A waterless urinal for a vehicle, the urinal including a fluid bowl having a drain, and a waterless urinal cartridge disposed within the drain. The cartridge includes a housing having a waste reservoir disposed within the housing that holds a predetermined volume of urine, and a drainage aperture configured so that an amount of urine exceeding the predetermined volume of urine flows through the drainage aperture to exit the housing. A cover is coupled to the housing and forms part of a surface contour of the bowl, the cover includes a sealing fluid reservoir and fluid passages for directing urine from the bowl to the sealing fluid reservoir. The sealing fluid reservoir is in communication with an internal cavity of the housing, the waste reservoir includes at least one fluid flow control feature configured to restrain urine movement within the waste reservoir in response to a change in vehicle dynamics.