{"abstract":"Yellow and all-red intervals returns a wrong result when grade percent is used as a decimal fraction.","category":"Traffic signal timing plans","checks":8,"contract":"Input {speed_mph, grade_pct (uphill positive), reaction_tenths, decel ft/s^2, width_ft, veh_len_ft, crosswalk_ft, ped}. v = 1.467*speed ft/s; yellow = t + v/(2a + 2*32.2*grade/100), rounded UP to 0.1 s and clamped to [3.0, 6.0]; a non-positive denominator returns 'invalid'. All-red = (W + vehicle length)/v where W includes the far crosswalk when ped is true, rounded UP to 0.1 s and clamped to [1.0, 6.0]. Return tenths.","evaluation_group":"w2-traffic_signal_timing_plans-change-clearance","failed_approach":"Taking the absolute grade treats downgrades as upgrades, shortening yellow where it must lengthen.","family":"w2-traffic_signal_timing_plans-change-clearance-grade-percent","id":"FA-67906","implementations":{"attempt":{"sha256":"f8578de1b709e1a342fb3344e6a789dff58a8d826f465a2cf60e23ed467d5d36","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nfrom fractions import Fraction\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    v = Fraction(x['speed_mph']) * Fraction(1467, 1000)\n    t = Fraction(x['reaction_tenths'], 10)\n    den = 2 * x['decel'] + 2 * Fraction(322, 10) * Fraction(abs(x['grade_pct']), 100)\n    if den <= 0:\n        return 'invalid'\n    yl = max(30, min(60, math.ceil((t + v / den) * 10)))\n    w = x['width_ft'] + (x['crosswalk_ft'] if x['ped'] else 0)\n    rd = max(10, min(60, math.ceil((w + x['veh_len_ft']) / v * 10)))\n    return {'yellow_tenths': yl, 'red_tenths': rd}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 30, 'grade_pct': 8, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 48, 'veh_len_ft': 16, 'crosswalk_ft': 15, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 15}), ({'speed_mph': 40, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 49, 'veh_len_ft': 16, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 40, 'red_tenths': 12}), ({'speed_mph': 30, 'grade_pct': 4, 'reaction_tenths': 15, 'decel': 8, 'width_ft': 134, 'veh_len_ft': 20, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 39, 'red_tenths': 35}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 50, 'grade_pct': -7, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 105, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 50, 'red_tenths': 18}), ({'speed_mph': 35, 'grade_pct': 3, 'reaction_tenths': 8, 'decel': 11, 'width_ft': 96, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 25}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16})], [({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 30, 'grade_pct': -2, 'reaction_tenths': 8, 'decel': 8, 'width_ft': 66, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 38, 'red_tenths': 20}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 30, 'grade_pct': 5, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 42, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 15}), ({'speed_mph': 65, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 12, 'width_ft': 59, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 10}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 12, 'width_ft': 102, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 36}), ({'speed_mph': 65, 'grade_pct': 8, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 131, 'veh_len_ft': 25, 'crosswalk_ft': 8, 'ped': True}, {'yellow_tenths': 58, 'red_tenths': 18})], [({'speed_mph': 30, 'grade_pct': 2, 'reaction_tenths': 10, 'decel': 12, 'width_ft': 116, 'veh_len_ft': 16, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 30}), ({'speed_mph': 20, 'grade_pct': -4, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 83, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 34, 'red_tenths': 36}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 12, 'decel': 11, 'width_ft': 72, 'veh_len_ft': 40, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 34}), ({'speed_mph': 70, 'grade_pct': 3, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 137, 'veh_len_ft': 20, 'crosswalk_ft': 15, 'ped': False}, {'yellow_tenths': 57, 'red_tenths': 16}), ({'speed_mph': 20, 'grade_pct': 8, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 100, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 45}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16})], [({'speed_mph': 65, 'grade_pct': -3, 'reaction_tenths': 10, 'decel': 8, 'width_ft': 87, 'veh_len_ft': 16, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 60, 'red_tenths': 11}), ({'speed_mph': 60, 'grade_pct': -5, 'reaction_tenths': 12, 'decel': 11, 'width_ft': 64, 'veh_len_ft': 25, 'crosswalk_ft': 8, 'ped': True}, {'yellow_tenths': 59, 'red_tenths': 12}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 70, 'grade_pct': 0, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 95, 'veh_len_ft': 25, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 13}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 20, 'grade_pct': 6, 'reaction_tenths': 10, 'decel': 11, 'width_ft': 90, 'veh_len_ft': 40, 'crosswalk_ft': 10, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 45}), ({'speed_mph': 25, 'grade_pct': 5, 'reaction_tenths': 15, 'decel': 12, 'width_ft': 50, 'veh_len_ft': 25, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 24})], [({'speed_mph': 20, 'grade_pct': -1, 'reaction_tenths': 10, 'decel': 11, 'width_ft': 79, 'veh_len_ft': 25, 'crosswalk_ft': 15, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 41}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 8, 'width_ft': 58, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 31, 'red_tenths': 22}), ({'speed_mph': 35, 'grade_pct': -7, 'reaction_tenths': 8, 'decel': 10, 'width_ft': 130, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': True}, {'yellow_tenths': 42, 'red_tenths': 32}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 70, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 115, 'veh_len_ft': 16, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 14}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 8, 'reaction_tenths': 15, 'decel': 11, 'width_ft': 125, 'veh_len_ft': 40, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 45})]]\nfor i, (args, expected) in enumerate(fixtures[N-1]):\n    check('timing oracle' + ' %d' % i, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"fd301ee85dab3fe4a7435b10dc9b9144e27f4b9d387e0fee32c692a7c765a569","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nfrom fractions import Fraction\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    v = Fraction(x['speed_mph']) * Fraction(1467, 1000)\n    t = Fraction(x['reaction_tenths'], 10)\n    den = 2 * x['decel'] + 2 * Fraction(322, 10) * Fraction(x['grade_pct'])\n    if den <= 0:\n        return 'invalid'\n    yl = max(30, min(60, math.ceil((t + v / den) * 10)))\n    w = x['width_ft'] + (x['crosswalk_ft'] if x['ped'] else 0)\n    rd = max(10, min(60, math.ceil((w + x['veh_len_ft']) / v * 10)))\n    return {'yellow_tenths': yl, 'red_tenths': rd}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 30, 'grade_pct': 8, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 48, 'veh_len_ft': 16, 'crosswalk_ft': 15, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 15}), ({'speed_mph': 40, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 49, 'veh_len_ft': 16, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 40, 'red_tenths': 12}), ({'speed_mph': 30, 'grade_pct': 4, 'reaction_tenths': 15, 'decel': 8, 'width_ft': 134, 'veh_len_ft': 20, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 39, 'red_tenths': 35}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 50, 'grade_pct': -7, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 105, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 50, 'red_tenths': 18}), ({'speed_mph': 35, 'grade_pct': 3, 'reaction_tenths': 8, 'decel': 11, 'width_ft': 96, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 25}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16})], [({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 30, 'grade_pct': -2, 'reaction_tenths': 8, 'decel': 8, 'width_ft': 66, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 38, 'red_tenths': 20}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 30, 'grade_pct': 5, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 42, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 15}), ({'speed_mph': 65, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 12, 'width_ft': 59, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 10}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 12, 'width_ft': 102, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 36}), ({'speed_mph': 65, 'grade_pct': 8, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 131, 'veh_len_ft': 25, 'crosswalk_ft': 8, 'ped': True}, {'yellow_tenths': 58, 'red_tenths': 18})], [({'speed_mph': 30, 'grade_pct': 2, 'reaction_tenths': 10, 'decel': 12, 'width_ft': 116, 'veh_len_ft': 16, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 30}), ({'speed_mph': 20, 'grade_pct': -4, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 83, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 34, 'red_tenths': 36}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 12, 'decel': 11, 'width_ft': 72, 'veh_len_ft': 40, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 34}), ({'speed_mph': 70, 'grade_pct': 3, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 137, 'veh_len_ft': 20, 'crosswalk_ft': 15, 'ped': False}, {'yellow_tenths': 57, 'red_tenths': 16}), ({'speed_mph': 20, 'grade_pct': 8, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 100, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 45}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16})], [({'speed_mph': 65, 'grade_pct': -3, 'reaction_tenths': 10, 'decel': 8, 'width_ft': 87, 'veh_len_ft': 16, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 60, 'red_tenths': 11}), ({'speed_mph': 60, 'grade_pct': -5, 'reaction_tenths': 12, 'decel': 11, 'width_ft': 64, 'veh_len_ft': 25, 'crosswalk_ft': 8, 'ped': True}, {'yellow_tenths': 59, 'red_tenths': 12}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 70, 'grade_pct': 0, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 95, 'veh_len_ft': 25, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 13}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 20, 'grade_pct': 6, 'reaction_tenths': 10, 'decel': 11, 'width_ft': 90, 'veh_len_ft': 40, 'crosswalk_ft': 10, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 45}), ({'speed_mph': 25, 'grade_pct': 5, 'reaction_tenths': 15, 'decel': 12, 'width_ft': 50, 'veh_len_ft': 25, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 24})], [({'speed_mph': 20, 'grade_pct': -1, 'reaction_tenths': 10, 'decel': 11, 'width_ft': 79, 'veh_len_ft': 25, 'crosswalk_ft': 15, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 41}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 8, 'width_ft': 58, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 31, 'red_tenths': 22}), ({'speed_mph': 35, 'grade_pct': -7, 'reaction_tenths': 8, 'decel': 10, 'width_ft': 130, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': True}, {'yellow_tenths': 42, 'red_tenths': 32}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 70, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 115, 'veh_len_ft': 16, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 14}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 8, 'reaction_tenths': 15, 'decel': 11, 'width_ft': 125, 'veh_len_ft': 40, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 45})]]\nfor i, (args, expected) in enumerate(fixtures[N-1]):\n    check('timing oracle' + ' %d' % i, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"942c2c053310d24066e2ae07cd16c7ac0d63ce82e4e48ba71f4b07ad36cc72c4","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nfrom fractions import Fraction\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    v = Fraction(x['speed_mph']) * Fraction(1467, 1000)\n    t = Fraction(x['reaction_tenths'], 10)\n    den = 2 * x['decel'] + 2 * Fraction(322, 10) * Fraction(x['grade_pct'], 100)\n    if den <= 0:\n        return 'invalid'\n    yl = max(30, min(60, math.ceil((t + v / den) * 10)))\n    w = x['width_ft'] + (x['crosswalk_ft'] if x['ped'] else 0)\n    rd = max(10, min(60, math.ceil((w + x['veh_len_ft']) / v * 10)))\n    return {'yellow_tenths': yl, 'red_tenths': rd}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 30, 'grade_pct': 8, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 48, 'veh_len_ft': 16, 'crosswalk_ft': 15, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 15}), ({'speed_mph': 40, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 49, 'veh_len_ft': 16, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 40, 'red_tenths': 12}), ({'speed_mph': 30, 'grade_pct': 4, 'reaction_tenths': 15, 'decel': 8, 'width_ft': 134, 'veh_len_ft': 20, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 39, 'red_tenths': 35}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 50, 'grade_pct': -7, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 105, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 50, 'red_tenths': 18}), ({'speed_mph': 35, 'grade_pct': 3, 'reaction_tenths': 8, 'decel': 11, 'width_ft': 96, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 25}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16})], [({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 30, 'grade_pct': -2, 'reaction_tenths': 8, 'decel': 8, 'width_ft': 66, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 38, 'red_tenths': 20}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 30, 'grade_pct': 5, 'reaction_tenths': 12, 'decel': 12, 'width_ft': 42, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 15}), ({'speed_mph': 65, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 12, 'width_ft': 59, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 10}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 12, 'width_ft': 102, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 36}), ({'speed_mph': 65, 'grade_pct': 8, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 131, 'veh_len_ft': 25, 'crosswalk_ft': 8, 'ped': True}, {'yellow_tenths': 58, 'red_tenths': 18})], [({'speed_mph': 30, 'grade_pct': 2, 'reaction_tenths': 10, 'decel': 12, 'width_ft': 116, 'veh_len_ft': 16, 'crosswalk_ft': 8, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 30}), ({'speed_mph': 20, 'grade_pct': -4, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 83, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 34, 'red_tenths': 36}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 12, 'decel': 11, 'width_ft': 72, 'veh_len_ft': 40, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 34}), ({'speed_mph': 70, 'grade_pct': 3, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 137, 'veh_len_ft': 20, 'crosswalk_ft': 15, 'ped': False}, {'yellow_tenths': 57, 'red_tenths': 16}), ({'speed_mph': 20, 'grade_pct': 8, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 100, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 45}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16})], [({'speed_mph': 65, 'grade_pct': -3, 'reaction_tenths': 10, 'decel': 8, 'width_ft': 87, 'veh_len_ft': 16, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 60, 'red_tenths': 11}), ({'speed_mph': 60, 'grade_pct': -5, 'reaction_tenths': 12, 'decel': 11, 'width_ft': 64, 'veh_len_ft': 25, 'crosswalk_ft': 8, 'ped': True}, {'yellow_tenths': 59, 'red_tenths': 12}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 70, 'grade_pct': 0, 'reaction_tenths': 12, 'decel': 8, 'width_ft': 95, 'veh_len_ft': 25, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 13}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 20, 'grade_pct': 6, 'reaction_tenths': 10, 'decel': 11, 'width_ft': 90, 'veh_len_ft': 40, 'crosswalk_ft': 10, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 45}), ({'speed_mph': 25, 'grade_pct': 5, 'reaction_tenths': 15, 'decel': 12, 'width_ft': 50, 'veh_len_ft': 25, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 24})], [({'speed_mph': 20, 'grade_pct': -1, 'reaction_tenths': 10, 'decel': 11, 'width_ft': 79, 'veh_len_ft': 25, 'crosswalk_ft': 15, 'ped': True}, {'yellow_tenths': 30, 'red_tenths': 41}), ({'speed_mph': 30, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 60, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 33, 'red_tenths': 19}), ({'speed_mph': 25, 'grade_pct': 0, 'reaction_tenths': 8, 'decel': 8, 'width_ft': 58, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 31, 'red_tenths': 22}), ({'speed_mph': 35, 'grade_pct': -7, 'reaction_tenths': 8, 'decel': 10, 'width_ft': 130, 'veh_len_ft': 20, 'crosswalk_ft': 12, 'ped': True}, {'yellow_tenths': 42, 'red_tenths': 32}), ({'speed_mph': 65, 'grade_pct': -7, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 120, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 16}), ({'speed_mph': 70, 'grade_pct': 0, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 115, 'veh_len_ft': 16, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 60, 'red_tenths': 14}), ({'speed_mph': 45, 'grade_pct': -4, 'reaction_tenths': 10, 'decel': 10, 'width_ft': 80, 'veh_len_ft': 20, 'crosswalk_ft': 10, 'ped': True}, {'yellow_tenths': 48, 'red_tenths': 17}), ({'speed_mph': 25, 'grade_pct': 8, 'reaction_tenths': 15, 'decel': 11, 'width_ft': 125, 'veh_len_ft': 40, 'crosswalk_ft': 12, 'ped': False}, {'yellow_tenths': 30, 'red_tenths': 45})]]\nfor i, (args, expected) in enumerate(fixtures[N-1]):\n    check('timing oracle' + ' %d' % i, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic, bounded toy model with a stipulated contract; it makes no claim of conformance to any agency manual or standard. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-traffic_signal_timing_plans-change-clearance-grade-percent","generated_at":"2026-09-29T14:47:57.220200+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Signal timing arithmetic is exact and integer or rational; a wrong rule silently produces unsafe or inefficient timing plans.","repair":"Restore the grade percentage rule so that the step reads `Fraction(x['grade_pct'], 100)`.","root_cause":"The percent grade is not divided by 100, so any grade dominates the deceleration term.","sha256":"7fec7d5a7f6b3e16494519de1060da703ee7730a0a60664af74fa5a511efce4f","title":"Yellow and all-red intervals: grade percent is used as a decimal fraction · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":44.87,"exit_code":1,"observations":[{"actual":{"red_tenths":19,"yellow_tenths":33},"check":"timing oracle 0","expected":{"red_tenths":19,"yellow_tenths":33},"passed":true},{"actual":{"red_tenths":15,"yellow_tenths":30},"check":"timing oracle 1","expected":{"red_tenths":15,"yellow_tenths":30},"passed":true},{"actual":{"red_tenths":12,"yellow_tenths":40},"check":"timing oracle 2","expected":{"red_tenths":12,"yellow_tenths":40},"passed":true},{"actual":{"red_tenths":35,"yellow_tenths":39},"check":"timing oracle 3","expected":{"red_tenths":35,"yellow_tenths":39},"passed":true},{"actual":{"red_tenths":17,"yellow_tenths":40},"check":"timing oracle 4","expected":{"red_tenths":17,"yellow_tenths":48},"passed":false},{"actual":{"red_tenths":18,"yellow_tenths":38},"check":"timing oracle 5","expected":{"red_tenths":18,"yellow_tenths":50},"passed":false},{"actual":{"red_tenths":25,"yellow_tenths":30},"check":"timing oracle 6","expected":{"red_tenths":25,"yellow_tenths":30},"passed":true},{"actual":{"red_tenths":16,"yellow_tenths":49},"check":"timing oracle 7","expected":{"red_tenths":16,"yellow_tenths":60},"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"timing oracle 0\", \"actual\": {\"yellow_tenths\": 33, \"red_tenths\": 19}, \"expected\": {\"yellow_tenths\": 33, \"red_tenths\": 19}, \"passed\": true}, {\"check\": \"timing oracle 1\", \"actual\": {\"yellow_tenths\": 30, \"red_tenths\": 15}, \"expected\": {\"yellow_tenths\": 30, \"red_tenths\": 15}, \"passed\": true}, {\"check\": \"timing oracle 2\", \"actual\": {\"yellow_tenths\": 40, \"red_tenths\": 12}, \"expected\": {\"yellow_tenths\": 40, \"red_tenths\": 12}, \"passed\": true}, {\"check\": \"timing oracle 3\", \"actual\": {\"yellow_tenths\": 39, \"red_tenths\": 35}, \"expected\": {\"yellow_tenths\": 39, \"red_tenths\": 35}, \"passed\": true}, {\"check\": \"timing oracle 4\", \"actual\": {\"yellow_tenths\": 40, \"red_tenths\": 17}, \"expected\": {\"yellow_tenths\": 48, \"red_tenths\": 17}, \"passed\": false}, {\"check\": \"timing oracle 5\", \"actual\": {\"yellow_tenths\": 38, \"red_tenths\": 18}, \"expected\": {\"yellow_tenths\": 50, \"red_tenths\": 18}, \"passed\": false}, {\"check\": \"timing oracle 6\", \"actual\": {\"yellow_tenths\": 30, \"red_tenths\": 25}, \"expected\": {\"yellow_tenths\": 30, \"red_tenths\": 25}, \"passed\": true}, {\"check\": \"timing oracle 7\", \"actual\": {\"yellow_tenths\": 49, \"red_tenths\": 16}, \"expected\": {\"yellow_tenths\": 60, \"red_tenths\": 16}, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":43.064,"exit_code":1,"observations":[{"actual":{"red_tenths":19,"yellow_tenths":33},"check":"timing oracle 0","expected":{"red_tenths":19,"yellow_tenths":33},"passed":true},{"actual":{"red_tenths":15,"yellow_tenths":30},"check":"timing oracle 1","expected":{"red_tenths":15,"yellow_tenths":30},"passed":true},{"actual":{"red_tenths":12,"yellow_tenths":40},"check":"timing oracle 2","expected":{"red_tenths":12,"yellow_tenths":40},"passed":true},{"actual":{"red_tenths":35,"yellow_tenths":30},"check":"timing oracle 3","expected":{"red_tenths":35,"yellow_tenths":39},"passed":false},{"actual":"invalid","check":"timing oracle 4","expected":{"red_tenths":17,"yellow_tenths":48},"passed":false},{"actual":"invalid","check":"timing oracle 5","expected":{"red_tenths":18,"yellow_tenths":50},"passed":false},{"actual":{"red_tenths":25,"yellow_tenths":30},"check":"timing oracle 6","expected":{"red_tenths":25,"yellow_tenths":30},"passed":true},{"actual":"invalid","check":"timing oracle 7","expected":{"red_tenths":16,"yellow_tenths":60},"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"timing oracle 0\", \"actual\": {\"yellow_tenths\": 33, \"red_tenths\": 19}, \"expected\": {\"yellow_tenths\": 33, \"red_tenths\": 19}, \"passed\": true}, {\"check\": \"timing oracle 1\", \"actual\": {\"yellow_tenths\": 30, \"red_tenths\": 15}, \"expected\": {\"yellow_tenths\": 30, \"red_tenths\": 15}, \"passed\": true}, {\"check\": \"timing oracle 2\", \"actual\": {\"yellow_tenths\": 40, \"red_tenths\": 12}, \"expected\": {\"yellow_tenths\": 40, \"red_tenths\": 12}, \"passed\": true}, {\"check\": \"timing oracle 3\", \"actual\": {\"yellow_tenths\": 30, \"red_tenths\": 35}, \"expected\": {\"yellow_tenths\": 39, \"red_tenths\": 35}, \"passed\": false}, {\"check\": \"timing oracle 4\", \"actual\": \"invalid\", \"expected\": {\"yellow_tenths\": 48, \"red_tenths\": 17}, \"passed\": false}, {\"check\": \"timing oracle 5\", \"actual\": \"invalid\", \"expected\": {\"yellow_tenths\": 50, \"red_tenths\": 18}, \"passed\": false}, {\"check\": \"timing oracle 6\", \"actual\": {\"yellow_tenths\": 30, \"red_tenths\": 25}, \"expected\": {\"yellow_tenths\": 30, \"red_tenths\": 25}, \"passed\": true}, {\"check\": \"timing oracle 7\", \"actual\": \"invalid\", \"expected\": {\"yellow_tenths\": 60, \"red_tenths\": 16}, \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":44.481,"exit_code":0,"observations":[{"actual":{"red_tenths":19,"yellow_tenths":33},"check":"timing oracle 0","expected":{"red_tenths":19,"yellow_tenths":33},"passed":true},{"actual":{"red_tenths":15,"yellow_tenths":30},"check":"timing oracle 1","expected":{"red_tenths":15,"yellow_tenths":30},"passed":true},{"actual":{"red_tenths":12,"yellow_tenths":40},"check":"timing oracle 2","expected":{"red_tenths":12,"yellow_tenths":40},"passed":true},{"actual":{"red_tenths":35,"yellow_tenths":39},"check":"timing oracle 3","expected":{"red_tenths":35,"yellow_tenths":39},"passed":true},{"actual":{"red_tenths":17,"yellow_tenths":48},"check":"timing oracle 4","expected":{"red_tenths":17,"yellow_tenths":48},"passed":true},{"actual":{"red_tenths":18,"yellow_tenths":50},"check":"timing oracle 5","expected":{"red_tenths":18,"yellow_tenths":50},"passed":true},{"actual":{"red_tenths":25,"yellow_tenths":30},"check":"timing oracle 6","expected":{"red_tenths":25,"yellow_tenths":30},"passed":true},{"actual":{"red_tenths":16,"yellow_tenths":60},"check":"timing oracle 7","expected":{"red_tenths":16,"yellow_tenths":60},"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"timing oracle 0\", \"actual\": {\"yellow_tenths\": 33, \"red_tenths\": 19}, \"expected\": {\"yellow_tenths\": 33, \"red_tenths\": 19}, \"passed\": true}, {\"check\": \"timing oracle 1\", \"actual\": {\"yellow_tenths\": 30, \"red_tenths\": 15}, \"expected\": {\"yellow_tenths\": 30, \"red_tenths\": 15}, \"passed\": true}, {\"check\": \"timing oracle 2\", \"actual\": {\"yellow_tenths\": 40, \"red_tenths\": 12}, \"expected\": {\"yellow_tenths\": 40, \"red_tenths\": 12}, \"passed\": true}, {\"check\": \"timing oracle 3\", \"actual\": {\"yellow_tenths\": 39, \"red_tenths\": 35}, \"expected\": {\"yellow_tenths\": 39, \"red_tenths\": 35}, \"passed\": true}, {\"check\": \"timing oracle 4\", \"actual\": {\"yellow_tenths\": 48, \"red_tenths\": 17}, \"expected\": {\"yellow_tenths\": 48, \"red_tenths\": 17}, \"passed\": true}, {\"check\": \"timing oracle 5\", \"actual\": {\"yellow_tenths\": 50, \"red_tenths\": 18}, \"expected\": {\"yellow_tenths\": 50, \"red_tenths\": 18}, \"passed\": true}, {\"check\": \"timing oracle 6\", \"actual\": {\"yellow_tenths\": 30, \"red_tenths\": 25}, \"expected\": {\"yellow_tenths\": 30, \"red_tenths\": 25}, \"passed\": true}, {\"check\": \"timing oracle 7\", \"actual\": {\"yellow_tenths\": 60, \"red_tenths\": 16}, \"expected\": {\"yellow_tenths\": 60, \"red_tenths\": 16}, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}