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Mark Dewhurst Automotive Engineering

LT2 checklist 1.0.0

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LT2 Lane change manoeuvre test


The intent of these testing procedures is to subjectively determine the road holding ability and handling characteristics of vehicles that are required to be tested by other Sections of VSB 14. Testing is usually called for when vehicles are modified in such a way as to cause a significant change in the height of a vehicle’s centre of mass, and/or a significant change in the longitudinal centre of mass, such that it affects the way a vehicle handles.

These tests are applicable only to vehicles with a Gross Vehicle Mass (GVM) up to and including 3.5 tonne.
The test must be carried out by an experienced test driver, who is required to produce a written report on the handling characteristics of the vehicle. Only when the owner can demonstrate prior experience as a test driver can he or she test his or her own vehicle. Since these are subjective tests, it is not sufficient for the driver to have negotiated the test successfully - the driver must also be confident that the vehicle was safe to drive.

The test procedure utilises the test track described in the following International Organization for Standardization (ISO), International Standard.
ISO Technical Report 3888-1:1999- Passenger cars - Test Track for a Severe Lane-Change Manoeuvre – Part 1: Double lane change test.
The procedure consists of driving a vehicle through a set track that simulates an emergency lane-change manoeuvre. The vehicle is driven from its initial lane to another lane (parallel to the initial lane), then returning to the initial lane. The length of each track section remains constant whilst the track width is a function of the test vehicle width.
The lane-change testing must be conducted under the guidance of a Signatory.
The lane-change track must be negotiated by skilled drivers with automotive road testing experience.

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