Here you go have a read. Especially bottom of page; Number 9. Found a link to a guy that pulled for it and took is car away on transporter as it wasnt fit for english roads. Dont knwo what they do with all these hummers etc on the road though.
6. GENERAL SPECIFICATIONS
6.1. Each lamp shall conform to the specifications set forth in the paragraphs below.
6.2. Daytime running lamps shall be so designed and constructed that in normal use,
despite the vibration to which they may then be subjected, they continue to function
satisfactorily and retain the characteristics prescribed by this Regulation.
6.3. Daytime running lamps, which are reciprocally incorporated with another function,
using a common light source, and designed to operate permanently with an
electronic light source control gear to regulate the intensity of the light emitted, are
permitted.
6.4. Light source module
6.4.1. The design of the light source module(s) shall be such that even in darkness the
light source module(s) can be fitted in no other position, but the correct one.
6.4.2. The light source module(s) shall be tamperproof.
6.5. In the case of replaceable filament lamp(s):
6.5.1. Any category or categories of filament lamp(s) approved according to
Regulation No. 37 may be used, provided that no restriction on the use is made in
Regulation No. 37 and its series of amendments in force at the time of application
for type approval.
6.5.2. The design of the device shall be such that the filament lamp can be fixed in no
other position but the correct one.
6.5.3. The filament lamp holder shall conform to the characteristics given in IEC
Publication 60061. The holder data sheet relevant to the category of filament lamp
used, applies.
E/ECE/324
E/ECE/TRANS/505 } Rev.1/Add.86/Rev.2
Regulation No. 87
page 11
7. INTENSITY OF LIGHT
7.1. The luminous intensity of the light emitted by each lamp shall not be less
than 400 cd in the axis of reference.
7.2. Outside the reference axis and within the angular fields defined in the arrangement
diagram in Annex 7 to this Regulation, the intensity of the light emitted by each
lamp must:
7.2.1. In each direction corresponding to the points in the table of standard light
distribution reproduced in Annex 3 to this Regulation, be not less than the minimum
specified in paragraph 7.1. above, multiplied by the percentage specified in the said
table of the direction in question, and
7.2.2. not exceed 1,200 cd in any direction the lamp is visible.
7.3. Moreover, throughout the field defined in the diagram in Annex 7, the intensity of
the light emitted must not be less than 1.0 cd.
7.4. In the case of a lamp containing more than one light source the lamp shall comply
with the minimum intensity required when any one light source has failed and when
all light sources are illuminated the maximum intensity shall not be exceeded.
A group of light sources, wired so that the failure of any one of them causes all of
them to stop emitting light, shall be considered to be one light source.
8. APPARENT SURFACE
The area of the apparent surface in the direction of the axis of reference of the lamp
shall be not less than 25 cm² and not more than 200 cm².
9. COLOUR OF LIGHT
The colour of the light shall be white. It shall be measured under the conditions as
prescribed in paragraph 10. below.
The colour must be within the limits of the trichromatic co-ordinates prescribed in
Annex 4 to this Regulation.
