How can construction or road closures affect the validity of a hundred-block location?

• A. They have no effect on the accuracy of locations.
• B. They only affect signage, not locations.
• C. They require abandoning the location.
• D. They can alter travel routes and block accessibility; verify with updated maps and dispatch guidance.

Answer: (D)

Construction or road closures change how you reach a hundred-block location. This system relies on a fixed grid and specific cross-street references to pinpoint a block, but when a road is closed, the usual route can be blocked or diverted, making the original reference harder or impossible to access as described. Because of that, you must verify the current route and accessibility with updated maps and dispatch guidance to ensure you can reach the correct block quickly. Signs on the ground may exist, but they don’t guarantee reachability if detours or closures block the actual path. You don’t abandon the location; you adjust by following the latest detours and guidance to locate and respond accurately.