This International Standard specifies tests and measurement methods for service brake systems and, where applicable, associated parking brake systems of two-wheeled mopeds (3-1) and three-wheeled mopeds (3-2) which are intended for use on public roads, in order to establish uniform worldwide test procedures for braking systems. This International Standard does not cover mopeds which: ⎯ have a maximum speed of less than 25 km/h; ⎯ are equipped for disabled riders. This International Standard sets out the following types of tests: ⎯ dynamic tests: ⎯ dry stop test (single brake control actuated); ⎯ wet brake test; ⎯ parking brake system test; ⎯ power-assisted brake system failure test