A personal ability vehicle (PMV) includes a frame with front and rear
subframes. A steering mechanism is mounted on the front subframe and
includes a steering front wheel connected to a tiller. The rear subframe
includes a suspension mount comprising a pair of rear support legs. An
anti-tip suspension includes a pair of trailing arms each mounting a
trailing wheel. Each trailing arm is pivotally mounted on a respective
support leg whereby the suspension is inevitable through a limited range
of motion about a transverse suspension pivotal axis. A pair of spring
assemblies are attached to the trailing arms and are adapted for
selectively engaging the support legs to provide a counter-rotational
torque force around the suspension pivotal axis in order to resist
backwards tipping of the PMV, for example, when it is ascending an
inclined sloping surface. Relatively uniform proportional, weight
distribution on said steering front, main and trailing wheels is
maintained throughout a range of loads.