After the test for resistance to chemical agents and the test for resistance to detergents and hydrocarbons, the outer face of the samples exhibits no cracks, chipping or deformation visible to the naked eye (see paragraphs 2.2.2., 2.3.1. and 2.3.2.);
After the test the position of the device shall not be significantly different from its original position.
After the test the damage sustained by the vehicle shall be described in a written report; one photograph at least shall be taken of each of the following views of the vehicle:
3.2.1. Sides (right and left),
3.2.2. Front,
3.2.3. Bottom,
3.2.4. Affected area inside the passenger compartment.
4. Correction factors
After the test the position of the device shall not be significantly different from its original position.
3. Test of heat and low-temperature resistance
3.1. The advance warning triangle, in its protective cover, if provided, shall be kept for 12 consecutive hours in a dry atmosphere at a temperature of 60 °C ± 2 °C.
3.2. After the test, no cracking or noticeable distortion of the device shall be visible; this applies in particular to the retro-reflective device. The cover shall be readily openable and shall not adhere to the triangle.
3.3. After the heat-resistance test and subsequent storage for 12 consecutive hours at a temperature of 25 °C ± 5 °C, the advance warning triangle, in its protective cover, is to be kept for another 12 hours in a dry atmosphere at a temperature of -40 °C ± 2 °C.
3.4. Immediately after removal from the cold room, no fractures or any visible distortion shall be noticeable on the device and especially on its optical parts. The protective cover, if provided, shall be properly openable, and it shall neither tear nor adhere to the advance warning triangle.
4. Determination of the roughness of the road surface "sandy beach" method
After the test results and professional qualities are weighed, the District shall make a master list of applicants in the order they have qualified (highest to lowest). The District shall utilize this list to fill an apprentice or apprentice understudy position for which the District is currently testing.
After the test of resistance to atmospheric agents, the outer face of the samples shall be free from cracks, scratches, chipping and deformation, and the mean variation in transmission Δt = 𝑇2 − 𝑇3, measured on the three samples ��2 according to the procedure described in Appendix 2 to this Annex shall not exceed 0.020 (Δtm < 0.020).
After the test of resistance to chemical agents, the samples shall not bear any traces of chemical staining likely to cause a variation of flux diffusion, whose mean variation Δd = 𝑇5 − 𝑇4, measured on the three samples according to the procedure described in Appendix 2 to this Annex shall not exceed 0.020 (Δdm < 0.020).
After the test. (a) Contact between caliper and disc;
(b) Cracks, permanent deformation or breakings;
(c) Abnormal wear;
(d) A 0.150 mm maximum increasing of run-out, compared to the initial value measured before the test, is allowed;
(e) A 0.250 mm maximum run-out is allowed;
(f) A 0.100 mm maximum (for "full floating" disc) straightness increasing, compared to the initial value measured before the test, is allowed." "Annex 15 Criteria for groups of discs for vehicles of categories L1, L2, L3, L4 and L5
1. Definition of the disc braking surface width Braking surface means the surface of a brake disc on which the brake pads work. The braking surface width is calculated between the disc outer diameter and an internal diameter defined as follows:
1.1. Case of braking surface with lightening (holes, slots, wave, etc.) on the braking surface (Figure 1) only: 3 mm towards the centre of the disc from the end of the lightening.
1.2. Case of braking surface with lightening (holes, slots, wave, etc.) with distance from the disc’s internal diameter lower than 5 mm (Figure 2): diameter of the brake disc undercut.
1.3. Case of braking surface with lightening (holes, slots, wave, etc.) which terminate inside, outside the brake disc undercut (Figure 3): diameter of the brake disc internal undercut.
1.4. All other cases: internal diameter defined by the radial width of the largest combinable pad, to which 3 mm need to be added (Figure 4).
2. Groups of discs
After the test. Party A shall draft a summary report, be responsible for the publication of subsequent research paper, and send a copy of the aforesaid paper to Party B after signature and dating.
After the test at least one of the following criteria specified in paragraph 5.4.
