. 
Put the painted glass panel against the ramp (C2.3) and 30 min after the application of the paint; allow the 
steel cylinder (C2.1) to roll freely down the inclined ramp and  over the paint film. Examine the rubber O-rings 
on the cylinder and record whether any of the paint is adhering  to them. 
C4 Test report 
The test report shall state whether paint adhered to the O-ring  after 30 min of application. DEAS 927: 2018 
10 © EAC 2018 – All rights reserved
  
 
NOTE All dimensions are in mill imetres and are to a tolerance o f ± 0.1 mm. 
 
Figure C.1 — Apparatus for no pick-up time test 
 
DEAS 927: 2018 
© EAC 2018 – All rights reserved  11
 Annex D 
(normative) 
Determination of resistance to grit abrasion 
D1 Principle 
Grit is allowed to impinge on the pai nt film and the paint is examin ed for damage. 
D2 Apparatus and materials 
D2.1 Angular steel grit, grades G 20 or G 24. The grit shall pass through a 1.18 mm aper ture sieve and 
shall be retained on a 600-µm aperture sieve. 
The 2.25 kg of grit needed for th e test shall be renewed after a total of 24 passes. 
D2.2  Funnel, of sufficient capacity to contain 2.25 kg of the grit (D2.1) an d with an orifice diameter of 16 mm 
attached to a straight tube of 16 mm internal diameter. The tub e is fitted with a shutter with an aperture 
diameter of 16 mm immediately bel ow the funnel and 1.25 m from the open end of the tube (see Figure D.1). 
D2.3 Stand, for holding the funnel and tube attachment (D2.2) in a vertical  position. 
D2.4 Stand, suitable for holding  a test panel at an angle of  45˚+ 5˚ to t he horizontal. 
D2.5 Glass test panel, as described in Annex A. 
 
 
 
Figure D.2 — Abrasion test apparatus 
DEAS 927: 2018 
12 © EAC 2018 – All rights reserved
 D3 Procedure 
Prepare the glass test panel (D2.5) by the method described in Annex A. Secure the panel at an angle of 45˚ 
± 5˚ to the horizontal by means of the stand (D2.4).  Place the fun nel (D2.2) in the stand (D2.3) in such a 
manner that the tube is vertical and the bottom of the tube is 25 mm from the paint film and not less than 25 
mm from the edge of the test panel. 
Close the shutter and place 2.25 kg of the grit (D2.1) in the f unnel.  Open the shutter fully and rapidly to allow 
the grit to fall down the tube in a continuous stream and impin ge on the paint film. 
Remove the panel after three passes of the grit and examine by normal corrected vision the area of impact of 
the grit. 
D4 Test report 
The test report shall state whether the substrate is visible th rough the paint. DEAS 927: 2018 
© EAC 2018 – All rights reserved  13
 Annex E 
(normative) 
Determination of resistance to bleeding 
E1 Principle 
The paint is applied to a bitumen surface and the film is exami ned for dis-colouration after conditioning for 72 
h. 
E2 Apparatus and materials 
E2.1 Bitumen, of grade 50 pen. The quantity taken should be sufficient to fil l the metal tray (E2.2) to a depth 
of at least 6 mm. 
E2.2 Metal tray, of minimum size 150 mm x 200 mm x 6 mm.  The walls of the tray should be of uniform 
height. 
E2.3 Hotplate, capable of maintaining a temperature of 175˚C ± 10 ˚C. 
E2.4 Straightedge, of steel and of minimum length 200 mm. 
E2.5 Steel shims, 350 µm ± 50 µm thick. 
E3 Procedure 
Place the bitumen ( E2.1) in the metal tray ( E2.2) and, using the hotplate ( E2.3), heat the bitumen to 175˚.C ± 
10 ˚C. When the bitumen is molten, spread it with the straightedge (E2.4) to give a smooth surface, level with 
the walls of the tray. Allow the bitumen to cool and condition it at a temperature of 23 ˚C± 2 ˚C for 24 h. 
Secure a strip of transparent tape of width not less than 50 mm  across the bitumen surface, approximately 25 
mm from and parallel to the 200 mm side.  Place two steel shims  (E2.5) not less than 50 mm apart on the 
bitumen surface.  With the aid of a doctor blade, apply a film of the paint across the tape and over the bitumen 
surface with one pass of the blade.  Allow the paint film to dr y in a horizontal position at 23 ˚± 2 ˚C and 50 % ± 
5 % relative hum idity for 72 h. 
Determine the luminance factors of the paint film both on the b itumen and on the transparent tape, using the 
procedure described in B3.1.2 and B3.1.3. 
The test report shall state the difference between the luminanc e factors of the paint films on the bitumen and 
transparent tape. 
E4 report 
The luminance factor of the paint applied to the bitumen shall not be reduced by more  than 3 units below the 
percentage value of the paint applied to the transparent tape. DEAS 927: 2018 
14 © EAC 2018 – All rights reserved
 Annex F 
(normative) 
Determination of resis tance to diesel fuel 
F.1 Principle 
The paint, after application to a mild steel test panel is imme rsed in a bath of diesel fuel for 1 h. The paint film, 
after a recovery period of 1 h, is assessed for a resistance to  scratch using a 1-kg load. After further recovery 
period of 3 h, the paint film is assessed for luminance factor and blistering. 
F2 Materials 
F2.1  Diesel fuel 
F2.2 Absorbent paper   
F2.3 Mild Steel test panels , as described in Annex A. 
F3 Procedure 
Prepare two mild steel panels (F2.3) by the method described in  Annex A, but allow to dry for 72 h only. Carry 
out, with one of the test panels, procedure A as described in I SO 1514, , immersing the panel in the diesel fuel 
(F2.1) for 1 h. Remove the panel from the diesel fuel and dry w ith the absorbent paper (F2.2). 
Allow a recovery period of 1 h and then carry out the scratch t est procedure described in ISO 1518 using a 
load of 0.8 kg. Examine the film for penetration to the substra te using normal or corrected vision and without 
magnification and report the result. 
Allow a further recovery period of 3 h and, with normal or corr ected vision, examine the paint film for signs of 
blistering using the non-immersed film for comparison and repor t any deterioration. Determine the luminance 
factors of the paint films, using the procedure described in B3 .1.2 and B3.1.3. 
The test report shall state whether penetration of the costing to the substrate has occurred after the scratch 
test and the difference in luminance factors of the immersed an d non-immersed paint films. Report whether 
blistering has occurred. 
F4 Test report 
The following shall be reported 
a) There shall be no penetration by the needle through the coat ing to the substrate; and 
b) After the further recovery period of 3 h, there shall be no signs of blistering in comparison with the non-
immersed paint film, and the luminance factor shall be not redu ced by more than 3 units from the 
percentage value for the paint. DEAS 927: 2018 
© EAC 2018 – All rights reserved  15
 Annex G 
(normative) 
Determination of resistance to salt solution 
 
G1 Principle 
The paint is applied to a mild steel test panel, which is subse quently immersed in a saline solution for 10 h. 
The resistance to scratch of the film is assessed immediately a nd, after a recovery period, the film is assessed 
for changes in other properties. 
G2 Apparatus and materials 
G2.1 Sodium chloride solution , 20% (m/m). 
G.2.2 Absorbent paper 
G2.3 Mild steel test panels , as described in Annex A. 
G3 Procedure 
Prepare two mild steel panels (G2.3) by the method described in  ISO 1514 but allow to dry for 72 h only. 
Carry out, with one of the test panels, procedure A as describe d in ISO 1514, immersing the test panel in the 
sodium chloride solution (G2.1)  for 18 h. Remove the panel from  161: the solution and dry with the absorbent 
paper (G2.2). 
Allow a further recovery period of 3 h and, with normal or corr ected vision, examine the paint film for signs of 
blistering using the non-immersed film for comparison and repor t any deterioration. Then determine the 
luminance factors of the paint films, using the procedure descr ibed in B3.1.2 and B3.1.3. 
The test report shall state whether any penetration of the sodi um chloride solution has occurred and the 
difference in luminance factors of the immersed and non-immerse d paint films. 
G4 report 
The following shall be reported 
a) There shall be no penetration  by the needle through the coat ing to the substrate; and 
b) After the further recovery period of 3 h, there shall be no signs of blistering in comparison with the non-
immersed paint film, and the luminance factor shall be not redu ced by more than 3 units from the 
percentage value for the paints  DEAS 927: 2018 
16 © EAC 2018 – All rights reserved
 Annex H 
(normative) 
Information on road performance trials and their control 
H1 General 
The road performance trials specified in  clause 6 are required to be carried out under the direction of a 
supervising authority. 
H2. Pre-conditions and procedures 
H2.1 Frequency 
Road performance trials shall not be carried out more frequentl y than once annually. If, in any year, the 
 number of paint samples that are submitted and accepted for te sting is insufficient, in the opinion of the 
 conformity assessment body to justify the road trial and the c oncomitant disruption of traffic at the test site, 
 the trial will not take p lace during that year. 
H2.2 Duration 
The road performance trial will have duration of 12 months. 
H2.3 Location  
The site for the road performance trials is selected by conform ity assessment body 
H2.4 Applicants 
Manufacturers or other applicants wishing to submit samples of paint or paints for testing in the road 
performance trials are required formally to notify the supervis ing authority. The notification is to state the 
number of paints being submitted to the trial. 
H2.5 Samples 
Sufficient quantities of paint are required to be supplied to t he supervising authority to enable samples to be 
selected at random. The paint supplied is required to have the same batch number as the samples submitted 
to the laboratory tests specified in table 1.  
H2.6 Paint Application 
The road surface is required to be free from moisture and loose  particles. The paint will be applied when the 
air temperature is between 10 ˚C and 25 ˚C  with relative humidity not greater than 85 % and when the ro ad 
surface temperature is less than 40 ˚C. 
The paint will be applied by commercial striping equipment to g ive a stripe having a wet film thickness not 
greater than 400 µm if the average texture depth is not greater  than 1.5 mm or a stripe having a wet film 
thickness not greater than 600 µm if the average texture depth is greater than 1.5 mm. A test panel will be 
placed on the highway and will be  painted during each pass of t he equipment and immediately used to 
measure and verify the wet film thickness. 
Only one pattern of stripes will be used throughout a road perf ormance trial. Each stripe will be 100 mm ± 10 
mm in width, on the left-hand lane of the carriageway and trans verse to the length of the carriageway. The 
paint will be applied in dup licate on the surface. 
The examination procedures (see H.2.7 ) will, however, be only carried out on one stripe of each pair . The 
additional test stripes will be reserved for evaluation if, in the opinion of the assessors, the test stripe has been 
damaged by external agencies, other than natural ageing or wear , to an extent which precludes its fair 
assessment. DEAS 927: 2018 
© EAC 2018 – All rights reserved  17
 The test site will not be opened to traffic until all the paint ed surfaces have dried for 30 min. 
H2.7 Examination procedures 
The supervising authority shall superintend the application of the paints. A panel of assessors will be 
appointed by the supervising authority and shall verify that su ch paint is applied as described in H.2.6 . After 
allowing the applied paint to dry for a minimum of 30 min the a ssessors shall evaluate one of each pair of 
duplicate stripes for compliance with clause 6. The width of ea ch non-reflectorized paint stripe measured 
between 600 mm and 900 mm from the near side kerb will be recor ded to the nearest millimetre. 
At the regular inspection intervals of 6 months and 12 months f ollowing the initial application, a panel of five 
assessors with the same representation as above will evaluate e ach stripe for compliance with clause 6. 
NOTE  Each area used for the assessment of erosion should be photogr aphed for future reference in the case of 
dispute. 
H2.8 Removal of markings 
At the completion of each road performance trial, if required t o do so by the local highway authority, the 
supervising authority will arrange for the markings to be remov ed without damage to the carriageway surface 
and to the satisfaction of th e local highway authority. 
H2.9 Test report  
At the completion of the road performance trial, the supervisin g authority will prepare a test report for each 
paint, which will include the following information: 
a) The type and identification of the product tested; 
b) The intended duration of use; 
c) The location of the test site; d) The pattern of markings; 
e) The road surfaces, i.e bituminous and concrete; 
f) The conditions at time of application; 
i) air and road temperature; ii) weather; 
g) The method of application and the wet film thickness of the paint; 
h) The method of application and the wet film thickness of the paint; 
i) The date of application of the paint and duration of the tes t; 
j)  Any deviation, by agreement or otherwise, from the procedur e specified in this standard; 
k) The performance of the paint with reference to the requireme nts specified in clause 6  at each of the 
inspection visits. 
 DEAS 927: 2018 
18 © EAC 2018 – All rights reserved
 Annex J 
(normative) 
Determination of degree of erosion 
 
J1 Principle 
Erosion of the surface of each of the paint stripes is assessed  by reference to a rating system from which a 
‘Wear Index’ may be determined. 
J2 Procedure 
J2.1 Preparation of test area 
Mark on each of the reflectorized and non-reflectorized strips the extremes of the test area, which shall be 750 
mm ± 50 mm and 1250 mm ± 50 mm, measured from the near side ker b. 
Thoroughly wet the test area with one litre of clean water and,  using a brush, brush the area evenly to 
dislodge superficial dirt. Rinse the area with a further one li tre of clean water and remove the surface water 
with a soft sponge. 
J2.2 Assessment of wear  
J2.2.1 On-site assessment  
Immediately after preparing each test area, position the test g rid as shown in  figure J 1 Assess the degree of 
paint erosion of each of the 20 grid squares according to the r atings as defined in Table J.1 and record the 
number of squares in each grade. (The tabular form shown in Tab le J.2 is recommended.)  
Table J.1—Assessment of rating of grid squares 
Grade 
 Area of paint remaining Weighting 
factor 
a 
 Greater than or equal to 75 % 
 X 1 
 
b 
 Greater than or equal to 50  % and less 
than 75% 
 X 2 
 
c Greater than or equal to 25 % and less 
than 50 % 
 X 3 
 
d Less than 25 % X 4 
 DEAS 927: 2018 
© EAC 2018 – All rights reserved  19
  
Table 4. Specimen ‘wear index’ table  
Grade Number of squares Weighting factor Wear index 
a  X 1  
b  X 2  
c  X 3  
d  X 4  
 Total: 20  Total: 
If skid marks or other non-erosion characteristics make it diff icult in the opinion of the assessors to obtain an 
assessment of a grid square, ignore the affected square and, af ter recording the results of those squares 
which can be assessed, the grid shall be moved to include new s quares in order to bring the total number up 
to 20. Up to eight new squares may be used in the position and sequence given in Figure J 2 but assess only 
one new square for each square that cannot be assessed with the  grid in the original position. 
Calculate the ‘wear index’ by multiplying the number of squares  in each grade by the respective weighting 
factor for that grade and add together the four subtotals to gi ve the total ‘wear index’. Compare the results of 
the five assessors and discard the highest and lowest results a nd calculate the mean of the remaining results. 
If the value of the mean is in ex cess of 35 carry out the proce dure described in J2.2.2. If the value of the mean 
is not in excess of 35, report the values obtained from the on- site assessment as the total ‘wear index’. 
J2.2.2 Measurement on photographs  
Photograph the test area with grid in position with a 35-mm cam era using a 50-mm lens and monochromatic 
film. Hold the camera on a trip od at a distance between 750 mm and 800 mm above the test area. 
Enlarge the photograph of the test area of the marking to half actual size. Assess the area of marking 
remaining within each of the 20 grid squares as depicted in the  enlarged photograph with area analysis 
equipment, which is based on the magneto scription technique. 
Trace with the stylus of the equipment around each area of erod ed marking; that is, those areas, which are 
not substantially, white, within each of the 20 grid squares. C alculate the percentage of marking remaining 
within each grid square using the relationship 100- (% eroded).  Grade each of the grid squares as defined in 
Table 3 and record the number of squares in each grade. (The ta bular form shown in Table 4 is 
recommended). Calculate the tota l ‘Wear Index’ as described in J2.2.1.  
Report the value obtained from the measurements made on the pho tographs as the total ‘Wear Index’. DEAS 927: 2018 
20 © EAC 2018 – All rights reserved
 Nearside kerb 
 
Fig. J1 The location of the test grid on a road marking (each g rid square is approximately 50 mm × 50 mm). 
 
Additional squares shall be used in the sequence given. 
b) The location of additional grid squares. 
Figure J.2— positioning of the test grid for assessment of degr ee of erosion 
J.3 Report 
The test report shall state the following information: 
a) the results of each of the five assessors (see H2.7) and the  mean result (see J2.2.1). 
b) the result of the photographic assessment (J2.2.2), if appro priate. 
 
DEAS 927: 2018 
© EAC 2018 – All rights reserved  21
  
Bibliography  
[1] KS 162:1992,  Specification for road marking paints 
 DEAS 927:2018 
 
© EAC 2018  – All rights reserved