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2021 Official Regulations

2021 Official Regulations

The aim of the Bridgestone World Solar Challenge is to stimulate research into, and development of, sustainable road transport. The Bridgestone World Solar Challenge is primarily a design competition. The regulatory philosophy is to provide the parameters on which to base the design, rather than specify exactly how to build a solar car. Science and technology evolve and to encourage the most innovative ideas, event requirements also evolve.

Participation in the 2021 Bridgestone World Solar Challenge calls for the design and construction of a solar car within given design parameters and driving the solar car across the continent of Australia in accordance with these regulations. 

Each Bridgestone World Solar Challenge is different. Revisions for the 16th Edition retain the clear distinction between Challenger and Cruiser Classes: Challenger Class cars will be efficient, and Cruiser Class cars will be both efficient and practical. 



Bridgestone World Solar Challenge 2021 Regulations Release Version 1.0


Regulation Bulletins

Regulation Bulletins provide additional information and clarity with regards to the Official Regulations and should be read and adopted in conjunction and with the same sense of importance.

Regulation Bulletin #1 - PVC Pat

Regulation Bulletin #2 - Registration Plates


Major changes for 2021 include:

  • Challenger Class solar cars requiring three or more wheels
  • New ground clearance requirements based on automotive standards
  • New turning circle requirements
  • Rear-wheel steering not being permitted
  • Solar collectors requiring low environmental toxicity (GaAs, CdTe and CuInSe2 will not be permitted)
  • "PVC Pat", our standard manikin, needing to fit into each seat
  • Teams needing to have the dynamic stability of their solar car certified
  • The emergency safe state not being allowed to have any voltage or current present outside of energy storage packs or the solar collector
  • Solar cars requiring daytime running lamps
  • The licence plate needing to be mounted at the rear of the solar car
  • Teams needing to have their solar cars re-certified after making significant repairs