Wheelchair containment and occupant retention systems for accessible transport vehicles designed for use by both sitting and standing passengers. Part 2. Systems for forward-facing wheelchair-seated passengers
State system for ensuring the uniformity of measurements. State verification schedule for measuring means of spectral, integral and reduced regular transmittance and optical density within the wavelength range from 0,2 to 50,0 um, diffused and regular reflections within the wavelength range from 0,2 to 20,0 um
