Moyes D, Cleaton-Jones P, Lelliot J
S Afr Med J. 1979 Dec 1;56(23):1000-2.
The driving skills of 10 dental students were evaluated on three occasions on a driving simulator after exposure to air and 50% and 70% nitrous oxide in oxygen. Errors increased after exposure to nitrous oxide and were statistically significant during the middle of the test period. Driving after short exposure to nitrous oxide appears inadvisable.