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This document provides definitions, symbols, mechanical requirements, certification test procedure, electronic subsystem requirements and user.s manual for advanced pedestrian legform impactor (aPLI), a standardized pedestrian legform impactor with an upper mass for pedestrian subsystem testing of road vehicles. It is applicable to impact tests involving:

.     vehicles of category M1, except vehicles with the maximum mass above 2 500 kg and which are derived from N1 category vehicles and where the driver.s position, R-point, is either forward of the front axle or longitudinally rearwards of the front axle transverse centreline by a maximum of 1 100 mm;

.     vehicles of category N1, except where the driver.s position, R-point, is either forward of the front axle or longitudinally rearwards of the front axle transverse centreline by a maximum of 1 100 mm;

.     impacts to the bumper test area as defined by UN R127^[1] and UN GTR No.9^[2];

.     pedestrian subsystem tests involving use of a legform for the purpose of evaluating compliance with vehicle safety standards.