EOOS has developed a prototype for a "zero-emissions utility vehicle", or ZUV, which can be 3D-printed locally rather than having to be shipped around the world. More about ZUV is an electric tricycle that can be 3D-printed from plastic waste
Better To Transport is a tricycle made from recycled materials commonly found in Mexico City, with demountable components designed to be easily replaced over time. More about Thomas Hoogewerf tackles congestion in Mexico City with recycled plastic tricycle
Future Makers: in this movie filmed in Vancouver, Kody Baker explains how his start-up VeloMetro is hoping to convince people to switch to a cleaner, healthier form of transport with a car-like vehicle that you pedal like a bike. More about VeloMetro's pedal-powered Veemo vehicle aims to get people out of their cars
Transportation design studio Kolelinia has released an updated model of its three-wheeled Halfbike – which raised close to $1 million on Kickstarter in 2015 (+ movie). More about Kolelinia updates design for Halfbike pedal-powered scooter
Design and engineering sibling duo Gaspard and Lucas Tiné-Berès have created a prototype for a tricycle that allows riders to change direction by leaning to either side (+ movie). More about Cricket tricycle by Gaspard and Lucas Tiné-Berès is steered by leaning
This captioned video spotlights Halfbike, a three-wheeled vehicle designed by transportation start-up Kolelinia which allows riders to stand up while pedalling. More about Halfbike riders stand while pedalling to navigate the city
Transport design company Kolelinia has launched an updated version of its Halfbike – a three-wheeled vehicle similar to a pedal-powered Segway (+ movie). More about Halfbike II is a pedal-powered vehicle for navigating city streets
Experimental design agency The Future People has unveiled a prototype for a hybrid electric- and human-powered "car" at this year's North American International Auto Show in Detroit (+ slideshow). More about The Zeppelin aims to fuse the best bits of car and bicycle design
This tricycle designed for children by Vietnamese firm a21studio has been crafted from bamboo and finished with ropes. More about Bamboo tricycle by a21studio
This mobile home by Chinese studio dot Architects consists of a quilted cube attached to the back of a tricycle. More about Bao House by dot Architects
Athletes without the use of their lower body use cycles propelled by hand pedals in the road cycling events at the London 2012 Paralympics. More about Paralympic design: competitive handcycles
Beijing Design Week 2011: French artist Niko de la Faye could be found cycling around Beijing Design Week with a rotating map of the universe on the back of his tricycle. More about M2B by Niko de la Faye
Beijing Design Week 2011: a tricycle modified by Canadian artist Nicholas Hanna mimics the Chinese custom of writing temporary messages on the road with water. More about Water Calligraphy Device by Nicholas Hanna
Despite living in hilly San Francisco, designer Yves Behar of fuseproject has created a tricycle for local living. More about Local by fuseproject
Design Indaba 08: IDEO cofounder Bill Moggridge presented this concept tricycle that purifies water as the rider pedals, at the Design Indaba conference in Cape Town last month. More about Aquaduct by IDEO