EVNow
Well-Known Member
We all understand each test needs to be done for 5 minutes.I am not being pedantic, you are just not comprehending what you are reading. Read the documents again and then again. It is a battery of tests to assess the capability of the system. It is not a single 5 minutes test. Pages 60 through 64 list all the scenarios and test parameter variations that need to be tested. How are all those going to fit within a single 5 minutes test time as you incorrectly state?
What the document states, and is easy to understand is that when a given scenario or combination thereof is being assessed, the test must be done with a minimum test duration of 5 minutes. Meaning that the test may not be executed less than 5 minutes into a given scenario that is being assessed. Moreover, the manufacturer is obliged to provide documentation of their own internal testing to be used to assess their system.
Duration: the time during which something continues or lasts.
Test Specifications for ALKS
1. Introduction
This annex defines tests with the purpose to verify the technical requirements
on ALKS.
Until such time that specific test provisions have been agreed, the Technical
Service shall ensure that the ALKS is subject to at least the tests outlined in
Annex 5. The specific test parameters for each test shall be selected by the
Technical Service and shall be recorded in the test report in such a manner that
allows traceability and repeatability of the test setup.
Pass- and Fail-Criteria for tests are derived solely from the technical
requirements in paragraphs 5 to 7 of the Regulation. These requirements are
worded in a way that they allow the derivation of pass-fail-criteria not only for
a given set of test parameters, but for any combination of parameters in which
the system is designed to work (e.g. operating speed range, operating lateral
acceleration range, curvature range as contained in the system boundaries).
The test specifications in this document are meant to be a minimum set of tests,
the technical service authorities may perform any other test within the system
boundaries and may then compare the measured results against the
requirements (concrete: expected test outcome).
3.2. Test parameter variation
The manufacturer shall declare the system boundaries to the Technical Service.
The Technical Service shall define different combinations of test parameters
(e.g. present speed of the ALKS vehicle, type and offset of target, curvature of
lane) in order to cover scenarios in which a collision shall be avoided by the
system as well as those in which a collision is not expected to be avoided,
where applicable.
If this is deemed justified, the Technical Service may test additionally any
other combination of parameters.
If a collision cannot be avoided for some test parameters, the manufacturer
shall demonstrate either by documentation or, if possible, by
verification/testing that the system doesn’t unreasonably switch its control
strategy.
How can anyone read all this and conclude that they only require a 5 minutes test to validate and approve the system?
You would be happy if the test for lane keeping happens for 5 minutes but doesn’t take any variations in weather, traffic conditions, marking conditions, light conditions, curvatures, huge trucks next to you etc etc etc etc are not tested ?