The phrase "are allowed to restrict" is correct and usable in written English.
You can use it when discussing permissions or regulations regarding limitations or controls imposed by an authority or governing body.
Example: "Under the new policy, employees are allowed to restrict access to sensitive information."
Alternatives: "are permitted to limit" or "have the authority to constrain".
However, certain restrictions apply, for example the host state is allowed to restrict access to certain categories of employment only.
Everyone will be permitted to modify and redistribute GNU, but no distributor will be allowed to restrict its further redistribution.
Ensuring that Britain is allowed to restrict in-work benefits to EU migrants through an emergency brake.
While most Western countries will be allowed to restrict immigration for a few years, Europe will be a unified labor market by 2011.
In each of these three cases, nearly half said that colleges should be allowed to restrict these particular kinds of speech.
To the contrary, nations have always been allowed to restrict what their banks can regard as safe assets, and thus effectively to limit their holdings of foreign assets.
The CU said it had agreed to redraft some of its policies, but maintains that it should be allowed to restrict membership to only those who are practising Christians.
Under a 40-year permit issued to Alta by the Forest Service in 2002, the ski area is allowed to restrict any type of skiing device that creates an unnecessary risk to other skiers.
Last week in Brussels, representatives of the European Parliament, the European Commission and E.U. member governments reached a compromise on a measure setting out the terms under which the authorities would be allowed to restrict Internet access.
This is a new field, and it is legitimate to argue that governments should be allowed to restrict trade while health-and-safety research is ongoing erring on the side of protecting human life not corporate profits.
