A mobility vehicle may comprise a frame, a first pivot arm, a second pivot arm, and a suspension assembly. The first pivot arm may be coupled to the frame and coupled to a drive wheel. The second pivot arm may be coupled to the frame and coupled to a ground engaging caster wheel. The suspension assembly may be coupled to the frame. The suspension assembly may include a first spring assembly and a second spring assembly. The first spring assembly may be disposed about a first spring axis and coupled to the first pivot arm. The second spring assembly may be disposed about a second spring axis and coupled to the second pivot arm. The first spring axis and the second spring axis may be disposed relative to each other at an angle of no greater than about 150 when the mobility vehicle is operating on horizontal ground.

A mobility vehicle may comprise a frame, a first pivot arm, a second pivot arm, and a suspension assembly. The first pivot arm may be coupled to the frame and coupled to a drive wheel. The second pivot arm may be coupled to the frame and coupled to a ground engaging caster wheel. The suspension assembly may be coupled to the frame. The suspension assembly may include a first spring assembly and a second spring assembly. The first spring assembly may be disposed about a first spring axis and coupled to the first pivot arm. The second spring assembly may be disposed about a second spring axis and coupled to the second pivot arm. The first spring axis and the second spring axis may be disposed relative to each other at an angle of no greater than about 150 when the mobility vehicle is operating on horizontal ground.

A vehicle comprising: a vehicle body; first and second wheel assemblies each having a rotation axis; first and second suspension linkages, each suspension linkage coupling a respective wheel assembly to the vehicle body to permit motion of the rotation axis of that wheel assembly relative to the vehicle body; a cross-vehicle spring having a first attachment point coupled to the first suspension linkage and a second attachment point coupled to the second suspension linkage; and a first active link coupling the first attachment point to the first suspension linkage, the first active link being configured to have: (i) a first mode in which the first active link permits motion of the first suspension linkage relative to the first attachment point to prohibit the cross-vehicle spring from constraining motion of the first and second suspension linkages; and (ii) a second mode in which the active link fixes the motion of the first suspension linkage relative to the first attachment point so that the cross-vehicle spring constrains motion of the first and second suspension linkages during common motion of the first and second suspension linkages.

A vehicle comprising: a vehicle body; first and second wheel assemblies each having a rotation axis; first and second suspension linkages, each suspension linkage coupling a respective wheel assembly to the vehicle body to permit motion of the rotation axis of that wheel assembly relative to the vehicle body; a cross-vehicle spring having a first attachment point coupled to the first suspension linkage and a second attachment point coupled to the second suspension linkage; and a first active link coupling the first attachment point to the first suspension linkage, the first active link being configured to have: (i) a first mode in which the first active link permits motion of the first suspension linkage relative to the first attachment point to prohibit the cross-vehicle spring from constraining motion of the first and second suspension linkages; and (ii) a second mode in which the active link fixes the motion of the first suspension linkage relative to the first attachment point so that the cross-vehicle spring constrains motion of the first and second suspension linkages during common motion of the first and second suspension linkages.