FIGURE 2.68 Examples of concurrent HOV lanes with buffer separation. (a) Without shoulders.
(b) With 10-ft-wide buffers. (c) With other buffer widths. Conversion: 1 ft 0.305 m. (From Guide
for the Design of High Occupancy Vehicle Facilities, American Association of State Highway and
Transportation Officials, Washington, D.C., 2004, with permission)