Bridge toll chart
This chart models traffic patterns over the Queensboro bridge and lets users explore the trade-offs between tolls and traffic congestion.
Turning the dial to the left, decreases the toll to $0 and this causes increased vehicle congestion and travel time. The graph represents this by displaying an increased amount of vehicle icons moving slowly across the page.
Turning the dial slightly to the right, increases the toll cost but decreases congestion and travel time. The graph displays less vehicle icons moving across the page at a faster pace.