OK - initial quick measurements of that multi-gate thing, as I was passing there anyway...
Max height for fitting under the two tall bits on the right of the picture is 1.15m (measured both of them)
Max width from the right-hand edge of the middle-height bit to an estimated perpendicular line between the two taller bits is at least 1m
I didn't have the time to work it out exactly, but can go back another time and work it out properly. I was using a tape that flexed slightly in the wind, and have erred on the side of caution.
Looks OK for Mango & Quest velomobiles, and ice trikes if they are steered straight and without sideways wobbles ;-).
Hope this is helpful as a starter.