A grayscale technical drawing labeled “PRELIMINARY/DRAFT” showing Alternative One, a proposed interchange configuration at Highway 401 and Brock Road. Highway 401 runs horizontally across the image, with Brock Road South crossing the Highway in the north–south direction. The design includes a newly relocated carpool lot in the north-west quadrant and multiple ramps connecting the highway to local roads with the north-to-west ramp located north of the proposed carpool lot. The design also includes a roundabout located south of the highway and a signalized intersection north of the highway. The roundabout in the southwest quadrant of Highway 401 and Brock Road South includes a note indicating a future fourth leg connection to Morrison Connection Road. Surrounding areas show nearby streets and residential blocks, providing context for how the interchange integrates into the local road network.