Abstract: A removable barrier adapted to co-operate with a concrete median barrier of a roadway to form, in situ, a barrier between a vehicle travelling in one direction on the roadway and a vehicle travelling in another direction, wherein:the removable barrier is adapted for movement such that, when desirable, the vehicle travelling in the one direction can transgress the barrier and travel on the opposite side of the roadway, and further whereinthe removable barrier comprises at least one shell conforming substantially to the outer shape of the concrete median barrier and is adapted for sliding movement relative to the concrete median barrier.

Abstract: Pavement line marking apparatus adapted to detect old line markings on a pavement surface and to repaint such markings or alternatively to paint new line markings to a desired pattern, the apparatus comprising a support beam (11) with a marking detection element (80) arranged at one end such that any old line markings are detectable thereby, upon movement of the detection element 80 over the desired pavement surface, paint applicator means (75, 76) arranged mounted from the support boom rearwardly from the marking detection element (80) for movement transversely of the direction of movement of the support boom (11) along the desired pavement surface, and control means actuable in response to a signal from the marking detection element to move said paint applicator means to a position over the old line markings and to operate the paint applicator means to deposit paint along the old line markings on the markings on the pavement surface.

Abstract: Pavement line marking apparatus adapted to detect old line markings on a pavement surface and to repaint such markings or alternatively to paint new line markings to a desired pattern, the apparatus comprising a support beam (11) with a marking detection element (80) arranged at one end such that any old line markings are detectable thereby, upon movement of the detection element 80 over the desired pavement surface, paint applicator means (75,76) arranged mounted from the support boom rearwardly from the marking detection element (80) for movement transversely of the direction of movement of the support boom (11) along the desired pavement surface, and control means actuable in response to a signal from the marking detection element to move said paint applicator means to a position over the old line markings and to operate the paint applicator means to deposit paint along the old line markings on the pavement surface.