TEHRAN, Iran — Police closed dozens of clothing stores and hairdressers and stopped cars and pedestrians in a crackdown on women who do not abide by Iran’s strict Islamic dress code and men wearing fashions seen as too Western, the Iranian press reported yesterday.

The sweep, launched Saturday in some neighborhoods of Tehran, is part of an annual campaign aimed at enforcing dress codes that require women to wear long loose robes or coats and cover their hair in public. Many women — particularly in Tehran — push the boundaries of the code, wearing short, colorful coats that reveal the shape of the body and letting their headscarves slip to show much of their hair.

In past years, the government of hard-line President Ahmadinejad has launched the sweeps at the start of summer, when warmer temperatures bring more people into the streets of the capital and women dress lighter. During the crackdown, police stop women in the streets, issuing them warnings or even arresting them if their garb is deemed unsuitable. Men are also targeted for having long hair and other styles deemed too Western.

But the closure of shops appeared to be a new step, aimed at stopping the sale of shorter coats and lighter headscarves. The pro-reform daily Kargozaran reported yesterday that police were questioning women and men where they bought their clothes or had their hair done, then targeting the shops.