I believe some of the bigger rickshaw hire companies do participate in a voluntary registration/licensing system, though obviously this would be better if universal.
I trust that by "vehicle" you meant to say "motor vehicle". Bicycles are already vehicles anyway, and let's not forget it :-)
I trust that by "vehicle" you meant to say "motor vehicle". Bicycles are already vehicles anyway, and let's not forget it :-)

which buy what I know about the motors the trikes (depending on which manufacturer has made the trike) The trikes will be over 160kg unladen then add the rider and 2 or 3 blokes. I know of No bicycle disk brakes that can stop that fast at 20+ mpa.