The summit will be held Thursday and Friday at the Walter E. Washington Convention Center, but some parking restrictions are already in effect. Police officials also warned Monday that there will be street closures around the convention center and check points.
One of the roads that will close is part of the busy New York Avenue corridor.
Assistant D.C. Police Chief Lamar Green said the there will be heightened security after the terrorist attacks in Brussels. However, officials said there are no specific or credible threats to the District at this time.
“We will continue this posture for the foreseeable future,” Green said.
Luz Lazo contributed to this report.