Evaluation and inspection Form for National Small Series type Approval
(NSSTA) for Category O1 & O2 trailers
(O1= <750KG laden)
(O2 =<3500Kg laden)
Part I and part II of evaluation form is to be completed by the applicant (with the
exception of areas verified by an NSAI ATC)
An NSAI Approved Test Centre (ATC) will verify and complete relevant sections of
Part I where it states “verified by ATC” and inspection requirements as in Part IV.
Part IV shall be signed and stamped by an ATC
The applicant shall submit with evaluation and inspection form:
-Braking calculations (compatibility results between control device and brake), drawings
and diagrams, braking test reports
-A copy of installation instructions for the coupling device and a signed declaration that the
installation instructions were followed
-Dimensional drawings, specifications, Bill of materials and photographs describing the
trailer build
-Copy of the Certificate of Conformity (COC) or Whole Vehicle Type Approval Certificate
for the original trailer (if applicable).
-All EC/UN-ECE type approvals granted for the base vehicle (see Part II). (if available)
Audit carried out:
Date of audit:
Audit report issued:
Audit findings:
Quality System Audit for NSSTA
Yes: 
No: 
Yes: 
No: 
Closed off: 
In Progress: 
Audit not carried out
Yes: 
No: 
Completion date:
Has audit been scheduled:
If Yes, date of audit:
If No, then application cannot be finalised until Quality System Audit has been scheduled
Page 1 of 18
Rev.01
Part I
Applicant’s Name
Applicant’s Address
VIN or Unique
identifier
No. of Employees
Telephone number
Fax number
Email
Web address
Applicant is a
subsidiary of
Page 2 of 18
Rev.01
0.
GENERAL
0.1.
Make trade name of manufacturer:
0.2.
Type:
Variant(s):
Version(s):
0.3
Commercial name(s) if available:
0.4.
0.5.
Incomplete/complete/completed:
Type of bodywork:
0.6.
0.7.
Means of identification of type, if marked on the
vehicle:
Location of that marking:
0.8.
Category of trailer:
0.9.
0.10.
If applicable, classifications according to the
dangerous goods which the vehicle is intended to
transport:
Name and address of manufacturer:
0.11.
Addresses of assembly plants:
1.
GENERAL CONSTRUCTION CHARACTERISTICS OF THE VEHICLE
1.1.
1.2.
Photographs and/or drawings of a representative
vehicle:
Number of axles and wheels:
1.3.
Number and position of steered axles:
1.4.
Chassis, overall drawing:
1.5.
If fitted, position and arrangement of engine:
(DA, DB, DC, DE)1
(O1, O2,)
1
DA=semi trailer, DB=Drawbar trailer, DC=Centre axle trailer, DE= Rigid drawbar trailer
Page 3 of 18
Rev.01
2.
MASSES AND DIMENSIONS in kg and mm. Refer to drawings where applicable.
2.1.
Wheelbases
For two axle vehicles:
For multi-axle vehicles:
mm
mm
(More than two axles)
Overall axle spacing (1st axle to last axle):
mm
1st axle to 2nd axle:
mm
2nd axle to 3rd axle:
mm
3rd axle to 4th axle:
Track of each steered axle (if applicable):
Track of all other axles:
mm
mm
Axle 1:
mm
Axle 2:
mm
Axle 3:
mm
Axle 4:
mm
Range of vehicle dimensions (overall)
Length:
Length of the loading area:
Width:
Height (in running order):
mm
mm
mm
mm
For suspensions adjustable for height, indicate normal
running position:
Mass of the vehicle with bodywork in running order:
Distribution of this mass among the axles:
(axles numbered front to rear)
2.2.
2.3.
2.4.
2.6.
2.7.
(Axles numbered front to rear)
Axle 1:
kg. Axle 2:
mm
Kg
kg.
Axle 3:
kg. Axle 4:
kg.
Page 4 of 18
Rev.01
2.8.
2.9.
Technically permissible maximum laden mass stated
by the manufacturer:
Distribution of this mass among the axles:
(Axles numbered front to rear)
kg
Axle 1:
kg. Axle 2:
kg.
Axle 3:
Axle 1:
kg. Axle 4:
kg. Axle 2:
kg.
kg.
Axle 3:
kg. Axle 4:
kg.
2.10.
Technically permissible maximum mass on each axle:
2.11.
Technically permissible maximum mass on each axle
group (tandem axles etc) (if applicable):
kg.
Maximum mass of unbraked trailer (if applicable):
kg.
kg
Maximum mass of braked trailer:
kg
2.14.
Technically permissible maximum static vertical
load/mass on the vehicles coupling point:
kg
5.
SUSPENSION
5.1.
Level adjustment: (Yes/No)
5.2.
Air-suspension: (Yes/No)
5.3.
Tyre / wheel combinations:
(for tyres indicate size designation, minimum load-capacity index, minimum speed category
symbol, suspension)
2.13.
Axle (numbered
front to rear)
Tyre size and
Type
Load Index
Speed Rating
Twin or
Single
Suspension
Type (air, steel,
hydraulic etc)
Axle 1:
Axle 2:
Axle 3:
Axle 4:
5.5.
Upper and lower limits of rolling radii:
Axle 1:
mm
Axle 2:
mm
Axle 3:
mm
Axle 4:
mm
Page 5 of 18
Rev.01
6.
6.0.
Steering (if applicable)
Brief description of steering system:
6.1.
6.2.
Type of steering (specify for front and rear, if
applicable):
Method of assistance, if any (steering wedges, etc):
7.
BRAKES
7.0
Brief description of braking system:
7.1.
Is vehicle fitted with an anti-lock braking system:
(Yes/No):
If yes state category of ABS (1, 2 or 3): Category 1:
What type of brake system is fitted:
7.1.1
7.2
 Air/Vacuum Hydraulic 
Other  (specify):
Full Air
7.3
Yes:

Hydraulic

No:
Category 2:


Electric

Category 3:

Inertia
Which axles have parking brakes fitted:
Axle 1

Axle 2

Axle 3


Axle 4

Page 6 of 18
Rev.01

8.
BODYWORK
8.1.
Bodywork
8.2.
8.3.
Incomplete/complete/completed:
For incomplete trailer, type of bodywork:
(DA, DB, DC, DE):
For complete or completed trailer, final description :
Caravan:
Horsebox:
Other:
8.4.
(Specify)
Filled in by
applicant
Verified by
ATC
For trailers fitted with a coupling device
EC approval number of coupling device:
Class of coupling device:
8.5
D-value:
kN
S-value:
kg
V-value:
kN
U-value:
tonnes
Vehicle is fitted with a statutory plate in accordance with EC Directive 76/114/EC (Yes / No)
Statutory plate contains:





Verified by
ATC
Name of manufacturer
Type-approval number (if available at time of inspection)
Vehicle Identification Number (VIN) or Unique Identifier
Maximum permitted laden mass of the trailer.
Maximum permitted road mass for each axle, listed in order from front
to rear.
Verified by
ATC
VIN or unique identifier is marked on chassis or other structure on right hand
side in such a way that it cannot be obliterated or deteriorate
Page 7 of 18
Rev.01
Part II
Matrix showing the combinations of the entries listed in Part I within the versions and
variants of the vehicle type
Item No
All
Version 1
Version 2
Version 3
Version n
Notes:
(a) A separate matrix shall be compiled for each variant within the type.
(b) Entries for which there are no restrictions on their combination within a variant shall be
listed in the column headed ‘all’.
(c) The above information may be presented in an alternative layout or merged with the
information supplied in Part I.
(d) Each variant and each version shall be identified by an alphanumerical code consisting
of a combination of letters and numbers, which shall also be indicated in the certificate of
conformity (Annex IX) of the vehicle concerned.
(e) Variant(s) which fall(s) under Annex XI of 2007/46/EC (Special Purpose Vehicles)
shall be identified by a specific alphanumerical code.
Page 8 of 18
Rev.01
Part III
Table of compliance with NSSTA Requirements
Please indicate in the table below the EC or UN-ECE approvals and/or test reports in support of application for
Individual Vehicle Approval.
Where an EC approval or test report is not available for any item, an inspection or test will be required at an
Approved Test Centre (ATC) of your choice. Please see a list of ATCs at:
http://www.nsai.ie/Our-Services/Certification/Automotive-Certification/Type-Approval/Approved-TestCenters.aspx
Item
No.
Category
Subject
Base Directive
Number
Yes: 
No: X
UN-ECE
Regulation
Number
3
O1, O2
Fuel tanks
Rear under run
70/221/EEC
4
5
9
O1, O2
O1, O2
O2
Rear reg. plate space
Steering effort2
Braking
70/222/EEC
70/311/EEC
71/320/EEC
10
18
20
76/757/EEC
76/758/EEC
R3
R7
23
24
28
29
36
43
45
46
See 20
See 20
See 20
See 20
O1, O2
O1, O2
O1, O2
O1, O2
Suppression (radio)3
Plates (statutory)
Installation of lighting
and light signalling
devices
Retro reflectors
End-outline frontposition (side), rearposition (side), stop,
side marker, daytime
running lamps
Direction indicators
Rear reg. plate lamps
Rear fog lamps
Reversing lamps
Heating systems4
Spray-suppression 4
Safety glass4
Tyres
72/245/EEC
76/114/EEC
76/756/EEC
21
22
O1, O2
O1, O2
O1, O2
See
Appendix1
See 20
See 20
R34, R67,
R110
R58
-R79
R13, R13H,
R 90
R10
-R48
76/759/EEC
76/760/EEC
77/538/EEC
77/539/EEC
2001/56/EEC
91/226/EEC
92/22/EEC
92/23/EEC
48
O1, O2
97/27/EC
R6
R4
R38
R23
R122
-R43
R30, R54,
R117
--
50
56
O1, O2
O1, O2
94/20/EC
98/91/EC
R55, R102
R105
Masses and
dimensions
Couplings
ADR Trailers4
Yes:

No:
X
Test
Report
Yes: 
No: X
2
If one or more of the axles are steered axles
Compliance can be demonstrated with e marked electronic components
4
If applicable
3
Page 9 of 18
Rev.01
Part IV
Check list for NSSTA compliance of an O1 O2 trailer
To be performed by an NSAI ATC
3. Rear Under run

Result (Pass/Fail)
When the construction of the rear of the vehicle forms the rear under run
protection device, then the ground clearance of the rear part of the
vehicle must not exceed 550mm over a width which is not shorter than
that of the rear axle by more than 100mm on either side (excluding any
tyre bulging close to the ground).
4. Rear Registration plate space
Result (Pass/Fail)

The space for mounting the rear registration plate shall comprise an
even or virtually even rectangular surface with the following
dimensions:
Width 520 or 120mm
Height 120 or 240mm
 The space must allow the mounting of a plate in a position as close to
vertical as is possible by the vehicle structure available.
o < 30º from the vertical if plate is facing upwards.
o < 15º from the vertical if plate is facing downwards.
 The plate shall be visible in the whole space.
46. Tyres (Note - see appendix 2 below)

is fitted with e or E marked tyres (record approval number)

are marked with the appropriate speed and load ratings for their
particular axle locations and the intended use of the vehicle.
(see appendix 2 below for indices)
Each tyre fitted must have the same structure (eg bias-belted, crossply or
radial), nominal size and aspect ratio as any other tyre on the same axle

Result (Pass/Fail)
Page 10 of 18
Rev.01
20. Installation of lighting and light signalling devices (note-see appendix1 below)
Record approval number, characteristic and location of each light signalling device
Approval number
and characteristic
Reversing
Lamp
No. of Measured
devices Height*
Measured
width**
Measured
length***
n/a
Direction
Indicator
Lamp
Hazard warning
signal
Lamp
Stop
Lamp
n/a
Rear
Registration
Lamp
Front position
Lamp
n/a
Rear position
Lamp
n/a
Rear fog
Lamp
n/a
End outline
marker lamp
n/a
Rear retro
reflector
(triangular)
Front retro
Reflector
n/a
n/a
n/a
n/a
n/a
Side retro
Reflector
Side marker
Lamps
Conspicuity
markings
*
**
***
n/a
= height indicates distance from ground to lower edge of illuminated area
= width indicates distance from nearest external vertical edge of trailer to nearest edge of
illuminated area
= length indicates distance from rear external edge of trailer to nearest edge of illuminated
area on side lamps/reflectors or the distance between adjacent lamps. It must be specified
where measured is taken from
Page 11 of 18
Rev.01
20. Installation of lighting and light signalling devices (note-see appendix 1 below)
Requirement
Result
(Pass/Fail)
Observation/
comments
-Check that all mandatory lighting devices and max and min number
of each as described in Appendix 1 are evident:
Reversing lamp(white)
Direction indicator(amber)
Hazard warning signal(amber)
Stop lamp(red)
Rear Registration(white)
Front position lamp(white)
Rear position lamp(red)
Rear fog lamp(red)
End outline marker lamp (white front / red rear)
Rear retro reflector (triangular) (red)
Front retro reflector (white)
Side retro reflector (amber)
Side marker lamps (amber)
-Check measured results recorded above are within the limits set out
in Appendix 1 for each of the positions of the required
lamps/reflectors:
Reversing lamp(white)
Direction indicator(amber)
Hazard warning signal(amber)
Stop lamp(red)
Rear Registration(white)
Front position lamp(white)
Rear position lamp(red)
Rear fog lamp(red)
End outline marker lamp (white front / red rear)
Rear retro reflector (triangular) (red)
Front retro reflector (white)
Side retro reflector (amber)
Side marker lamps (amber)
20. Installation of lighting and light signalling devices (note-see appendix 1 below)
Requirement
Result
(Pass/Fail)
Observation/
comments
-Check that the each of the lamps when activated have the required
colour of light emitted and are activated by required control
i.e. brake pedal activates brake light, reverse gear activates reverse
light etc:
Reversing lamp(white)
Direction indicator(amber)
Hazard warning signal(amber)
Stop lamp(red)
Rear Registration(white)
Front position lamp(white)
Rear position lamp(red)
Rear fog lamp(red)
End outline marker lamp (white front / red rear)
Rear retro reflector (triangular) (red)
Front retro reflector (white)
Side retro reflector (amber)
Side marker lamps (amber)
Page 12 of 18
Rev.01
20. Installation of lighting and light signalling devices (note-see appendix 1 below)
Requirement
Result
(Pass/Fail)
Observation/
comments
- Check the geometric visibility of each of the lighting devices against
the requirements of appendix 1:
Reversing lamp(white)
Direction indicator(amber)
Hazard warning signal(amber)
Stop lamp(red)
Rear Registration(white)
Front position lamp(white)
Rear position lamp(red)
Rear fog lamp(red)
End outline marker lamp (white front / red rear)
Rear retro reflector (triangular) (red)
Front retro reflector (white)
Side retro reflector (amber)
Side marker lamps (amber)
9. Brakes (inertia brakes)
Result
Observation/ comments
(Pass/Fail)
-A laden parking brake test shall be carried out on
the trailer on an 18° gradient
- Check to see if reverse is capable with towing vehicle
Visual inspection of :
- sliding member to ensure brake can be fully applied
- sliding members of control device are protected by
bellows or some equivalent device
48. Masses and dimensions
Attached (Yes/No)
Report TR048 to be completed by the ATC and attached
5. Signature and Authorisation of ATC
I confirm that I have carried out the relevant inspections in accordance with the IVA test procedures for this
category of trailer and category of approval. The vehicle (identification) complies with the requirements.
Signature
----------------------Name
Date
-----------------------
[official stamp of ATC]
Page 13 of 18
Rev.01
Appendix 1
Colour
Presence
Number
Arrangement
Position*
Geometric Visibility
Electrical
Connections
Tell-Tale
α =15° upwards and
5° downwards
ß=45° to right and left
if one device.
30°if two installed
α = 15° upwards and
downwards
ß=80° outwards and
45° inwards
Only light when
in reverse
Optional
See R-48
Visible or
auditory or both
See direction
indicators above
See R-48
Circuit closed
tell-tale see R-48
Width-inner edges not
less than 600mm apart.
400mm if overall width
trailer less 1300mm
H: 350-1500mm
(2100mm if 1500mm
not possible)
Such that the device
illuminates the plate
α = 15° upwards and
downwards
ß=45° to right and left
Must light up
when brake
applied
Optional, see R48
Such that the device
illuminates the plate
See R-48
Optional
ß=horizontal angle
α= vertical angle
Reversing Lamp
White
Direction
Indicators
Amber
Mandatory
O2, O3,O4,
optional on O1 trailers
Category AR
Mandatory
1
mandatory
2nd
optional
No individual
specification
Width - no requirement
Height -above 250 –
below
1200 mm
2
2 rear
W: < 400mm from
edge
H: 3501500mm
(2100mm if 1500mm
not possible)
See direction indicators
above
Category 2a or 2b
Hazard Warning
Amber
Mandatory
2
2 rear
Stop Lamp
Red
Mandatory
Category S1 or S2
2
no special
arrangements
Rear Registration
Plate Lamp
White
Mandatory
Such that
the device
illuminates
the plate
Such that the
device
illuminates the
plate
2
no special
arrangements
W: < 150mm from
edge
H: 3502100mm
α = 15° upwards and
downwards
ß=80° outwards and
45° inwards
See R-48
Circuit closed
tell-tale
2,
see R-48
no special
arrangements
W: <400mm
H:
350-1500mm
(2100mm if 1500mm
not possible)
α = 15° upwards and
downwards
ß=80° outwards and
45° inwards
See R-48
Circuit closed
tell-tale see R-48
Category L
Front Position
Lamp
White
Rear Position
Lamp
Red
Mandatory on trailers
if
> 1600mm wide
Category A
Mandatory
Category RorR1orR2
Page 14 of 18
Rev.01
Colour
Presence
Number
Arrangement
Position*
Geometric
Visibility
Electrical
Connections
Tell-Tale
α = 5° upwards
and downwards
ß=25° right
and left
α = 15° above
and below
ß=30° inwards
and outwards
α = 15° above
and below
ß=30° inwards
and outwards
α = 10° above
and below
ß=30° inwards
and outwards
α = 10° above
and below
ß=45° front
and to the rear
See R-48
Circuit
closed telltale
See R-48
Optional,
see R-48
n/a
n/a
n/a
n/a
n/a
n/a
α = 10° above
and below
ß=45° front
and to the rear
See R-48
See R-48
See R-48
n/a
n/a
ß=horizontal
angle
α= vertical
angle
Rear Fog Lamp
Red
Mandatory
Category
F or F1 or F2
Mandatory if width >2.1m
Category
A or AM (front)
R,R1,R2,RM1orRM2 (Rear)
Mandatory Category class
IIIA or IIIB
1 or 2
no special
arrangements
2 front, 2
rear
no special
arrangements
End-Outline
Marker Lamp
White Front,
Red Rear
Rear RetroReflector
Triangular
Red
Front RetroReflector NonTriangular
White
Mandatory Category class IA
or IB
Side RetroReflector NonTriangular
Amber
Mandatory Category class IA
or IB
Side-Marker
Lamps
Amber
Mandatory if: > 6m long,
Category SM1
See R-48
No special
arrangements
Conspicuity
Markings
white/yellow
side,
red/yellow
rear
Mandatory if:>2100mm
width
O3, O4
Full contour markings rear
>6mlong partial contour to
side
See R-48
See R-48
Apex of ▲
directed
upwards
See R-48
H: 250-1000mm
W: < 400mm and as close as
possible to edge
H: at max. height compatible
with design
W: < 400mm
H:250-900 or 1200 or 1500
See R-48
2
2
See R-48
No special
arrangements
W < 150mm H: 250-900mm
(1500mm if 900mm not
possible)
No special
arrangements
H: 250-900mm(1500mm if
900mm not possible)
L: fitted middle third and
distance between adjacent
reflectors <3m.See R-48
H: 250-900mm(1500mm if
900mm not possible)
L: fitted middle third and
distance between adjacent
reflectors <3m.See R-48
See R-48
* Note: width indicates distance from external edge of trailer to nearest edge of illuminated area; height indicates distance from ground to lower edge of illuminated area
Page 15 of 18
Rev.01
Appendix 2
Load capacity index
Remark
Page 16 of 18
Rev.01
Appendix 2
Speed category symbol
Speed category symbol
F
G
J
K
L
M
N
P
Q
R
S
T
U
H
V
Corresponding speed
80
90
100
110
120
130
140
150
160
170
180
190
200
210
240
Page 17 of 18
Rev.01
Appendix 3
Remarks (if any):
Page 18 of 18
Rev.01