Abstract: An apparatus and system, preferably mounted on a service vehicle, provides synchronized application of fluid materials, either solid or liquid, to a vehicle travel surface in proportional amounts or spatially distributed proportions in response to user defined requirements and/or operation of a vehicle mounted component in response to conditions encountered in real time. A first embodiment is a vehicle mounted apparatus and system for coordinated application of a plurality of materials to a surface simultaneously and in desired proportions and/or widths automatically and/or selectively. A second embodiment includes a granular material distribution device and includes a plurality of liquid spray headers and pumping, means.

Abstract: A system and apparatus for detecting and evaluating surface conditions on a road surface from a moving vehicle as disclosed. The system comprises a sensor means for detecting the presence of deposited material on a road surface, detecting means for determining one or more characteristics of the material such as its freezing temperature, process means for converting a detected signal and display means for displaying the condition of the road surface. A first embodiment of the invention includes a collection device for collecting a sample of the surface materials and one or more sensors to detect the freezing point of the material. A second embodiment includes a collection chamber which can be isolated and its contents frozen so that the freeze temperature may be obtained irrespective of knowing the composition of the material.