The necessity of improving and notably widening the test area on the bumper for the lower legform test was shown as the area of the bumper is quite restricted as a result of angled front fascia designs and protrusions or other features on the fascia of some vehicles that interact with the 60 degree planes that in the current test procedure define the test area . The decision was to discuss the whole subject in detail in a specific task force on the bumper test area ( TF-BTA ) .