BS EN 1463-2:2021 pdf free download – Road marking materials – – Retroreflecting road studs Part 2: Road test performance specifications.
daylight, source of frequent dirt (such as quarries and field exits) and movement of tracked vehicles.
Any change of site conditions during the test period shall be avoided.
The lengthwise slope and any special circumstances shall be stated in the general report for the test site.
NOTE The in use specifications for ‘flat” refer to a maximum slope of 4 %.
4.3 Weather conditions
At the termination of a road trial, a weather report for the duration of the road trial shall be produced. The weather report can be based on data from the nearest meteorological station and it can include data obtained on the test site itself; it should include aspects of the weather of influence to the results of the road trial.
Whether or not it is agreed between the participating parties that weather information is to be collected, the weather report shall include as a minimum an account of temperature conditions during the testing period.
NOTE Annex C is providing guidance for a simplified reporting method in accordance with the Köppen Climate Classification. The weather report can include a monthly account of mean minimum and maximum day temperatures, the cumulated precipitations in millimetres of water and the number of sand/grit scattering actions, snow ploughing actions etc.
4.4 Traffic conditions
The annual average daily traffic (AADT) of test sites shall be at least 5 000 for the total carriageway in the test direction and shall support between 10 % and 25 % heavy vehicles. A vehicle is considered a heavy vehicle if its maximum gross mass is greater than 7 500 kg.
NOTE It is recommended to select the test site in a way that traffic can be redirected for safe installation and subsequent assessments.
Other special requirements (e.g. snow clearance, studded tyres) not included in the general minimum requirements as specified in this Clause, but considered indispensable for some countries or special applications, may be taken into account by the participating parties for the selection of the test site and recorded in the report for the test site.
4.5 Road surface conditions
Road trials shall be carried out on asphaltic or concrete road surfaces of an age of one year or more, in good condition and without damage in the form of wheel tracks, fissures, cracks or similar. The test needs to be performed at least on one road surface.
NOTE If the intended use of the road stud is for more than one type of road surface, bonding tests on the other road surfaces are recommended.
5 Organization of road trials
5.1 Duration
The duration of road trials shall be:
— One year, in order to try to guarantee that a full climatic cycle is covered (four seasons); otherwise, minimum 11 consecutive months which should include complete summer and winter seasons.
5.2 Longitudinal application patterns
Test studs shall be applied as indicated in Figure 2 and Figure 3:
— lane separation lines instead of road marking; or
— in the gaps between existing lane separation lines; or
— alongside and immediately adjacent to existing lane separation lines (to the right of the line for traffic driving on the right and to the left of the line for traffic driving on the left).
For all patterns, the minimum longitudinal spacing of two consecutive test studs shall be 2,5 m.