To accommodate both positions , the gtr will apply to all vehicles except buses , with exceptions for specific door designs . The gtr incorporates the definitions of Category 1-1 vehicles and Category 2 vehicles developed in draft Special Resolution 1 ( S.R . 1 ) concerning common definitions and procedures to be used in global technical regulations , which will be submitted as an informal document at the one-hundred-and-thirty-fourth WP.29 session and with an expected adoption at the one-hundred-and-thirty-fifth WP.29 session .