Module D - Slide 8


In alterations projects, you still have structural impracticability, equivalent facilitation, and construction tolerances, and technical infeasibility is added as an allowable reason to not build something exactly to the new construction standards.

An example might be some planned construction at an existing intersection, (upgrading of signal controller and replacement of signals) but the placement of APS is restricted due to buildings, poles and vaults near the corner. In that case, you should get APS installed as close as possible to new construction guidelines. For example, that may be a location where you must put two APS devices on the same pole, rather than on separated poles at the intersection. If you do that, document the decision and the reasons you decided on that decision. In general, the emphasis should be on meeting the new construction guidelines as well as possible. ADA language is “to the maximum extent feasible.”