Abstract: A device, lockable onto the rim of a vehicle steering wheel, includes a portion in the form of a bar (1) projecting away from the wheel to obstruct steering. The device has a hook member (2) shaped to extend from one end to the other of a segment of a steering wheel rim via a path passing through the wheel with the member hooked over the wheel rim at one end of the segment. The device has a catch (10) movable relative to the hook member (2) and engageable with the steering wheel rim for locking the device to the wheel so that the hook member (2) is engaged about the rim at one end of the segment and the shank (3) of the hook member (2) is secured against the wheel rim at the other end of the segment.

Abstract: A vehicle tire valve cap is disclosed incorporating a tire pressure indicator which can be set to indicate a pressure appropriate to given circumstances. The cap comprises two components (1,2). The top component (2) snap-fastens into the body component (1) and can then be turned into any selected index position. The top component bears on its top face a digit (15) and adjacent that digit the top components has a sectoral cut-out (10) through which any one of a plurality of digits (7) on the body component (1) can be exposed by turning the top component into the appropriate position. The two digits thus displayed indicate the selected tire pressure value.