در این ارائه بصورت اجمالی سری استاندارد اروپایی 13848 در خصوص پارامترهای هندسی خط معرفی اجمالی شده است. همچنین بخش 5 و 6 استاندادر که مرتبط با ارزیابی و سنجش وضعیت پارامترهای هندسی بوده است نیز مرور و موارد مهم آن بررسی شده است
10. کنيم می مرور را زیر استاندادرهای:
EN 13848-1 :Part 1: Characterization of track geometry
EN 13848-5: Part 5: Geometric quality levels
EN 13848-6: Part 6: Characterization of track geometry quality
19. Assessment of track geometric quality
extreme values of isolated defects;
standard deviation over a defined length, typically 200 m;
mean value.
20. Assessment Level
ImmediateAction Limit (IAL): refers to the value which, if exceeded,
requires taking measures to reduce the risk of derailment to an acceptable level.This
can be done either by closing the line, reducing speed or by correction of track
geometry;
Intervention Limit (IL): refers to the value which, if exceeded,
requires corrective maintenance in order that the immediate action limit shall not be
reached before the next inspection;
Alert Limit (AL):refers to the value which, if exceeded,
requires that the track geometry condition is analyzed and considered in the regularly
planned maintenance operations.