When traffic control is required for a pipe repair, the cone taper length depends on which factor?

• A. Lane Width
• B. Traffic Volume
• C. Weather Conditions
• D. Length Of Time Of Lane Closure

Answer: (A)

The way you shape the lane taper is a geometric matter tied directly to how wide the lane remains open for traffic. When you close part of the lane for a pipe repair, the taper must extend far enough to give drivers a clear, gradual path from the closed lane into the open lane. The width of that open lane determines how long and how gradual the taper needs to be, because a wider lane changes the angle and distance over which vehicles must move to merge safely. In short, lane width sets the space available for the merge and the taper’s geometry, so it largely controls the taper length. Weather, traffic volume, or how long the lane is closed affect other aspects of the setup (like speed decisions, signage, and staffing), but the taper length itself is driven by how wide the lane is.