World Rugby has announced five law changes that will come into effect on a trial basis in 2017, including the automatic awarding of seven points for any penalty try.
The British and Irish Lions' Tests in New Zealand will be among a host of contests played under the amended rules, which were revealed on Friday.
In addition to an amendment to law nine, which will mean teams receive seven points for a penalty try without needing to attempt a conversion, World Rugby announced that lineouts will now be taken should a penalty be kicked into touch after time has elapsed.
Eight players from each side will be required to feature in uncontested scrums, when a team is reduced to 14 men, while there will also be alterations to rules relating to advantage and lineouts.
Bill Beaumont, the chairman of the global game's governing body, said: "World Rugby continually reviews the laws to ensure that the game is as enjoyable, simple and safe as possible at all levels.
"I would like to thank our unions for their full support throughout the process, the experts who evaluated the closed trial data and look forward to seeing the results of the global trial."
The one-year trial of the new laws will begin in the southern hemisphere on January 1 and in the northern hemisphere on August 1.