Abstract: A motion simulator including a first track, a second track, and a passenger cart having a compartment configured to receive a passenger and movable linearly along the first track. A counter cart is movable along the second track to counter to the passenger cart. The motion stimulator is lightweight, transportable and is self-supporting such that it is operational to spin the platform supporting the carts and move the carts linearly without being mounted to a supporting surface. Omni-directional wheels effect angular movement of the passenger compartment in multiple directions.

Abstract: A seismic weigh-in-motion system (12) which utilizes a seismic sensor (32) mounted, off-pavement of the highway prior to the point at which the truck (10) enters the deceleration lane at the truck weighing station. The sensor (32) senses seismic vibrations which are transferred into the ground by the moving truck (10). Signals indicative of these vibrations are transmitted through a fiber optic cable (44) connected to a main processor (42) mounted in the weigh-in station. These vibration signals along with signals proportional to the speed of the truck (determined by speed detecting devices/processes (34, 36)) as the truck moves down the highway is processed in the processor (42) to provide an output which is indicative of the weight of the truck. Additional components such as soil temperature (28) and soil moisture content (30) measuring devices provide additional inputs to the processor (42) to increase accuracy of the system.