| Information
|
Method
of Inspection |
Reason
for rejection |
| Headlamps
are lamps used to illuminate the road ahead of the vehicle,
but are not fog lamps. This
inspection applies to: All
obligatory headlamps fitted. This
inspection does not apply to: Vehicles
used only during the hours of daylight, which are not fitted
with front or rear position lamps, etc (see 1.1) Note:
Headlamps
are not required on vehicles first used before 1 January 1931,
but they may have one or more optional main or dipped beam
headlamps. |
1.
Check that the vehicle is fitted with obligatory headlamps,
as follows |
1.
a missing or insecure obligatory headlamp.
Note:
Class
3 vehicles may not require two headlamps (matched pair)
|
| a.
a matched pair of main- beam headlamps, and |
|
| b.
a matched pair of dipped-beam headlamps Note:
Main-beam
and dipped-beam functions may be provided by a single pair
of headlamps. |
|
| 2.
Check the presence, condition, security and operation of the
switch. |
2.
A missing, faulty or insecure switch. |
| 'Matched
pair' |
| A
'matched pair' is a pair of lamps which Both
emit light of substantially the same colour and intensity,
and Are
both the same size and shape, so that they are symmetrical
to one another. |
3.
Switch on each main-beam headlamp and check that all
main beams are switched off by one switch (dip switch) which
leaves a matched pair of dipped beam headlamps switched on,
or the
main beam headlamp reflectors are deflected by a driver's
control, to make them dipped beams. |
3.
a.
A headlamp does not operate immediately when selected on dipped
beam or on main beam |
| |
b.
Operation of the dip switch does not extinguish
all main beam headlamps, and leave on at least one pair of
dipped beam headlamps, or deflect
the main beams to make them dipped beams |
| Class
3 Vehicle |
| Vehicles
first used: Before
1 January 1972, or On
or after 1 January 1972 with an
unladen weight of 400kg or less, and an
overall width of 1300mm or less require
only one headlamp. |
Note:
Pre 1 January 1931 vehicles For
vehicles that are fitted with one or two optional headlamps:
where
one is fitted it must dip where
two are fitted, either both must dip or one must dip and the
other switches off |
|
| Headlamp
aim |
| see
1.6 for the inspection of headlamp aim. |
4.
Check that each obligatory headlamp a.
is in good working order Note:
Any
adverse effects due to headlamp lens damage or deterioration
can also be assessed on checking beam aim (see 1.6). A repaired
lens must be assessed on its merits |
4.
An obligatory main or dipped beam headlamp a.
not in good working and in clean condition, ie damaged or
deteriorated to such an extent that the
light output is well below that required to illuminate the
road ahead, or the
beam image is adversely affected |
| b.
is secure |
b.
insecure |
| c.
does not flicker or extinguish when tapped lightly by hand
|
c.
flickers or extinguishes when tapped lightly by hand
|
| d.
if intended to be one of a matched pair emits
light of substantially the same colour as its counterpart
(either white or yellow) Note:
in
a four headlamp system the outer pair of headlamps need not
emit the same colour light as the inner pair. is
the same size is
correctly positioned Note:
The
measurement of the precise position of headlamps is not part
of the inspection, but check visually that the lamps, are
at about the
same height, and the
same distance inboard from the side of the vehicle
|
d.
the headlamps provided to form a matched pair do
not emit light of the same colour are
not the same size are
obviously not correctly positioned |
