It looks like bans for odd/even license plates were used in Paris in 2014 [1] and 1997 [2], but not before then. However, a similar scheme was used to ration ga

It looks like bans for odd/even license plates were used in Paris in 2014 [1] and 1997 [2], but not before then. However, a similar scheme was used to ration gasoline in the US during the 70s [3]. The only source I can find for the claim about police confusion is the one cited by Wikipedia [4], whose reliability I'm inclined to doubt based on the 1997/1977 discrepancy. [1] https://www.npr.org/sections/thetwo-way/2014/03/17/290849704/to-clear-its-air-paris-tests-odd-or-even-driving-days https://www.npr.org/sections/thetwo-way/2014/03/17/290849704... [2] https://www.wired.com/1997/09/paris-smog/ https://www.wired.com/1997/09/paris-smog/ [3] https://www.npr.org/sections/pictureshow/2012/11/10/164792293/gas-lines-evoke-memories-oil-crises-in-the-1970s https://www.npr.org/sections/pictureshow/2012/11/10/16479229... [4] https://en.m.wikipedia.org/wiki/Odd%E2%80%93even_rationing#Dealing_with_0 https://en.m.wikipedia.org/wiki/Odd%E2%80%93even_rationing#D...