DAVAO CITY, Philippines—Philippine President-elect Rodrigo Duterte outlined plans on Monday to curb social freedoms and impose more order on this often unruly nation by cracking down on a range of social ills.

Elected a week ago on a tough law-and-order platform, Mr. Duterte told reporters in his home city of Davao that he was declaring a Singapore-style war on antisocial behavior, promising to ban smoking and drinking alcohol in public places, and to crack down on speeding and drunken driving. He pledged to restore the death penalty, which was suspended in 2006, and allow police to shoot on sight people suspected of involvement in organized crime.

Parents who allow their children out after a 10 p.m. curfew will be prosecuted for “negligence” and taxi drivers will be compelled to carry change to stamp out the common practice of overcharging passengers, Mr. Duterte said. He also promised to get tough on noise pollution so that people could get a good night’s sleep.

“These are the things I want to correct right at the beginning,” said Mr. Duterte, who will take office on June 30 after Congress ratifies the election results.

Filipinos elected Mr. Duterte by a large margin, according to unofficial results, handing the 71-year-old a single, six-year term.