Managed lanes provide a faster, more reliable trip by adjusting the toll rate upward and downward based on congestion with the goal of maintaining a minimum speed in the toll lanes. The toll rate is posted, so the driver is aware of the rate before making a choice to use the managed lanes. As demand increases, the toll rate increases in order to maintain a reliable trip speed within the managed lanes.
Managed lanes can also reduce congestion in general-purpose lanes. For example, traffic decreased by 60 percent in non-tolled lanes along the LBJ Express.