Optimizing signal timing is considered a low-cost approach to reducing congestion. Based on data from six separate studies, the costs range from $2,500 to $3,100 per signal per update. While this range is reasonable, costs could be slightly more or less.
An executive agreement is an agreement entered into between a foreign government and the executive branch of the United States. Although the agreement binds the United States with as much force as a treaty, it is not as formal as a treaty and does not require Senate approval.
executive. n. 1. a. a person or group responsible for the administration of a project, activity, or business.