In SIDRA INTERSECTION, Level of Service is not calculated for the intersection as a whole, or for major road approaches for two-way sign-controlled intersections (stop sign or give-way/yield sign). "Not Applicable" is displayed in SIDRA INTERSECTION output reports (Movement Summary, Intersection Summary, Lane Summary, LOS Summary). This is because the uncontrolled major road movements experience little delay at two-way sign-controlled intersections, and as a result, the average delay for the intersection, or the major road approaches, does not reflect the delay levels of minor movements subject to sign control or opposed turns from the major road. This is in line with the HCM Edition 6 specification for two-way stop sign control.