BS/EN 13850-2020 pdf download.Postal services — Quality of services — Measurement of the transit time of end-to-end services for single piece priority mail and first class mail.
The overall transit time Q0S level is to be expressed as the percentage of mail distributed within J+n days end-to-end (see the Directive 97/67/EC and its amendments). It specifies a set of requirements for the design of a Q0S measuring system for SPPM, involving the selection and distribution of test items sent and received by selected panellists. The sample design gives the specifications for the panellists and items to be representative of the chosen design basis. The design basis is the most appropriate structural information available to characterise all real mail distributed in the field of study.
The system for measuring the distribution of the end-to-end transit time of SPPM items shall be robust and shall give a statistical measurement at a defined level of accuracy.
These requirements also consider fields of study that cover flows with small mail volumes. Provisions for these fields are detailed in Annex D, where the fields of study are categorised In up to four mail-flow classes. References to higher flexibility in some of these classes are given in several notes throughout this standard.
All measurements shall refer to the end-to-end transit time.
The sample design shall be representative of the chosen design basis. The design basis shall be selected
according to its ability to characterise all real mail distributed in the field of study.
The measuring system shall provide one annual figure for the field of study.
NOTE 1 The figure presented annually may require a test period of 1. 2 or 3 years according to Annex D.
NOTE 2 For cross-border mail flows in categories 2 or 3 of Annex I) it will take 2 or 3 years, respectively, to reach the required minimum sample size.
The measurement methodology shall be objective and shall be auditable.
The field of study shall be used consistently throughout the measurement period.
If the field of study is composed of several study domains, it is the Q0S measurement for the overall field, which shall comply with the requirements of this European Standard.
The group of countries in a cross-border field of study should be used consistently throughout the measurement period.
5.2 Transit time calculation
5.2.1 Measurement unIt
The transit time of a postal item shall be measured in units of days and expressed as J+n days. The day of induction is the date of the next collection after posting.
5.2.2 ContInuity of measurement
For an event to qualify as force majeure, the incident shall fulfil the following minimum requirements. It shall;
— not be caused by the operators involved in the distribution and / or their subcontractors,
— be unforeseeable and.
— be unavoidable by them.
It shall;
— bearareevent,
have a provable impact on several consecutive days of distribution
Thus in case of, for example, natural disaster or terror attacks it should be allowed to consider the deduction of the corresponding period during which operation is affected in such a way that transit times cannot be guaranteed by Thormal” postal operation.
Test items shall be posted on all seven days of the week. Published days without collection (i.e. non. collection days made known to the public in advance) may be excluded.
5.2.3 Calculation of the transit time
For the purpose of this European Standard, transit times for domestic and cross-border mail shall be calculated according to the working week calculation rule as presented in Annex B. Published regional holidays may be subtracted in the calculation of transit time.
The calculation of the transit time takes into account test items posted before the last collection time of the day for the type of mail in the field of study. The last collection time is taken as stated on the postal letterbox, published at the post office or otherwise announced by the postal operator. Test items posted after that time shall be considered as posted on the next collection day.
If a test item is posted after the last collection time, then the day of induction I should be adjusted to the next working day for this type of mail. Restricted collections, e.g. later collection times for delivery within a local area, may be taken into account provided they have been advertised to customers.
It is necessary to ensure that panellists can identify the delivery of the item to the address, or the receipt of the item to a named individual.
If P.O. Boxes are to be included in the sample, panellists will need to be able to confirm that they collect the mail daily after the published pick-up time.
If there are items included In the survey which are not Ietterbox friendly or for some other reason cannot be delivered without the presence of the panellist,. it is the first attempt to deliver that should count as the date of delivery if the date of the first attempt to deliver can be retrieved from a written notification.
Only valid test mail items shall be included in the calculations.BS/EN 13850–2020 pdf download.