Simplified Highway Capacity Calculation Method for the Highway Performance Monitoring System

Appendix A. Generalized Service Volume Tables

The service volumes in the tables are the maximum values that can be maintained and still be within the Level of Service (LOS) range. For example in the first row of the freeway table, if the actual volume is less than or equal to 46,100, then it is LOS B. Therefore, the service volumes in the tables are the maximum volumes that can be achieved for that LOS category.

For roadways that are dual carriageways, AADT should be divided by two before entering the tables.

Table 13. Freeway generalized service volume table.
Area Type	Number Lanes	Truck Percent	Level of Service—B Service Volume	Level of Service—C Service Volume	Level of Service—D Service Volume	Level of Service—E Service Volume
Rural	4	0	46,100	62,000	74,800	84,700
Rural	4	10	43,900	59,000	71,200	80,700
Rural	4	20	41,900	56,300	68,000	77,000
Rural	4	30	40,100	53,900	65,000	73,700
Rural	6	0	69,200	93,000	112,200	127,100
Rural	6	10	65,900	88,500	106,900	121,100
Rural	6	20	62,900	84,500	102,000	115,600
Rural	6	30	60,100	80,800	97,600	110,500
Rural	8	0	92,200	124,000	149,600	169,500
Rural	8	10	87,800	118,100	142,500	161,400
Rural	8	20	83,800	112,700	136,000	154,100
Rural	8	30	80,200	107,800	130,100	147,400
Rural	10	0	115,300	155,000	187,100	211,900
Rural	10	10	109,800	147,600	178,100	201,800
Rural	10	20	104,800	140,900	170,000	192,600
Rural	10	30	100,300	134,800	162,600	184,200
Rural	12	0	138,400	186,000	224,500	254,300
Rural	12	10	131,800	177,100	213,800	242,200
Rural	12	20	125,800	169,100	204,100	231,200
Rural	12	30	120,300	161,700	195,200	221,100
Urban	4	0	43,700	60,100	73,100	83,000
Urban	4	10	41,600	57,200	69,600	79,100
Urban	4	20	39,700	54,600	66,400	75,500
Urban	4	30	38,000	52,200	63,600	72,200
Urban	6	0	65,600	90,100	109,700	124,600
Urban	6	10	62,500	85,800	104,400	118,600
Urban	6	20	59,600	81,900	99,700	113,200
Urban	6	30	57,000	78,300	95,400	108,300
Urban	8	0	87,500	120,200	146,200	166,100
Urban	8	10	83,300	114,400	139,300	158,200
Urban	8	20	79,500	109,200	132,900	151,000
Urban	8	30	76,100	104,500	127,200	144,400
Urban	10	0	109,400	150,200	182,800	207,600
Urban	10	10	104,200	143,100	174,100	197,700
Urban	10	20	99,400	136,600	166,200	188,700
Urban	10	30	95,100	130,600	159,000	180,500
Urban	12	0	131,300	180,300	219,400	249,200
Urban	12	10	125,000	171,700	208,900	237,300
Urban	12	20	119,300	163,900	199,400	226,500
Urban	12	30	114,100	156,700	190,800	216,700

Table 14. Multilane highway generalized service volume table.
Area Type	Number Lanes	Truck Percent	Level of Service—B Service Volume	Level of Service—C Service Volume	Level of Service—D Service Volume	Level of Service—E Service Volume
Rural	4	0	42,000	57,300	69,600	80,000
Rural	4	10	39,900	54,600	66,300	76,100
Rural	4	20	38,100	52,100	63,300	72,700
Rural	4	30	36,500	49,900	60,600	69,500
Rural	6	0	63,000	86,000	104,500	120,000
Rural	6	10	59,900	81,900	99,500	114,200
Rural	6	20	57,200	78,200	95,000	109,000
Rural	6	30	54,700	74,800	90,900	104,300
Rural	8	0	84,000	114,700	139,300	160,000
Rural	8	10	79,900	109,300	132,700	152,300
Rural	8	20	76,300	104,300	126,700	145,400
Rural	8	30	73,000	99,800	121,200	139,100
Rural	10	0	105,000	143,400	174,200	200,000
Rural	10	10	99,900	136,600	165,900	190,400
Rural	10	20	95,400	130,400	158,300	181,800
Rural	10	30	91,300	124,700	151,500	173,900
Urban	4	0	34,500	49,300	61,400	71,600
Urban	4	10	32,800	47,000	58,400	68,200
Urban	4	20	31,300	44,800	55,800	65,100
Urban	4	30	30,000	42,900	53,300	62,300
Urban	6	0	51,700	74,000	92,100	107,500
Urban	6	10	49,200	70,500	87,700	102,300
Urban	6	20	47,000	67,300	83,700	97,700
Urban	6	30	45,000	64,400	80,000	93,400
Urban	8	0	69,000	98,700	122,800	143,300
Urban	8	10	65,700	94,000	116,900	136,500
Urban	8	20	62,700	89,700	111,600	130,300
Urban	8	30	60,000	85,800	106,700	124,600
Urban	10	0	86,200	123,400	153,500	179,100
Urban	10	10	82,100	117,500	146,200	170,600
Urban	10	20	78,400	112,200	139,500	162,800
Urban	10	30	75,000	107,300	133,400	155,700

Table 15. Signalized highway generalized service volume table.
Number Lanes	% Green Time	Speed Limit	Level of Service—B Service Volume	Level of Service—C Service Volume	Level of Service—D Service Volume	Level of Service—E Service Volume
2	40	35	12,800	14,900	16,400	18,700
2	40	40	12,600	14,400	15,900	17,700
2	40	45	12,000	14,200	15,500	17,400
2	40	50	11,800	13,800	15,200	16,700
2	40	55	12,300	14,100	15,400	16,900
2	40	60	12,700	14,300	15,500	17,100
2	45	35	14,600	16,900	18,500	21,100
2	45	40	14,400	16,300	18,000	20,000
2	45	45	13,900	16,100	17,600	19,700
2	45	50	13,600	15,700	17,200	18,900
2	45	55	14,200	16,000	17,400	19,100
2	45	60	14,600	16,200	17,600	19,300
2	50	35	16,500	18,900	20,700	23,600
2	50	40	16,300	18,300	20,100	22,300
2	50	45	15,700	18,100	19,600	22,000
2	50	50	15,500	17,700	19,200	21,100
2	50	55	16,100	17,900	19,500	21,400
2	50	60	16,400	18,100	19,600	21,500
2	55	35	18,400	20,900	22,900	26,000
2	55	40	18,100	20,300	22,200	24,700
2	55	45	17,600	20,000	21,700	24,300
2	55	50	17,400	19,600	21,300	23,400
2	55	55	17,900	19,900	21,500	23,600
2	55	60	18,300	20,100	21,700	23,800
2	60	35	20,300	22,900	25,100	28,500
2	60	40	20,000	22,200	24,400	27,000
2	60	45	19,500	22,000	23,800	26,600
2	60	50	19,300	21,500	23,300	25,600
2	60	55	19,800	21,800	23,600	25,800
2	60	60	20,200	22,100	23,800	26,100
2	65	35	22,200	25,000	27,300	31,000
2	65	40	21,900	24,200	26,500	29,400
2	65	45	21,400	24,000	25,900	28,900
2	65	50	21,200	23,500	25,400	27,800
2	65	55	21,700	23,800	25,700	28,100
2	65	60	22,100	24,000	25,900	28,300
2	70	35	24,100	27,000	29,500	33,500
2	70	40	23,800	26,200	28,700	31,700
2	70	45	23,300	26,000	28,000	31,200
2	70	50	23,100	25,400	27,500	30,100
2	70	55	23,600	25,800	27,800	30,400
2	70	60	24,000	26,000	28,000	30,600
2	75	35	26,000	29,100	31,700	36,000
2	75	40	25,700	28,200	30,800	34,100
2	75	45	25,200	28,000	30,100	33,600
2	75	50	25,000	27,400	29,600	32,300
2	75	55	25,500	27,700	29,900	32,700
2	75	60	25,900	28,000	30,100	32,900
2	80	35	27,900	31,100	33,900	38,500
2	80	40	27,600	30,300	33,000	36,500
2	80	45	27,100	30,000	32,300	35,900
2	80	50	26,900	29,400	31,700	34,600
2	80	55	27,400	29,700	32,000	35,000
2	80	60	27,800	30,000	32,300	35,200
4	40	35	27,400	30,600	33,300	37,800
4	40	40	27,100	29,700	32,400	35,900
4	40	45	26,500	29,400	31,700	35,300
4	40	50	26,200	28,800	31,100	34,000
4	40	55	26,800	29,200	31,400	34,300
4	40	60	27,300	29,500	31,700	34,600
4	45	35	31,100	34,500	37,600	42,700
4	45	40	30,700	33,600	36,600	40,500
4	45	45	30,100	33,300	35,800	39,900
4	45	50	29,800	32,600	35,100	38,400
4	45	55	30,500	33,000	35,500	38,800
4	45	60	30,900	33,400	35,800	39,100
4	50	35	34,700	38,500	41,900	47,600
4	50	40	34,400	37,500	40,800	45,100
4	50	45	33,700	37,100	39,900	44,400
4	50	50	33,500	36,400	39,200	42,800
4	50	55	34,100	36,900	39,600	43,200
4	50	60	34,600	37,200	39,900	43,600
4	55	35	38,400	42,600	46,300	52,500
4	55	40	38,100	41,400	45,100	49,800
4	55	45	37,400	41,000	44,100	49,000
4	55	50	37,100	40,200	43,200	47,200
4	55	55	37,800	40,700	43,700	47,700
4	55	60	38,300	41,100	44,100	48,100
4	60	35	42,100	46,600	50,700	57,400
4	60	40	41,800	45,400	49,300	54,400
4	60	45	41,100	44,900	48,200	53,600
4	60	50	40,800	44,100	47,300	51,700
4	60	55	41,500	44,600	47,800	52,200
4	60	60	42,000	45,000	48,300	52,600
4	65	35	45,900	50,700	55,100	62,300
4	65	40	45,500	49,300	53,600	59,200
4	65	45	44,800	48,900	52,400	58,300
4	65	50	44,500	48,000	51,500	56,200
4	65	55	45,200	48,500	52,000	56,700
4	65	60	45,700	49,000	52,400	57,100
4	70	35	49,600	54,700	59,500	67,300
4	70	40	49,200	53,300	57,900	63,900
4	70	45	48,500	52,800	56,600	62,900
4	70	50	48,200	51,900	55,600	60,700
4	70	55	48,900	52,400	56,200	61,200
4	70	60	49,500	52,900	56,700	61,700
4	75	35	53,400	58,800	63,900	72,300
4	75	40	53,000	57,300	62,200	68,600
4	75	45	52,200	56,800	60,900	67,600
4	75	50	51,900	55,800	59,800	65,200
4	75	55	52,700	56,400	60,400	65,800
4	75	60	53,200	56,900	60,900	66,300
4	80	35	57,200	63,000	68,400	77,300
4	80	40	56,800	61,300	66,600	73,400
4	80	45	56,000	60,800	65,100	72,300
4	80	50	55,700	59,700	64,000	69,700
4	80	55	56,400	60,400	64,600	70,400
4	80	60	57,000	60,900	65,200	70,900
6	40	35	41,700	46,100	50,200	56,900
6	40	40	41,300	44,900	48,800	53,900
6	40	45	40,600	44,400	47,700	53,100
6	40	50	40,300	43,600	46,800	51,200
6	40	55	41,000	44,100	47,300	51,700
6	40	60	41,500	44,600	47,800	52,100
6	45	35	47,100	52,000	56,600	64,100
6	45	40	46,700	50,700	55,100	60,800
6	45	45	46,000	50,200	53,900	59,900
6	45	50	45,700	49,300	52,900	57,700
6	45	55	46,400	49,800	53,400	58,300
6	45	60	47,000	50,300	53,900	58,800
6	50	35	52,600	58,000	63,100	71,500
6	50	40	52,200	56,500	61,400	67,800
6	50	45	51,400	56,000	60,100	66,800
6	50	50	51,100	55,000	59,000	64,400
6	50	55	51,800	55,600	59,600	65,000
6	50	60	52,400	56,100	60,100	65,500
6	55	35	58,100	64,100	69,600	78,800
6	55	40	57,700	62,400	67,800	74,800
6	55	45	56,800	61,800	66,300	73,700
6	55	50	56,500	60,700	65,100	71,000
6	55	55	57,300	61,400	65,700	71,700
6	55	60	57,900	62,000	66,300	72,200
6	60	35	63,700	70,100	76,200	86,200
6	60	40	63,200	68,300	74,100	81,800
6	60	45	62,300	67,700	72,500	80,600
6	60	50	62,000	66,500	71,200	77,700
6	60	55	62,800	67,200	71,900	78,400
6	60	60	63,500	67,800	72,600	79,000
6	65	35	69,300	76,200	82,700	93,600
6	65	40	68,800	74,200	80,600	88,900
6	65	45	67,800	73,600	78,800	87,500
6	65	50	67,400	72,200	77,400	84,400
6	65	55	68,300	73,100	78,200	85,200
6	65	60	69,000	73,700	78,900	85,900
6	70	35	74,900	82,300	89,400	101,100
6	70	40	74,300	80,200	87,000	95,900
6	70	45	73,300	79,500	85,100	94,500
6	70	50	72,900	78,100	83,600	91,100
6	70	55	73,900	78,900	84,500	92,000
6	70	60	74,700	79,700	85,200	92,700
6	75	35	80,500	88,500	96,000	108,600
6	75	40	80,000	86,200	93,500	103,100
6	75	45	78,900	85,500	91,500	101,500
6	75	50	78,500	83,900	89,900	97,900
6	75	55	79,500	84,900	90,800	98,800
6	75	60	80,300	85,700	91,600	99,600
6	80	35	86,200	94,700	102,700	116,100
6	80	40	85,600	92,300	100,000	110,200
6	80	45	84,500	91,400	97,900	108,600
6	80	50	84,100	89,800	96,100	104,700
6	80	55	85,100	90,800	97,100	105,700
6	80	60	86,000	91,700	97,900	106,500
8	40	35	55,800	61,600	67,000	75,900
8	40	40	55,400	60,000	65,200	72,000
8	40	45	54,500	59,400	63,700	70,900
8	40	50	54,200	58,300	62,600	68,300
8	40	55	55,000	59,000	63,200	69,000
8	40	60	55,700	59,600	63,800	69,500
8	45	35	63,100	69,500	75,600	85,600
8	45	40	62,600	67,700	73,500	81,200
8	45	45	61,700	67,100	71,900	80,000
8	45	50	61,300	65,900	70,600	77,100
8	45	55	62,200	66,600	71,300	77,800
8	45	60	62,900	67,200	72,000	78,400
8	50	35	70,400	77,500	84,200	95,300
8	50	40	69,900	75,500	82,000	90,500
8	50	45	68,900	74,800	80,200	89,100
8	50	50	68,500	73,500	78,700	85,900
8	50	55	69,400	74,300	79,500	86,700
8	50	60	70,200	75,000	80,200	87,400
8	55	35	77,700	85,500	92,900	105,100
8	55	40	77,200	83,300	90,400	99,800
8	55	45	76,100	82,600	88,500	98,300
8	55	50	75,700	81,100	86,900	94,700
8	55	55	76,700	82,000	87,800	95,600
8	55	60	77,500	82,700	88,500	96,400
8	60	35	85,100	93,600	101,600	115,000
8	60	40	84,500	91,200	99,000	109,100
8	60	45	83,300	90,400	96,800	107,500
8	60	50	82,900	88,800	95,100	103,600
8	60	55	84,000	89,700	96,000	104,600
8	60	60	84,900	90,600	96,900	105,400
8	65	35	92,600	101,700	110,400	124,900
8	65	40	91,900	99,100	107,500	118,500
8	65	45	90,700	98,200	105,200	116,800
8	65	50	90,200	96,500	103,300	112,600
8	65	55	91,400	97,500	104,400	113,600
8	65	60	92,300	98,400	105,200	114,500
8	70	35	100,100	109,900	119,200	134,800
8	70	40	99,300	107,100	116,100	128,000
8	70	45	98,000	106,100	113,600	126,100
8	70	50	97,600	104,200	111,600	121,600
8	70	55	98,800	105,400	112,700	122,700
8	70	60	99,800	106,400	113,700	123,700
8	75	35	107,600	118,100	128,100	144,800
8	75	40	106,800	115,100	124,800	137,500
8	75	45	105,400	114,100	122,100	135,500
8	75	50	104,900	112,100	119,900	130,600
8	75	55	106,200	113,300	121,100	131,900
8	75	60	107,300	114,300	122,200	132,900
8	80	35	115,200	126,300	137,000	–
8	80	40	114,400	123,100	133,500	297,000
8	80	45	112,900	122,100	130,600	144,900
8	80	50	112,300	119,900	128,300	139,700
8	80	55	113,700	121,200	129,600	141,000
8	80	60	114,800	122,300	130,700	142,100

Table 16. Stop sign-controlled highways generalized service volume table.
Land Use	Functional System	Level of Service—B Service Volume	Level of Service—C Service Volume	Level of Service—D Service Volume	Level of Service—E Service Volume
Rural	Princ. Arterial	7,600	11,100	12,400	13,600
Rural	Minor Arterial	6,800	10,200	11,500	12,600
Rural	Collector	5,900	9,300	10,600	11,700
Urban	Princ. Arterial	5,200	8,500	9,800	10,900
Urban	Minor Arterial	1,900	5,200	6,400	7,400
Urban	Collector		2,800	4,000	4,800

Table 17. Rural two-lane highways generalized service volume table.
Speed Limit	Terrain	Truck Pct.	Level of Service—B Service Volume	Level of Service—C Service Volume	Level of Service—D Service Volume
45	Flat	0	3,600	8,700	13,900
45	Flat	2	3,500	8,700	13,900
45	Flat	4	3,500	8,700	13,900
45	Flat	6	3,500	8,700	13,900
45	Flat	8	3,400	8,600	13,900
45	Flat	10	3,400	8,600	13,900
45	Rolling	0	3,600	8,700	13,900
45	Rolling	2	3,500	8,600	13,900
45	Rolling	4	3,400	8,500	13,900
45	Rolling	6	3,300	8,400	13,900
45	Rolling	8	3,300	8,200	13,900
45	Rolling	10	3,200	8,100	13,900
45	Mountainous	0	3,600	8,700	13,900
45	Mountainous	2	3,200	7,700	12,300
45	Mountainous	4	2,800	7,000	11,100
45	Mountainous	6	2,600	6,300	10,100
45	Mountainous	8	2,400	5,800	9,300
45	Mountainous	10	2,200	5,400	8,500
50	Flat	0	8,700	13,900	19,000
50	Flat	2	8,700	13,900	19,000
50	Flat	4	8,700	13,900	19,000
50	Flat	6	8,700	13,900	19,000
50	Flat	8	8,600	13,900	19,000
50	Flat	10	8,600	13,900	19,000
50	Rolling	0	8,700	13,900	19,000
50	Rolling	2	8,600	13,900	19,000
50	Rolling	4	8,500	13,900	19,000
50	Rolling	6	8,400	13,900	19,000
50	Rolling	8	8,200	13,900	19,000
50	Rolling	10	8,100	13,900	19,000
50	Mountainous	0	8,700	13,900	19,000
50	Mountainous	2	7,700	12,300	16,900
50	Mountainous	4	7,000	11,100	15,200
50	Mountainous	6	6,300	10,100	13,900
50	Mountainous	8	5,800	9,300	12,700
50	Mountainous	10	5,400	8,500	11,700
55	Flat	0	13,900	19,000	24,200
55	Flat	2	13,900	19,000	24,200
55	Flat	4	13,900	19,000	24,200
55	Flat	6	13,900	19,000	24,200
55	Flat	8	13,900	19,000	24,200
55	Flat	10	13,900	19,000	24,200
55	Rolling	0	13,900	19,000	24,200
55	Rolling	2	13,900	19,000	24,200
55	Rolling	4	13,900	19,000	24,200
55	Rolling	6	13,900	19,000	24,200
55	Rolling	8	13,900	19,000	24,200
55	Rolling	10	13,900	19,000	24,200
55	Mountainous	0	13,900	19,000	24,200
55	Mountainous	2	12,300	16,900	21,500
55	Mountainous	4	11,100	15,200	19,400
55	Mountainous	6	10,100	13,900	17,600
55	Mountainous	8	9,300	12,700	16,100
55	Mountainous	10	8,500	11,700	14,900
60	Flat	0	19,000	24,200	29,300
60	Flat	2	19,000	24,200	29,300
60	Flat	4	19,000	24,200	29,300
60	Flat	6	19,000	24,200	29,300
60	Flat	8	19,000	24,200	29,300
60	Flat	10	19,000	24,200	29,300
60	Rolling	0	19,000	24,200	29,300
60	Rolling	2	19,000	24,200	29,300
60	Rolling	4	19,000	24,200	29,300
60	Rolling	6	19,000	24,200	29,300
60	Rolling	8	19,000	24,200	29,300
60	Rolling	10	19,000	24,200	29,300
60	Mountainous	0	19,000	24,200	29,300
60	Mountainous	2	16,900	21,500	26,100
60	Mountainous	4	15,200	19,400	23,500
60	Mountainous	6	13,900	17,600	21,400
60	Mountainous	8	12,700	16,100	19,600
60	Mountainous	10	11,700	14,900	18,100
65	Flat	0	24,200	29,300	34,500
65	Flat	2	24,200	29,300	34,500
65	Flat	4	24,200	29,300	34,500
65	Flat	6	24,200	29,300	34,500
65	Flat	8	24,200	29,300	34,500
65	Flat	10	24,200	29,300	34,500
65	Rolling	0	24,200	29,300	34,500
65	Rolling	2	24,200	29,300	34,500
65	Rolling	4	24,200	29,300	34,500
65	Rolling	6	24,200	29,300	34,500
65	Rolling	8	24,200	29,300	34,500
65	Rolling	10	24,200	29,300	34,500
65	Mountainous	0	24,200	29,300	34,500
65	Mountainous	2	21,500	26,100	30,700
65	Mountainous	4	19,400	23,500	27,600
65	Mountainous	6	17,600	21,400	25,100
65	Mountainous	8	16,100	19,600	23,000
65	Mountainous	10	14,900	18,100	21,300

Page last modified on March 20, 2018