Fatal road casualties between January 1 and August 7 have decreased one-fifth of the amount registered during the same period last year, according to the national road safety authority (ANRS).
Data from the PSP and GNR police forces shows that 277 people died this year on Portuguese roads as opposed to the 349 that perished in 2012 as a result of road accidents.
Lisbon, Aveiro and Porto were the most affected districts, registering 33, 32 and 31 mortal victims, respectively.
On the other hand, the least affected districts included Bragança and Viana do Castelo, with three casualties, and Vila Real with four.
The number of severely-injured people (1,036) decreased 17% compared to the previous year, as well as the number of individuals with minor injuries (20,111), which dropped 4.4%, the ANRS noted.