اﻟﻌﺮﺑﻴﺔ  اﻟﺨﻠﻴﺞ  ﻟﺪول اﻟﺘﻌﺎون  ﻣﺠﻠﺲ  ﻟﺪول اﻟﺘﻘﻴﻴﺲ  هﻴﺌﺔ  
GCC STANDARDIZATION ORGANIZATION (GSO) 
 
 
 
  
ﻣﺸﺮوع:  ﻧﻬﺎﺋﻲ   
 
  
 
GSO/02/FDS/ECE 93: 2009 
 
 
 
 
  
 
   
 
 
إﻋﺪاد 
 ﻟﻘﻄﺎع اﻟﺨﻠﻴﺠﻴﺔ  اﻟﻔﺮﻋﻴﺔ  اﻟﻔﻨﻴﺔ اﻟﻠﺠﻨﺔ   واﻹﻃﺎرات  اﻟﻤﺮآﺒﺎت  ﻣﻮاﺻﻔﺎت  
 
 
 
 
       ﻗ ﻟﻤﻮاﺻ  ﻣﺸ  اﻟﻮﺛﻴﻘ  هﺬﻩ                     ﻓﺈﻧﻬ ﻟ ﺑﺸ  واﻟﻤﻠﺤﻮﻇ  اﻟ ﻹﺑ ﺗﻮزﻳﻌﻬ  ﺗ ﺧﻠﻴﺠﻴ  ﻴﺎﺳ
                          ﻣﺠﻠ  ﻣ اﻋﺘﻤﺎده  ﺑﻌ إﻻ ﺧﻠﻴﺠﻴ  ﻗﻴﺎﺳ  آﻤﻮاﺻ  إﻟﻴﻬ اﻟﺮﺟ  ﻳﺠ وﻻ واﻟﺘﺒ  ﻟﻠﺘﻐﻴﻴﺮ  ﻋﺮﺿﺔ
اﻟﻬﻴﺌﺔ إدارة .  اﻟﺴﻴﺎرات-اﻷ  اﻟﺤﻤﺎﻳﺔ  ﺣﻮاﺟﺰ   اﺧﺘﺒﺎرهﺎﻣﺎﻣﻴﺔ  وﻃﺮق  ﻟﻠﺸﺎﺣﻨﺎت   
MOTOR VEHICLES 
FRONT UNDERRUN PROTECTIVE  DEVICES IN TRUCKS 
AND ITS METHODS OF TEST  2 
ﺗﻘﺪﻳﻢ 
ﻋﻀﻮﻳ  ﻓﻲ ﺗﻀﻢ إﻗﻠﻴﻤﻴﺔ  هﻴﺌﺔ اﻟﻌﺮﺑﻴﺔ  اﻟﺨﻠﻴﺞ  ﻟﺪول اﻟﺘﻌﺎون  ﻣﺠﻠﺲ  ﻟﺪول اﻟﺘﻘﻴﻴﺲ  هﻴﺌﺔ  اﻷﺟﻬﺰة  ﺘﻬﺎ
 اﻟﻘﻴﺎﺳﻴﺔ  اﻟﻤﻮاﺻﻔﺎت  إﻋﺪاد اﻟﻬﻴﺌﺔ ﻣﻬﺎم وﻣﻦ ، اﻟﻌﺮﺑﻴﺔ  اﻟﺨﻠﻴﺞ  دول ﻓﻲ واﻟﻤﻘﺎﻳﻴﺲ  ﻟﻠﻤﻮاﺻﻔﺎت  اﻟﻮﻃﻨﻴﺔ
 ﻣﺘﺨﺼﺼﺔ  ﻓﻨﻴﺔ ﻟﺠﺎن ﺑﻮاﺳﻄﺔ  اﻟﺨﻠﻴﺠﻴﺔ . 
 
        اﻟﻔﻨﻴ اﻟﻠﺠﻨ  ﻋﻤ ﺑﺮﻧ  ﺿ  اﻟﻌﺮﺑﻴ  اﻟﺨﻠ  ﻟ اﻟﺘﻌ  ﻣﺠﻠ  ﻟ اﻟﺘﻘﻴ  هﻴﺌ ﻗﺎﻣ وﻗ
رﻗﻢ2-1  "   اﻟﺨ اﻟﻔﻨﻴﺔ اﻟﻠﺠﻨﺔ          واﻹﻃ  اﻟﻤﺮآﺒ  ﻣﻮاﺻ  ﻟﻘﻄ  اﻟﻔﺮﻋﻴﺔ  ﻠﻴﺠﻴﺔ  "   ﺑﺈﻋ   اﻟﻤﻮاﺻ
اﻟﺨﻠﻴﺠﻴﺔ  اﻟﻘﻴﺎﺳﻴﺔ   رﻗ "  GSO/02/FDS ECE 93: 2009 "   اﻟﺴ    - اﻷﻣﺎﻣﻴ  اﻟﺤﻤﺎﻳ  ﺣ   
  اﺧﺘﺒﺎرهﺎ  وﻃﺮق  ﻟﻠﺸﺎﺣﻨﺎت                "  اﻟﻤﻮاﺻ  اﺳ  ﺑﻌ اﻟﻤﺸﺮوع  إﻋﺪاد ﺗﻢ وﻗﺪ ﻋﻤﺎن ﺳﻠﻄﻨﺔ  ﻗﺒﻞ ﻣﻦ
و اﻟﻌﺮﺑﻴﺔ  اﻟﺼﻠﺔاﻟﻘﻴﺎﺳﻴﺔ  ذات اﻟﻤﺮﺟﻌﻴﺔ  واﻟﻤﺆﻟﻔﺎت  واﻟﺪوﻟﻴﺔ  اﻷﺟﻨﺒﻴﺔ . 
   
 اﻟﻤﻮاﺻﻔﺔ  هﺬﻩ اﻋﺘﻤﺪت  وﻗﺪ  ﺧﻠﻴﺠﻴﺔ  ﻓﻨﻴﺔ آﻼﺋﺤﺔ         رﻗﻢ اﻟﻬﻴﺌﺔ إدارة ﻣﺠﻠﺲ  اﺟﺘﻤﺎع  ﻓﻲ)           
      ( ﺑﺘﺎرﻳﺦ  ﻋﻘﺪ اﻟﺬي ،         /      /       اﻟﻤﻮاﻓﻖ   ، هـ/      /       م . 
 
Foreword 
 
 
 
Standardization Organization for G CC (GSO) is a regional Organization 
which consists of the National Standard s Bodies of GCC member States. One 
of GSO main functions is to issue Gulf Standards /Technical regulation 
through specialized technical committees (TCs). 
 
GSO through the technical program of committee TC No . 2-1 "  The Gulf 
technical Subcommittee for vehicles and tyres standards " has prepared this 
Standard .  The Draft Standard has b een prepared by sultanate of Oman.  
 
The draft Standard has been prepared based on relevant ADMO, International 
and National foreign Sta ndards and references. 
 
This standard has been approved as Gulf  Technical Regulation by GSO Board 
of Directors in its meeting No. .../....  …….held on    /    /   /  H ,  /    /   G 
 
  3MOTOR VEHICLES 
FRONT UNDERRUN PROTECTION IN TRUCK AND ITS METHODS 
OF TEST 
 
 
 
1- SCOPE AND FIELD OF APPLICATION 
This standard is concerned with th e requirements for the front underrun 
protective devices (FUPD) of trucks  having maximum mass exceeding 3.5 
tones used for the carriage of goods. This  standard does not apply to off road 
vehicles and vehicles such that their use is incompatible with the provisions of front underrun protection. 
 
2- COMPLEMENTARY REFERENCES 
 
2.1 GSO 159/.1993.... “Motor Vehicles - Weights and Dimensions”. 
 2.2 GSO 48/.1984.... “Motor Vehicles - Conformity Certificates”. 
 
3- DEFINITIONS  
3.1 Maximum mass:  The mass stated by the vehicle manufacturer to be 
technically permissible. 
 3.2 Maximum weight:  The vertical force (in newt ons) required to support the 
same vehicle loaded to its maximum mass. 
 3.3  Unladen Vehicle:  The vehicle in running order unoccupied and unladen but 
complete with fuel, coolant, lubricant, tools and a spare wheel.  
 3.4 Type of FUPD : FUPD which do not differ with respect to the essential 
characteristics such as shape, dime nsions, attachment, materials and the 
markings. 
 3.5 Front Underrun Protection (FUP)  : The presence at the front of the vehicle 
of  either: a special FUPD or a body work, chassis parts or other components  4such that by virtue of their shape and characteristics, these elements can be 
regarded as fulfilling the function of the FUPD.  
 
4- REQUIREMENTS 
 The following shall be met:  
 4.1 General 4.1.1 All vehicles carrying goods, including tankers, mobile cranes, mobile 
workshops of maximum mass exceeding 3.5  tonnes, shall be equipped with 
front underrun protective de vices to offer effective protection for passenger 
cars or vehicles carrying goods havi ng maximum mass not exceeding 3.5 
tonnes against underrunning in the event of a front al collision. 
4.1.2 The front underrun protective device sh all comply with the requirements 
specified in item 4.2. 
4.1.3 If the vehicle is so designed and equippe d at the front that by virtue of their 
shape and characteristics, its component  parts comply with the requirements 
specified in items 4.2 and 4.3, then the vehicle may not be necessary to be provided with front underr un protective device. 
4.1.4 The maximum mass of a vehicle type for which the front underrun protective 
device to be installed shall not exceed the value indicated on the front underrun  
                    protective device for which it is designed for.   4.2 FUPD Technical requirement 4.2.1 The FUPD shall offer adequate resistan ce to forces applied parallel to the 
longitudinal axis of the vehicle a nd also satisfy certain dimensional 
requirements. These shall be checked in accordance with the test procedure and conditions specified in this Regulation. 
4.2.2 The section height of the FUPD cross- member shall not be  less than 100 mm 
for goods vehicles having a maximum mass between 3.5 and 12 tones  and 120 
mm for goods vehicles having ma ximum mass exceeding 12tones. 
4.2.3 The lateral extremities of the cross-memb er shall not bend to the front or have 
a sharp outer edge; this condition is fulf illed when the lateral extremities of the 
cross-member are rounded on the outside a nd have a radius of  curvature of not 
less than 2.5 mm. 
4.2.4 The device may be so designed that its position at the front of the vehicle can 
be varied. In this event, there shall be  a guaranteed method of securing it in the 
service position so that any unintentiona l change of position is precluded.   54.2.5 It shall be possible for the operator to vary the position of the device by 
applying a force not exceeding 40 daN; 
4.2.6 The outermost surfaces of every front guard installation shall be essentially 
smooth or horizontally corrugated so that  domed heads of bolts or rivets may 
protrude beyond the surface to a distance not exceeding 10 mm. 
 4.3 Installation of FUPD   4.3.1 The maximum mass of a vehicle type sh all not exceed the value indicated on 
the approved FUPD intended to be installed on that vehicle. 
4.3.2 The vehicle with the FUPD installed sh all satisfy the dimensional requirements 
specified in item 6.3 of this regulation taking into account the test conditions 
and information indicated on this re gulation in respect of the FUPD. 
4.3.3 The FUPD shall be so fitted to the vehicle that the horizontal distance 
measured in the rearward direction from the foremost part of the vehicle to the 
front of the FUPD does not exceed  400 mm diminished by the recorded 
deformation measured at any of the poi nts where the test forces have been 
applied during the test of the FUPD in conformity w ith the provisions of this 
regulation . 
4.3.4 In measuring the distances, any part of  the vehicle which is more than 2 m 
above the ground shall be excluded. 
4.3.5 The maximum ground clearance with resp ect to the underside of the FUPD  
shall be no more than 400 mm, between the two points (P1) in the installed 
condition.(Fig 2) 
4.3.6 Outboard of each point (P1) of the above  mentioned height may be greater than 
400mm providing the underside is not  above a plane passing through the 
underside of the FUPD directly below th e point (P1)and form ing a slope at 15° 
above the horizontal (Fig 2) 
 4.3.7 The height above the ground of the point s of application of  the test forces 
applied to the FUPD sh all not exceed 445 mm  
 4.3.8 The maximum ground clearance with re spect to the underside of the FUPD 
between the two points (P1)  shall be no more than 450 mm taking into account 
their movement during the appl ication of the test load. 
4.3.9 The width of the FUPD shall at no point exceed the widt h of the mudguards 
covering the wheels of the foremost ax le nor shall it be  more than 100 mm 
shorter on either side than the foremost  axle measured at the outermost points 
of the tyres, excluding the bulging of the tyres close to the ground (fig 1), or  6200 mm shorter on either side, measured  from the outermost points of the 
access steps to the driver's cabin. 
  4.4 Vehicle with Front underrun protection (FUP)  
 4.4.1 Any vehicle used for the carriage of goods and having a maximum mass 
exceeding 3.5 tonnes shall be deemed to satisfy the condition of providing effective protection for passenger cars and trucks having a maximum mass less 
than 3.5 tonnes against under running, pr ovided that the vehicle is equipped 
with an FUPD which has not been separately approved for this Regulation or is so designed and/or equipped at the front  that, by virtue of their shape and 
characteristics, its component parts can  be regarded as replacing the front 
underrun protective device. 
4.4.2 Components whose combined function sa tisfies the following requirements are 
considered to form a front underrun protective device. 
4.4.3 The FUP shall offer adequate resistan ce to forces applied parallel to the 
longitudinal axis of the vehicle. 
4.4.4          The FU P shall satisfy the dimensional require ments indicated in item 6.3 of this 
regulation.  
4.4.5 The section height of the FUPD cro ss-member not separately approved shall 
not be less than 100 mm for goods vehi cles having a maximum mass between  
3.5 and 12 tonnes and 120 mm for vehicles having maximum mass exceeding 12tonnes 
4.4.6 The device may be so designed that its position at the front of the vehicle can 
be varied. In this event, there shall be  a guaranteed method of securing it in the 
service position so that any unintenti onal change of position is precluded. 
4.4.7 It shall be possible for the operator to vary the position of the device by 
applying a force not exceeding 40 daN; 
4.4.8 The FUP shall have sufficient strength th at the horizontal distance measured in 
the rearward direction between the foremost part of the vehicle after the application of the test forces and the test ram contact surface on the vehicle 
does not exceed 400 mm ( item 6.3). 
4.4.9 In measuring the distances, any part of  the vehicle which is more than 2 m 
above the ground shall be excluded. 
4.4.10 The maximum ground clearance with resp ect to the underside of the FUP shall 
be no more than 400 mm between the two points P1 (Fig 2)  74.4.11       This height may be greater th an 400 mm providing the under side is not above a 
plane passing through the unde rside of the FUP directly  below the point P1 and 
forming a slope at 15° above the horizontal (Fig 2)  
4.4.12 The maximum ground clearance with re spect to the underside of the FUP 
between the two points P1 shall be no more than 450 mm taking into account 
their movement during the appl ication of the test load. 
4.4.13 The width of the FUP shall at no point  exceed the width of the mudguards 
covering the wheels of the foremost ax le nor shall it be  more than 100 mm 
shorter on either side than the foremost  axle measured at the outermost points 
of the tyres, excluding th e bulging of the ty res close to the ground ( Fig l), or 
200 mm shorter on either side, measured  from the outermost points of the 
access steps to the driver's cabin. 
 
5- MARKING 
 
5.1 Each front underrun protective device sha ll be legibly and durably marked or 
labelled with the following information in Arabic and/or English. 
5.1.1 Manufacturers name and/or trademark. 5.1.2 Date of manufacture. 5.1.3 The maximum mass of vehicle on which the front underrun protective device 
may be installed. 
5.1.4 A detailed description with sketches th e correct installation and adjustment of 
the device. 
5.1.5 Drawings, diagrams and layout plans of the components of the structure. 
 
6- TESTING 
 
6.1 Sampling 
 A sufficient number of front underrun pr otective devices sha ll be taken from 
the consignment of the devices of the sa me type and subjected to the required 
tests prescribed in this standard. 
6.2 Measuring instruments 6.2.1 Dimension measuring instrument  The instruments used shall permit measurement to an accuracy of ( ± 1) mm. 
6.2.2 Force measuring instruments  The instruments used shall perm it measurement to an accuracy of ± 5% of the 
range.  8 
6.3 Tests  The following tests shall be carried out  on the sample withdrawn in accordance 
with item 6.1. 
6.3.1 Visual inspection   The front underrun protective device shall be visually examined to check for 
any damage, crack, sharp outer ed ge or any apparent defects. 
6.3.2 Test conditions for FUPD  6.3.2.1 The test may be carried out either:  - On a vehicle of the type for which FUPD is intended  - On a part of the chassis of the vehi cle type for which the FUPD is intended, 
this part shall be representative  of the vehicle type in question 
 - On a rigid test bench 6.3.2.2 Test conditions for vehicles. 
- The sample shall be installed on to a vehicle of the type for which the front 
underrun protective device is intended or  part of the chassis or on a rigid 
bench.. 
- The vehicle shall be restrained by a suitable method as specified by the 
manufacturer to or restrained  by any method specified by the 
manufacturer. 
- The dimensions shall be taken as if the vehicle were in the following 
condition: 
- The vehicle shall be at rest on a level, flat, rigid and smooth surface. 
- The front steered wheels shall be  in the straight-ahead position. 
- The vehicle shall be unladen. - The tyres shall be inflated to the pressure recommended by the vehicle 
manufacturer. 
- Vehicles equipped with hydro-pneumatic, hydraulic or pneumatic 
suspension or a device for automatic leveling according to load, shall be 
tested in the normal running conditio n specified by the manufacturer. 
6.3.2.3 Procedure  The measurements shall be made on the front underrun protective device 
installed in accordance with item 6.3. 2.1 and in compliance with items 6.3.2.2  
 6.3.3 Strength test 6.3.3.1 Apparatus  9- The apparatus shall consists of a rams  which are suitably articulated (e.g. by 
means of universal joints) and shall be pa rallel to the median longitudinal plane 
of the vehicle via a surface not more than 250 mm in height indicated by the manufacturer. 
- The surface shall not be more than 400 mm  wide, with a radius of curvature of 
(5 ± 1) mm at the vertical edges. 
- The centre of the surface is placed succe ssively at points P1, P2 and P3 (fig 1) 
6.3.3.2 Preparation for the test  The vehicle shall be prepared fo r the tests as explained in item 6.3.2.2. 
6.3.3.3 Procedure 6.3.3.3.1 Points P1 are located up to 200 mm from  the longitudinal planes tangential to 
the outermost points of the tyres on the front axle, excluding the bulging of the 
tyres close to the ground; points P2 are symmetrical to the median longitudinal 
plane of the vehicle at a distance  from each other of 700 to 1,200 mm 
inclusive. The exact positions shall be specified by the manufacturer. 
6.3.3.3.2 The height above the ground of points P1 and P2 shall be defined by the 
vehicle manufacturer within the lines that bound the front face of the device. 
The height shall not, however, exceed 445 mm when the vehicle is unladen. P3 
is in the vertical longitudinal medi an plane of the vehicle ( Fig 1 ) 
6.3.3.3.3 The test forces set out below shall be applied to each of the test points in 
separate tests on the same vehicle or device or, if requested by the manufacturer, on different vehi cles or device samples. 
- If the structure and components of th e vehicle relevant to the front underrun 
protection are located subs tantially symmetrical to its longitudinal median 
plane the tests at points P1 and P2 shall be carried out only on one side. 
- When tested the forces shall be applied as rapidly as possible and the device or 
vehicle shall withstand the forces in th e items mentioned below for at least 0.2 
seconds. 
- A horizontal force equal to 50% of th e maximum weight of  the vehicle or 
intended vehicle type(s) but not exceed ing 80 x 10³ N shall be applied 
successively to both points P1  
- A horizontal force equal to 100% of th e maximum weight of the vehicle or 
intended vehicle type(s) but not exceeding 160 x 10³ N shall be applied successively to both points P2.  
-    If the device is discontinuous and is reduced in cross-section area between the 
two points P2, then the test s shall continue with the application of a horizontal 
force applied to the point P3 the same as that to the points P1.  106.3.3.3.4. The maximum horizontal and vertical di splacements of each test point during 
the application of the above forces sh all be recorded and the highest value 
recorded on the test re port or the document s upplied with the device. 
 6.3.3.4 Result  At the end of each test the distance  between the rear of the front underrun 
protective device and the fr ont extremity of the vehi cle at any of the points 
shall be measured. 
 
7- CRITERIA OF TECHNICAL CONFORMITY 
 
7.1 The criteria of technical conformity  shall be in accordance with the Gulf 
Standard G.S. 48/1984 “Motor Vehicl es - Conformity Certificates”. 
 7.2 The front underrun protective device sha ll be considered complying with all 
the requirements of this regulation when the withdrawn sample from the consignment or the supplied sample by the manufacturer passes the tests. 
 7.3 In case one or more front underrun protec tive device in the sample fails to pass 
the tests, a second sample double the numbe r of units as the first one shall be 
withdrawn from the same consignment or  the supplied sample and subjected to 
the tests. 
 The front underrun protective device sh all be considered complying with the 
requirements of this regulation when all the units of the second sample pass the tests, otherwise the front underrun protec tive device shall be considered non-
complying. 
   11 
    
 
Fig 1 
 
  12 
 
  
 
  
 
 
 
Fig 2