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Estimating Cumulative Traffic Loads, Volume II:
Traffic Data Assessment and Axle Load Projection for The Sites With Acceptable Axle Weight Data, Final Report for Phase 2

Publication Number: FHWA-RD-03-094
Date: March 2005

Estimating Cumulative Traffic Loads, Volume II:
Traffic Data Assessment and Axle Load Projection for The Sites With Acceptable Axle Weight Data, Final Report for Phase 2

APPENDIX A. SUMMARY OF RESULTS

This appendix provides summary of traffic projection results for all 890 sites with unique traffic ID numbers that are currently in the LTPP program and are included in the IMS database. The summary results are given in table 21. Traffic and other data were not available for several sites; a hyphen in a cell in table 21 indicates the unavailability of the data. The listing contains the following 14 variables:

Agency: Postal abbreviation for the State or Province of the participating agency.
SHRP ID: Site identification number assigned by LTPP program (SHRP stands for Strategic Highway Research Program).
Traffic ID: Unique ID obtained by the combination of STATE_CODE (a 2–digit code assigned to each participating agency) and SHRP ID.
GPS/SPS: Code indicating whether the section is a GPS (G) or SPS (S) section.
Exp. No.: Code indicating to which LTPP experiment (exp.) the pavement section is assigned.
Highway Functional Class: Code indicating functional classification of the highway site.

Table 19. Codes in the IMS database.

Highway Functional Class	Description
1	Rural Principal Arterial–Interstate
2	Rural Principal Arterial–Other
6	Rural Minor Arterial
7	Rural Major Collector
8	Rural Minor Collector
9	Rural Local Collector
11	Urban Principal Arterial–Interstate
12	Urban Principal Arterial–Other Freeways and Expressways
14	Urban Other Principal Arterial
16	Urban Minor Arterial
17	Urban Collector
19	Urban Local

Projection Cat.:

Table 20. Code indicating projection category (2 to 5).

Projection Category	Description
2	Sites with truck class and axle weight distribution data.
3	Sites with truck class distribution data but without site–specific axle weight data.
4	Sites with truck volume data but without site–specific truck class and axle weight distribution data.
5	Sites without traffic data.

Note: Projection Category 1 is reserved for the sites with truck class and axle weight distribution data that can be used for the projection of monthly variation in traffic loads. The adequacy of data to project monthly variation in axle loads was not assessed.

Projection Code: Projection confidence code:
- A–Acceptable.
- Q–Questionable.
- N–Not available.
Projection Status: Code indicating projection status:
- I–Initial.
- R–Reviewed.
Pav. Type: Code indicating pavement type:
- F–Flexible.
- R–Rigid.
Last Pr. Year: Last year for which traffic projections (pr.) are provided in the last three columns of table 21.
Truck Volume: Projected average annual daily truck volume (in the LTPP traffic lane) in the last year (item 11, above) for which the projection is provided (trucks per day rounded to the nearest 10).
Annual Growth Rate: Projected average annual growth rate (for the average daily truck volume) for the last 5 years for which the projection is provided.
ESALs: Projected total annual ESALs (in the LTPP traffic lane) for the last year for which the projection is provided (rounded to the nearest 10).

Table 21. Summary of traffic projection results.

Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Projections			Pav. Type	Last Pr. Year	Traffic Characteristics
Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Cat.	Code	Status	Pav. Type	Last Pr. Year	Traffic Volume	Annual Growth Rate (%)	ESALs
AL	0100	010100	S	1	2	5	N	I	–	–	–	–	–
AL	0600	010600	S	6	–	5	N	I	–	–	–	–	–
AL	1001	011001	G	6B	2	2	A	I	F	1998	680	1.60	268,740
AL	1011	011011	G	2	6	3	N	I	F	1998	190	0.49	–
AL	1019	011019	G	6S	2	2	Q	I	F	1998	440	0.77	194,420
AL	1021	011021	G	2	6	2	Q	I	F	1998	390	4.12	197,910
AL	3028	013028	G	3	11	2	Q	I	R	1998	1,550	8.86	668,160
AL	3998	013998	G	7C	1	2	A	I	R	1994	2,350	3.81	1,088,600
AL	4007	014007	G	4	11	2	Q	I	R	1998	960	4.22	743,190
AL	4073	014073	G	2	2	2	Q	I	F	1998	500	6.52	159,830
AL	4084	014084	G	4	11	2	Q	I	R	1998	3,170	4.00	2,271,870
AL	4125	014125	G	2	14	2	Q	I	F	1998	750	2.00	358,400
AL	4126	014126	G	1	1	2	Q	I	F	1998	3,030	3.00	876,890
AL	4127	014127	G	6B	2	3	N	I	F	1998	310	0.42	–
AL	4129	014129	G	6B	2	2	Q	I	F	1997	460	0.00	137,070
AL	4155	014155	G	6B	2	3	N	I	F	1998	770	6.00	–
AL	5008	015008	G	5	1	2	Q	I	R	1998	3,120	6.14	2,226,460
AL	6012	016012	G	6A	1	2	A	I	F	1998	2,780	3.90	1,482,520
AL	6019	016019	G	6D	1	3	N	I	–	1998	2,320	5.57	–
AK	1001	021001	G	1	2	2	Q	I	F	1998	200	0.68	26,360
AK	1002	021002	G	6B	2	2	Q	I	F	1998	200	0.68	26,960
AK	1004	021004	G	6B	14	2	Q	I	F	1998	360	3.77	86,040
AK	1008	021008	G	6A	6	2	Q	I	F	1998	120	2.00	38,440
AK	6010	026010	G	6A	1	2	Q	I	F	1996	320	1.87	58,140
AK	9035	029035	G	6B	2	2	Q	I	F	1998	100	6.00	33,300
AZ	0100	040100	S	1	2	2	A	R	F	1998	900	9.27	272,650
AZ	0200	040200	S	2	1	2	A	R	R	1998	3,290	6.00	1,706,650
AZ	0500	040500	S	5	1	2	A	R	F	1998	720	3.00	283,870
AZ	0600	040600	S	6	1	2	A	R	R	1998	2,620	5.00	1,917,230
AZ	1001	041001	G	1	1	2	A	R	F	1996	2,620	7.17	913,190
AZ	1002	041002	G	1	1	2	A	R	F	1998	2,200	7.77	841,830
AZ	1003	041003	G	6S	1	3	A	R	F	1998	3,400	7.05	1,231,890
AZ	1006	041006	G	6S	1	2	A	R	F	1998	3,160	6.62	1,216,480
AZ	1007	041007	G	6S	1	2	A	R	F	1998	3,530	–11.25	1,308,390
AZ	1015	041015	G	1	1	3	A	R	F	1998	620	7.42	253,850

Table 21. Summary of traffic projection results.

Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Projections			Pav. Type	Last Pr. Year	Traffic Characteristics
Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Cat.	Code	Status	Pav. Type	Last Pr. Year	Traffic Volume	Annual Growth Rate (%)	ESALs
AZ	1016	041016	G	1	1	2	A	R	F	1998	540	7.37	219,680
AZ	1017	041017	G	1	1	2	Q	R	F	1998	540	4.00	138,280
AZ	1018	041018	G	1	1	3	A	R	F	1998	520	5.23	219,040
AZ	1021	041021	G	1	1	3	A	R	F	1998	2,240	11.25	1,400,330
AZ	1022	041022	G	1	1	3	A	R	F	1998	2,240	11.25	1,348,000
AZ	1024	041024	G	1	1	2	A	R	F	1998	2,080	6.70	1,156,220
AZ	1025	041025	G	1	1	2	A	R	F	1998	2,130	7.35	1,305,460
AZ	1034	041034	G	1	6	2	Q	R	F	1998	460	3.81	73,190
AZ	1036	041036	G	1	2	3	A	R	F	1998	800	12.15	252,190
AZ	1037	041037	G	1	2	3	N	R	F	1998	300	7.49	–
AZ	1062	041062	G	6S	1	2	A	R	F	1998	2,190	8.75	1,494,820
AZ	1065	041065	G	6S	1	2	A	R	F	1998	2,140	9.28	762,300
AZ	6053	046053	G	6A	1	2	A	R	F	1997	2,080	4.00	1,003,140
AZ	6054	046054	G	6A	1	2	Q	R	F	1998	570	1.63	164,270
AZ	6055	046055	G	6A	2	2	Q	R	F	1998	790	1.40	167,870
AZ	6060	046060	G	6A	1	2	A	R	F	1998	590	6.68	223,870
AZ	7079	047079	G	5	12	2	A	R	R	1998	660	13.10	193,680
AZ	7613	047613	G	3	14	2	Q	R	R	1998	2,000	9.86	502,380
AZ	7614	047614	G	3	1	2	A	R	R	1998	1,700	4.58	777,360
AR	0100	050100	S	1	2	2	Q	I	F	1998	820	5.29	217,740
AR	0200	050200	S	2	1	3	N	I	R	1998	3,490	0.00	–
AR	0800	050800	S	8	17	5	N	I	–	–	–	–	–
AR	0900	050900	S	9	–	5	N	I	–	–	–	–	–
AR	2042	052042	G	6S	2	2	A	I	F	1998	180	0.00	45,280
AR	3011	053011	G	3	2	2	A	I	R	1998	690	4.18	303,190
AR	3048	053048	G	2	2	2	Q	I	F	1998	110	5.00	31,440
AR	3058	053058	G	2	12	2	Q	I	F	1998	1,120	22.00	320,510
AR	3059	053059	G	4	11	2	Q	I	R	1998	660	6.00	260,080
AR	3071	053071	G	2	2	2	A	I	F	1998	1,770	8.12	478,440
AR	3073	053073	G	4	11	4	N	I	–	1998	6,570	8.00	–
AR	3074	053074	G	4	1	2	Q	I	R	1998	3,210	0.00	1,921,590
AR	4019	054019	G	4	12	2	A	I	R	1998	1,220	8.00	551,030
AR	4021	054021	G	4	14	2	A	I	R	1998	990	-7.54	390,970
AR	4023	054023	G	4	2	2	A	I	R	1998	1,320	6.00	442,060
AR	4046	054046	G	4	2	2	Q	I	R	1998	790	6.78	357,540

Table 21. Summary of traffic projection results, continued.

Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Projections			Pav. Type	Last Pr. Year	Traffic Characteristics
Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Cat.	Code	Status	Pav. Type	Last Pr. Year	Traffic Volume	Annual Growth Rate (%)	ESALs
AR	5803	055803	G	5	11	2	A	I	R	1998	720	10.85	122,810
AR	5805	055805	G	5	11	2	Q	I	R	1998	1,870	7.21	450,270
AR	A600	05A600	S	6	2	5	N	I	–	–	–	–	–
CA	0500	060500	S	5	1	2	Q	I	F	1998	2,040	6.50	821,640
CA	1253	061253	G	1	2	2	Q	I	F	1998	90	2.56	9,700
CA	2002	062002	G	2	2	4	N	I	–	1998	610	0.80	–
CA	2004	062004	G	2	1	4	N	I	–	1998	4,500	10.00	–
CA	2038	062038	G	2	2	4	N	I	–	1998	400	0.50	–
CA	2040	062040	G	2	2	2	A	I	F	1998	840	–10.78	201,420
CA	2041	062041	G	6B	2	4	N	I	–	1998	840	6.35	–
CA	2051	062051	G	6B	12	3	N	I	F	1998	1,080	4.00	–
CA	2053	062053	G	2	1	2	Q	I	F	1998	520	5.00	71,220
CA	2647	062647	G	2	2	2	Q	I	F	1998	530	2.88	200,330
CA	3005	063005	G	3	1	2	A	I	R	1998	2,920	4.61	1,711,740
CA	3010	063010	G	3	11	4	N	I	–	1998	3,600	7.50	–
CA	3013	063013	G	3	1	4	N	I	–	1998	2,600	7.00	–
CA	3017	063017	G	3	12	4	N	I	–	1998	890	3.07	–
CA	3019	063019	G	3	1	4	N	I	–	1998	4,500	6.73	–
CA	3021	063021	G	3	1	2	A	I	R	1998	700	–16.11	180,780
CA	3024	063024	G	3	1	3	N	I	R	1998	2,290	7.00	–
CA	3030	063030	G	3	1	2	A	I	R	1998	2,850	4.16	1,468,130
CA	3042	063042	G	3	1	2	A	I	R	1998	3,990	3.50	2,034,110
CA	6044	066044	G	6A	2	2	A	I	F	1998	390	2.00	42,580
CA	7452	067452	G	2	6	2	Q	I	F	1998	230	3.42	21,600
CA	7454	067454	G	1	6	2	Q	I	F	1998	110	2.00	22,830
CA	7455	067455	G	5	1	2	A	I	R	1998	2,260	7.58	809,980
CA	7456	067456	G	3	1	4	N	I	–	1998	1,850	7.00	–
CA	7491	067491	G	6S	1	4	N	I	–	1998	1,360	4.58	–
CA	7493	067493	G	3	1	4	N	I	–	1998	2,800	6.43	–
CA	8149	068149	G	6S	1	4	N	I	–	1998	1,770	7.31	–
CA	8150	068150	G	2	6	2	Q	I	F	1998	890	–0.78	188,600
CA	8151	068151	G	2	1	2	A	I	F	1998	2,220	6.68	937,730
CA	8153	068153	G	6B	6	2	Q	I	F	1998	250	1.38	27,240
CA	8156	068156	G	1	6	2	Q	I	F	1998	250	2.30	94,070
CA	8201	068201	G	2	6	2	Q	I	F	1998	230	3.00	36,330

Table 21. Summary of traffic projection results.

Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Projections			Pav. Type	Last Pr. Year	Traffic Characteristics
Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Cat.	Code	Status	Pav. Type	Last Pr. Year	Traffic Volume	Annual Growth Rate (%)	ESALs
CA	8202	068202	G	2	2	2	Q	I	F	1998	570	3.34	93,550
CA	8534	068534	G	6B	1	2	Q	I	F	1998	730	5.24	128,700
CA	8535	068535	G	6B	1	2	A	I	F	1998	960	4.00	196,790
CA	9048	069048	G	9	1	4	N	I	–	1998	1,100	5.80	–
CA	9049	069049	G	9	12	4	N	I	–	1998	3,080	6.13	–
CA	9107	069107	G	9	1	4	N	I	–	1998	1,460	3.48	–
CO	0200	080200	S	2	1	2	Q	I	R	1998	960	0.00	346,050
CO	0500	080500	S	5	1	2	Q	I	F	1998	1,150	5.00	536,060
CO	0800	080800	S	8	9	5	N	I	–	–	–	–	–
CO	1029	081029	G	6B	2	2	Q	I	F	1998	100	1.00	14,480
CO	1047	081047	G	6B	7	2	Q	I	F	1998	150	0.00	38,210
CO	1053	081053	G	1	2	3	N	I	F	1998	450	2.94	–
CO	1057	081057	G	1	14	3	N	I	F	1998	310	3.00	–
CO	2008	082008	G	2	2	3	N	I	F	1994	260	0.00	–
CO	3032	083032	G	3	1	2	A	I	R	1998	820	5.34	381,890
CO	6002	086002	G	6C	1	2	Q	I	F	1998	1,530	3.88	264,700
CO	6013	086013	G	6A	14	3	N	I	F	1998	370	12.00	–
CO	7035	087035	G	7S	1	3	N	I	R	1998	1,640	3.73	–
CO	7036	087036	G	7A	1	4	N	I	–	1997	1,580	5.32	–
CO	7776	087776	G	3	1	3	N	I	R	1998	1,700	4.93	–
CO	7780	087780	G	6B	2	3	N	I	F	1998	340	0.51	–
CO	7781	087781	G	6B	2	3	N	I	F	1998	260	0.00	–
CO	7783	087783	G	6A	1	2	Q	I	F	1998	770	3.00	305,640
CO	9019	089019	G	9	1	2	Q	I	R	1998	2,610	5.76	667,800
CO	9020	089020	G	9	1	2	Q	I	R	1998	2,810	6.15	882,360
CO	A400	08A400	S	4	–	5	N	I	–	–	–	–	–
CT	0900	090900	S	9	–	5	N	R	–	–	–	–	–
CT	1803	091803	G	1	2	3	N	R	F	1998	210	7.00	–
CT	4008	094008	G	4	1	2	Q	R	R	1998	2,700	5.23	1,444,240
CT	4020	094020	G	7B	2	2	A	R	R	1998	800	2.84	119,860
CT	5001	095001	G	7B	1	2	Q	R	R	1998	3,780	4.73	1,734,800
DE	0100	100100	S	1	2	5	N	R	–	–	–	–	–
DE	0200	100200	S	2	2	5	N	R	–	–	–	–	–
DE	1201	101201	G	4	2	4	N	R	–	1998	720	6.50	–
DE	1450	101450	G	6C	2	4	N	R	–	1998	1,200	1.48	–

Table 21. Summary of traffic projection results.

Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Projections			Pav. Type	Last Pr. Year	Traffic Characteristics
Agency	SHRP ID	Traffic ID	GPS/ SPS	Exp. No.	Highway Functional Class	Cat.	Code	Status	Pav. Type	Last Pr. Year	Traffic Volume	Annual Growth Rate (%)	ESALs
DE	4002	104002	G	7B	2	4	N	R	–	1998	480	11.23	–
DE	5004	105004	G	5	1	4	N	R	–	1996	4,730	16.23	–
DE	5005	105005	G	7B	2	4	N	R	–	1998	620	5.06	–
DC	1400	111400	G	6B	11	4	N	I	–	1996	1,110	5.00	–
FL	0100	120100	S	1	2	3	N	I	F	1998	800	5.00	–
FL	0500	120500	S	5	2	5	N	I	–	–	–	–	–
FL	0900	120900	S	9	–	5	N	I	–	–	–	–	–
FL	1030	121030	G	1	2	3	N	I	F	1998	400	10.00	–
FL	1060	121060	G	1	12	3	N	I	F	1998	160	10.00	–
FL	1370	121370	G	1	6	2	Q	I	F	1998	110	3.00	53,380
FL	3804	123804	G	3	1	2	Q	I	R	1998	1,430	8.50	1,156,350
FL	3811	123811	G	3	1	2	Q	I	R	1998	1,620	6.00	784,160
FL	3995	123995	G	1	11	2	Q	I	F	1998	1,960	7.00	713,630
FL	3996	123996	G	1	2	2	Q	I	F	1998	220	2.00	69,400
FL	3997	123997	G	6B	2	3	N	I	F	1998	510	5.17	–
FL	4000	124000	G	3	2	2	Q	I	R	1998	560	2.00	257,460
FL	4057	124057	G	3	1	2	Q	I	R	1998	1,740	5.00	956,430
FL	4059	124059	G	3	2	2	Q	I	R	1998	130	6.00	40,200
FL	4096	124096	G	2	6	2	Q	I	F	1998	100	–13.83	24,980
FL	4097	124097	G	2	1	2	Q	I	F	1998	1,630	6.00	467,340
FL	4099	124099	G	1	14	2	Q	I	F	1998	250	2.00	144,540
FL	4100	124100	G	2	14	2	Q	I	F	1998	140	3.00	30,180
FL	4101	124101	G	6B	12	3	N	I	F	1998	1,150	4.00	–
FL	4102	124102	G	1	12	5	N	I	–	–	–	–	–

Table 21. Summary of traffic projection results, continued

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Topics: research, infrastructure, pavements and materials
Keywords: research, infrastructure, pavements and materials,Pavements, traffic estimates, axle loads, LTPP
TRT Terms: Pavements--Live loads--United States--Testing, Traffic surveys--United States--Data processing, Axle loads, Traffic loads, Estimating
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Estimating Cumulative Traffic Loads, Volume II: Traffic Data Assessment and Axle Load Projection for The Sites With Acceptable Axle Weight Data, Final Report for Phase 2

APPENDIX A. SUMMARY OF RESULTS

Estimating Cumulative Traffic Loads, Volume II:
Traffic Data Assessment and Axle Load Projection for The Sites With Acceptable Axle Weight Data, Final Report for Phase 2