The phrase "are impeded" is correct and usable in written English.
It can be used to describe a situation where progress or movement is hindered or obstructed.
Example: "The team's efforts to complete the project on time are impeded by unforeseen circumstances."
Alternatives: "are hindered" or "are obstructed".
Privatisation and other economic reforms are impeded by a secretive, Soviet-style bureaucracy.
"We are impeded by the law," said Juan de Zuniga Jr., the general counsel of the Philippine central bank.
Even well-endowed schools have otherwise talented students who are impeded by algebra, to say nothing of calculus and trigonometry.
Others said that the investigations are impeded by the fact that some elected officials in Washington support regime change in Southeast Asia.
He added, "As long as this dispute exists, we are impeded from being able to go ahead and make these available to other companies".
The drug's absorption is unaffected by eating, the company says, whereas absorption of both Viagra and Levitra are impeded by rich meals.
Some homeowners, eager to sell their homes before the value falls further, say they are impeded by loan servicers' inaction or incompetence.
Scientologists believe that human beings are impeded by negative memories from past lives, and that by applying Mr. Hubbard's "technology," they can reach a state known as clear.
Her efforts to make Lincoln Center a happening place are impeded by the musty thinking of certain constituents, especially the New York Philharmonic, which sees nothing wrong with the status quo and is tightly bound to the subscription series format.
Conceptualization, analysis and comparison are impeded by the usual problems with English terminology.
Developments of membrane water desalination are impeded by low water vapor flux across the membrane.
