Appendix E Detailed fuel consumption coefficients (uninterrupted flow)

Table 56: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.419556	0.441226	12.43718	6.68E-05	0.006151	0.149391
02. Medium Car	7.771756	0.429248	14.42872	5.78E-05	0.005364	0.122652
03. Large Car	9.826507	0.473008	15.01703	4.7E-05	0.004258	0.08713
04. Courier Van-Utility	7.609467	0.284026	19.36752	6.91E-05	0.006175	0.110658
05. 4WD Mid Size Petrol	10.24522	0.464267	14.11609	5.05E-05	0.005148	0.063315
06. Light Rigid	8.085994	0.239071	13.9732	0.000116	0.012785	0.099828
07. Medium Rigid	12.45859	0.36312	9.564724	9.97E-05	0.014856	0.048677
08. Heavy Rigid	23.22869	0.243735	14.52463	9.95E-05	0.012912	0.019901
09. Heavy Bus	23.33246	0.271022	14.12877	6.85E-05	0.011434	0.01995
10. Artic 4 Axle	27.24712	0.160111	12.59432	0.000116	0.019467	0.021969
11. Artic 5 Axle	30.44964	0.265547	11.51051	0.000103	0.017613	0.014919
12. Artic 6 Axle	33.79927	0.303256	10.38151	9.34E-05	0.017999	0.013406
13. Rigid + 5 Axle Dog	38.14329	0.302384	9.066662	8.58E-05	0.02207	0.011962
14. B-Double	41.48179	0.32033	8.323599	7.96E-05	0.022113	0.010988
15. Twin steer + 5 Axle Dog	40.98332	0.321609	8.44159	8.01E-05	0.022176	0.011101
16. A-Double	47.75104	0.300993	7.10185	7.17E-05	0.024567	0.009609
17. B Triple	50.31407	0.30429	6.703995	6.89E-05	0.024871	0.009132
18. A B Combination	54.29232	0.287536	6.08939	6.64E-05	0.027662	0.008529
19. A-Triple	58.66595	0.27658	5.547481	6.39E-05	0.029925	0.00794
20. Double B-Double	61.23917	0.280027	5.283165	6.2E-05	0.029966	0.007613

Road width = 8.5m

RF = 0

Curvature = 20° / km

Source: ARRB Group Ltd.

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.420102	0.439234	12.28431	6.7E-05	0.005893	0.157521
02. Medium Car	7.775476	0.42409	14.30184	5.84E-05	0.005073	0.130745
03. Large Car	9.832691	0.466236	14.90356	4.78E-05	0.003936	0.094725
04. Courier Van-Utility	7.616445	0.249977	19.61225	7.34E-05	0.005816	0.122244
05. 4WD Mid Size Petrol	10.25566	0.438984	14.39811	5.46E-05	0.00485	0.068036
06. Light Rigid	8.086364	0.225894	14.05784	0.000119	0.012559	0.102707
07. Medium Rigid	12.46055	0.261205	10.88355	0.000116	0.014085	0.053823
08. Heavy Rigid	23.2391	0.161191	15.62442	0.000114	0.012347	0.021583
09. Heavy Bus	23.37863	0.184935	15.22807	8.3E-05	0.010906	0.02188
10. Artic 4 Axle	27.25844	0.078697	13.41707	0.000132	0.018432	0.023635
11. Artic 5 Axle	30.46289	0.215002	12.05477	0.000114	0.016873	0.015683
12. Artic 6 Axle	33.81456	0.254183	10.9273	0.000105	0.017296	0.014056
13. Rigid + 5 Axle Dog	38.16272	0.23046	9.992665	0.000102	0.021312	0.012538
14. B-Double	41.50446	0.248591	9.264501	9.55E-05	0.021412	0.011506
15. Twin steer + 5 Axle Dog	41.00494	0.245251	9.44317	9.69E-05	0.02144	0.011646
16. A-Double	47.78389	0.213792	8.297749	9.06E-05	0.023832	0.010063
17. B Triple	50.35022	0.217325	7.908359	8.77E-05	0.024161	0.009554
18. A B Combination	54.33392	0.196344	7.363974	8.68E-05	0.026772	0.008899
19. A-Triple	58.71299	0.188315	6.781563	8.47E-05	0.028839	0.008253
20. Double B-Double	61.28954	0.192702	6.513579	8.25E-05	0.028915	0.007907

Road width = 8.5m

RF = 0

Curvature = 120° / km

Source: ARRB Group Ltd.

Table 57: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.430818	0.413296	12.05829	7.13E-05	0.005493	0.186733
02. Medium Car	7.817367	0.389915	14.03742	6.35E-05	0.004599	0.159215
03. Large Car	9.898382	0.428103	14.63301	5.33E-05	0.003436	0.120841
04. Courier Van-Utility	7.692486	0.125209	20.04833	9.27E-05	0.004954	0.16706
05. 4WD Mid Size Petrol	10.36996	0.357685	14.85765	7.11E-05	0.004083	0.084988
06. Light Rigid	8.114709	0.126441	14.91988	0.000142	0.011942	0.11842
07. Medium Rigid	12.5064	-0.14671	15.26244	0.000198	0.012141	0.076241
08. Heavy Rigid	23.48931	-0.1457	18.70081	0.000183	0.010893	0.028691
09. Heavy Bus	23.75106	-0.10871	17.93336	0.000147	0.009469	0.029562
10. Artic 4 Axle	27.54483	-0.31256	16.98501	0.000227	0.017068	0.030663
11. Artic 5 Axle	30.79391	-0.00859	14.17715	0.000178	0.015795	0.018493
12. Artic 6 Axle	34.19471	0.041147	12.98095	0.000165	0.016237	0.016427
13. Rigid + 5 Axle Dog	38.64359	-0.04963	12.91794	0.00018	0.020026	0.014665
14. B-Double	42.06335	-0.02236	12.10437	0.000172	0.020135	0.013392
15. Twin steer + 5 Axle Dog	41.53801	-0.04102	12.45213	0.000177	0.020122	0.013629
16. A-Double	48.29061	-0.10604	11.80937	0.00018	0.022492	0.0118
17. B Triple	50.82917	-0.09977	11.42352	0.000176	0.022859	0.011189
18. A B Combination	54.74679	-0.16904	11.51535	0.000188	0.025386	0.010482
19. A-Triple	59.06178	-0.21146	11.36175	0.000196	0.027322	0.009765
20. Double B-Double	61.60803	-0.20134	11.04583	0.000192	0.027435	0.009347

Road width = 8.5m

RF = 0

Curvature = 300° / km

Source: ARRB Group Ltd.

Table 58: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.491702	0.421436	12.37906	6.51E-05	0.005492	0.186578
02. Medium Car	7.868947	0.410501	14.29675	5.58E-05	0.004706	0.155039
03. Large Car	9.963608	0.45366	14.87534	4.5E-05	0.003707	0.112982
04. Courier Van-Utility	7.832269	0.213757	19.69587	5.62E-05	0.003273	0.209737
05. 4WD Mid Size Petrol	10.41163	0.449003	13.97532	4.69E-05	0.004451	0.081451
06. Light Rigid	8.194043	0.12436	17.12533	0.000105	0.008075	0.169038
07. Medium Rigid	12.99676	0.21809	10.39679	6.96E-05	0.011354	0.115936
08. Heavy Rigid	28.30358	0.154471	11.0119	3.42E-05	0.00796	0.057013
09. Heavy Bus	32.60248	0.228565	7.548896	7.54E-06	0.005175	0.050176
10. Artic 4 Axle	33.39936	-0.027	11.85291	6.2E-05	0.011762	0.051206
11. Artic 5 Axle	37.52704	0.045769	9.932212	5.12E-05	0.01116	0.043394
12. Artic 6 Axle	41.89155	0.08751	8.372325	4.27E-05	0.010967	0.038763
13. Rigid + 5 Axle Dog	49.68329	0.089869	6.958297	3.38E-05	0.011206	0.03299
14. B-Double	55.50393	0.123463	5.655572	2.53E-05	0.010672	0.029441
15. Twin steer + 5 Axle Dog	53.77065	0.107184	6.134378	2.99E-05	0.011087	0.030439
16. A-Double	70.87782	0.090232	4.637931	1.99E-05	0.010249	0.023259
17. B Triple	76.101	0.086012	4.363395	1.9E-05	0.010076	0.021702
18. A B Combination	84.65477	0.012202	4.870402	2.85E-05	0.010692	0.019903
19. A-Triple	93.68756	-0.04522	5.128339	3.82E-05	0.011146	0.018281
20. Double B-Double	99.14634	-0.04822	4.938515	3.86E-05	0.010979	0.017311

Road width = 8.5m

RF = 40 m/km

Curvature = 20° / km

Source: ARRB Group Ltd.

Table 59: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.493322	0.420576	12.22087	6.51E-05	0.005274	0.193604
02. Medium Car	7.872492	0.407349	14.15426	5.61E-05	0.004455	0.162052
03. Large Car	9.969471	0.448725	14.74419	4.55E-05	0.003412	0.119872
04. Courier Van-Utility	7.838735	0.213127	19.44389	5.63E-05	0.002959	0.215253
05. 4WD Mid Size Petrol	10.42136	0.437022	14.03395	4.93E-05	0.004167	0.084735
06. Light Rigid	8.195025	0.16858	16.15015	9.71E-05	0.008117	0.168629
07. Medium Rigid	12.99869	0.246486	9.633341	6.75E-05	0.010245	0.116933
08. Heavy Rigid	28.33669	0.163915	10.80028	3.37E-05	0.007627	0.056952
09. Heavy Bus	32.65292	0.219811	7.703291	1.01E-05	0.005089	0.050121
10. Artic 4 Axle	33.40959	0.05646	10.2964	4.65E-05	0.010702	0.050966
11. Artic 5 Axle	37.53559	0.11535	8.606099	4.06E-05	0.00982	0.043285
12. Artic 6 Axle	41.90111	0.1461	7.240625	3.43E-05	0.009678	0.038709
13. Rigid + 5 Axle Dog	49.69475	0.102705	6.665637	3.35E-05	0.010667	0.033009
14. B-Double	55.51692	0.115608	5.726222	2.91E-05	0.010274	0.029512
15. Twin steer + 5 Axle Dog	53.78323	0.110606	6.010958	3.16E-05	0.010577	0.030479
16. A-Double	71.56002	0.067406	4.892933	2.66E-05	0.009926	0.02313
17. B Triple	76.78857	0.064714	4.597889	2.54E-05	0.009782	0.021592
18. A B Combination	85.29855	-0.00897	5.104891	3.6E-05	0.01042	0.019823
19. A-Triple	94.30344	-0.06631	5.364557	4.66E-05	0.010892	0.018218
20. Double B-Double	99.74974	-0.06869	5.167497	4.68E-05	0.010745	0.017259

Road width = 8.5m

RF = 40 m/km

Curvature = 120° / km

Source: ARRB Group Ltd.

Table 60: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.50887	0.395606	11.99303	6.9E-05	0.004896	0.22141
02. Medium Car	7.911688	0.376754	13.86783	6.04E-05	0.004018	0.189019
03. Large Car	10.03082	0.417092	14.4	4.99E-05	0.002941	0.14439
04. Courier Van-Utility	7.908757	0.153452	19.18577	6.59E-05	0.002259	0.243295
05. 4WD Mid Size Petrol	10.52677	0.369651	14.3127	6.31E-05	0.00353	0.099866
06. Light Rigid	8.221647	0.188198	15.12783	9.68E-05	0.007588	0.174732
07. Medium Rigid	13.06227	0.232187	8.89884	8.02E-05	0.00832	0.121418
08. Heavy Rigid	28.70234	0.185064	10.01106	3.69E-05	0.006607	0.056523
09. Heavy Bus	33.20975	0.175593	8.061245	2.46E-05	0.004641	0.050075
10. Artic 4 Axle	33.57317	0.090655	9.511494	4.72E-05	0.009588	0.050723
11. Artic 5 Axle	37.72303	0.158172	7.640554	4.03E-05	0.008516	0.043088
12. Artic 6 Axle	42.11388	0.1725	6.561832	3.74E-05	0.008475	0.038596
13. Rigid + 5 Axle Dog	49.9594	0.081453	6.917595	4.69E-05	0.009926	0.032908
14. B-Double	55.82178	0.091411	6.044326	4.29E-05	0.009603	0.029416
15. Twin steer + 5 Axle Dog	54.07515	0.094774	6.179251	4.38E-05	0.00982	0.030361
16. A-Double	71.97696	0.02199	5.549003	4.49E-05	0.009529	0.0231
17. B Triple	77.60805	0.020778	5.199092	4.29E-05	0.00938	0.021462
18. A B Combination	86.70535	-0.05037	5.607509	5.36E-05	0.009974	0.01959
19. A-Triple	95.55213	-0.10394	5.814082	6.43E-05	0.010483	0.018051
20. Double B-Double	100.9416	-0.10482	5.599205	6.41E-05	0.010368	0.017122

Road width = 8.5m

RF = 40 m/km

Curvature = 300° / km

Source: ARRB Group Ltd.

Table 61: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.660659	0.383441	12.05435	6.02E-05	0.004748	0.259216
02. Medium Car	8.088164	0.362947	14.05313	5.09E-05	0.003776	0.223792
03. Large Car	10.21493	0.433193	14.14124	4.13E-05	0.003358	0.151311
04. Courier Van-Utility	8.628304	0.254692	14.78987	2.37E-05	0.003761	0.328462
05. 4WD Mid Size Petrol	10.67786	0.354199	14.35104	3.76E-05	0.002676	0.152982
06. Light Rigid	8.868398	0.100342	14.27262	6.79E-05	0.008529	0.266148
07. Medium Rigid	14.41519	0.085917	9.278373	5.93E-05	0.010135	0.167807
08. Heavy Rigid	34.54665	0.154153	8.303831	1.67E-05	0.006399	0.06815
09. Heavy Bus	40.43583	0.222189	5.431081	-4.1E-06	0.004267	0.058178
10. Artic 4 Axle	39.85896	0.063163	8.47945	2.72E-05	0.009022	0.060658
11. Artic 5 Axle	46.52422	0.092265	7.003547	2.51E-05	0.008172	0.050401
12. Artic 6 Axle	52.45046	0.110276	5.950767	2.17E-05	0.008045	0.04461
13. Rigid + 5 Axle Dog	62.31096	0.024451	6.170531	2.97E-05	0.008903	0.038382
14. B-Double	70.10879	0.031785	5.430211	2.68E-05	0.008552	0.034093
15. Twin steer + 5 Axle Dog	68.10427	0.03025	5.611995	2.78E-05	0.008778	0.035072
16. A-Double	91.3902	-0.04766	5.033767	3.52E-05	0.008133	0.026777
17. B Triple	98.94077	-0.05406	4.770973	3.6E-05	0.007935	0.024833
18. A B Combination	111.5167	-0.12552	4.913514	5.28E-05	0.008334	0.022614
19. A-Triple	124.3793	-0.18484	4.947623	7.04E-05	0.008709	0.020733
20. Double B-Double	132.0606	-0.18468	4.721459	7.1E-05	0.00854	0.019594

Road width = 8.5m

RF = 60 m/km

Curvature = 20° / km

Source: ARRB Group Ltd.

Table 62: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.66118	0.38597	11.83227	5.97E-05	0.00459	0.26565
02. Medium Car	8.09162	0.36214	13.8632	5.07E-05	0.003596	0.230401
03. Large Car	10.2207	0.426125	14.04099	4.18E-05	0.003159	0.158539
04. Courier Van-Utility	8.638611	0.260974	14.41565	2.2E-05	0.003549	0.333078
05. 4WD Mid Size Petrol	10.68749	0.356644	14.16712	3.79E-05	0.002397	0.154782
06. Light Rigid	8.870616	0.142956	13.25778	6.01E-05	0.007989	0.267849
07. Medium Rigid	14.41721	0.115409	8.640166	5.65E-05	0.009299	0.167948
08. Heavy Rigid	34.75485	0.146114	8.362031	1.87E-05	0.00625	0.067837
09. Heavy Bus	40.65993	0.21837	5.446216	-3.2E-06	0.004214	0.057873
10. Artic 4 Axle	40.35225	0.045768	8.556549	3.34E-05	0.00858	0.060166
11. Artic 5 Axle	46.69599	0.067883	7.304556	3.28E-05	0.007798	0.050442
12. Artic 6 Axle	52.45946	0.086464	6.280863	2.9E-05	0.007727	0.044801
13. Rigid + 5 Axle Dog	62.93881	0.000857	6.419083	3.76E-05	0.008552	0.038134
14. B-Double	70.7471	0.009179	5.676765	3.42E-05	0.008242	0.033907
15. Twin steer + 5 Axle Dog	68.70264	0.005631	5.895285	3.58E-05	0.00845	0.034892
16. A-Double	92.05697	-0.0697	5.279134	4.39E-05	0.007901	0.026669
17. B Triple	99.60275	-0.0752	5.004972	4.46E-05	0.007727	0.024746
18. A B Combination	112.175	-0.14565	5.125811	6.29E-05	0.008141	0.02254
19. A-Triple	125.0379	-0.20479	5.151179	8.22E-05	0.008525	0.02067
20. Double B-Double	132.7192	-0.20394	4.91556	8.27E-05	0.00837	0.01954

Road width = 8.5m

RF = 60 m/km

Curvature = 120° / km

Source: ARRB Group Ltd.

Table 63: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.671103	0.353384	11.72121	6.38E-05	0.004305	0.296659
02. Medium Car	8.130261	0.32417	13.73434	5.55E-05	0.003274	0.257727
03. Large Car	10.28149	0.383253	13.98039	4.77E-05	0.002791	0.182381
04. Courier Van-Utility	8.721555	0.234586	13.88386	2.46E-05	0.00295	0.351359
05. 4WD Mid Size Petrol	10.79231	0.325967	14.0717	4.63E-05	0.001819	0.162062
06. Light Rigid	8.90674	0.186791	11.96899	5.39E-05	0.007028	0.271206
07. Medium Rigid	14.45852	0.142413	7.796252	6.03E-05	0.008031	0.168549
08. Heavy Rigid	35.19441	0.121799	8.614031	2.87E-05	0.005787	0.067161
09. Heavy Bus	41.78446	0.203008	5.479375	3.23E-06	0.004008	0.056234
10. Artic 4 Axle	41.2539	0.011604	8.785071	4.81E-05	0.007892	0.059194
11. Artic 5 Axle	46.88105	0.034322	7.738604	4.78E-05	0.007212	0.050475
12. Artic 6 Axle	52.66982	0.055954	6.683765	4.29E-05	0.007168	0.044802
13. Rigid + 5 Axle Dog	63.47482	-0.04254	6.977474	5.58E-05	0.00808	0.037988
14. B-Double	71.50701	-0.03299	6.213738	5.15E-05	0.007801	0.033703
15. Twin steer + 5 Axle Dog	68.98461	-0.03963	6.525944	5.44E-05	0.008028	0.03491
16. A-Double	93.09581	-0.10354	5.671144	5.99E-05	0.007552	0.026476
17. B Triple	100.5787	-0.10689	5.368857	6.01E-05	0.007414	0.024601
18. A B Combination	113.0233	-0.1732	5.423315	7.92E-05	0.007862	0.022439
19. A-Triple	125.8265	-0.23133	5.429643	0.0001	0.008266	0.020593
20. Double B-Double	133.4894	-0.22954	5.180474	0.0001	0.008132	0.019477

Road width = 8.5m

RF = 60 m/km

Curvature = 300° / km

Source: ARRB Group Ltd.

Table 64: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.843005	0.29989	11.63124	4.83E-05	0.003534	0.445097
02. Medium Car	8.396108	0.283436	13.04597	3.72E-05	0.002766	0.386246
03. Large Car	10.49274	0.319691	14.08242	3.31E-05	0.002064	0.284781
04. Courier Van-Utility	9.721387	0.285821	11.20472	6.62E-06	0.003463	0.393865
05. 4WD Mid Size Petrol	11.32372	0.317651	12.00848	1.92E-05	0.002788	0.237287
06. Light Rigid	10.01749	0.140161	10.84775	3.94E-05	0.006965	0.320465
07. Medium Rigid	16.6881	0.124102	6.617649	3.7E-05	0.007796	0.191137
08. Heavy Rigid	40.17012	0.105414	7.650529	1.55E-05	0.00545	0.07714
09. Heavy Bus	48.93764	0.187502	4.435923	-1E-05	0.003527	0.06338
10. Artic 4 Axle	47.03696	-0.00698	8.044601	3.33E-05	0.007539	0.067528
11. Artic 5 Axle	54.51961	0.016157	6.88415	2.98E-05	0.006959	0.056987
12. Artic 6 Axle	61.83468	0.028879	5.993544	2.67E-05	0.006874	0.050191
13. Rigid + 5 Axle Dog	74.67714	-0.07871	6.254406	4.26E-05	0.007567	0.042834
14. B-Double	84.67729	-0.0718	5.581742	4.01E-05	0.007201	0.037799
15. Twin steer + 5 Axle Dog	81.75482	-0.07521	5.818556	4.06E-05	0.007474	0.039091
16. A-Double	113.0883	-0.1502	4.93549	5.74E-05	0.006704	0.02922
17. B Triple	122.907	-0.15491	4.642439	5.92E-05	0.006523	0.027043
18. A B Combination	139.354	-0.24207	4.733977	9.1E-05	0.006924	0.024691
19. A-Triple	155.9806	-0.3161	4.768328	0.000125	0.007322	0.0227
20. Double B-Double	166.0829	-0.31384	4.532479	0.000127	0.00718	0.021415

Road width = 8.5m

RF = 80 m/km

Curvature = 20° / km

Source: ARRB Group Ltd.

Table 65: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.843503	0.311187	11.22108	4.63E-05	0.003355	0.45123
02. Medium Car	8.399035	0.293159	12.65611	3.54E-05	0.002597	0.39161
03. Large Car	10.49838	0.323944	13.82907	3.24E-05	0.001838	0.289059
04. Courier Van-Utility	9.735065	0.28858	11.04339	5.94E-06	0.003357	0.395156
05. 4WD Mid Size Petrol	11.33932	0.320586	11.74431	1.83E-05	0.002574	0.240142
06. Light Rigid	10.02026	0.184425	9.926024	3.1E-05	0.006572	0.320354
07. Medium Rigid	16.68998	0.147204	6.155281	3.41E-05	0.007409	0.190969
08. Heavy Rigid	40.3425	0.100147	7.673981	1.71E-05	0.005338	0.076906
09. Heavy Bus	49.12072	0.1868	4.406284	-9.9E-06	0.003486	0.063176
10. Artic 4 Axle	47.46922	-0.01739	8.052259	3.82E-05	0.007233	0.067105
11. Artic 5 Axle	55.0735	-0.0028	7.041924	3.66E-05	0.006627	0.056602
12. Artic 6 Axle	62.41772	0.008696	6.188781	3.35E-05	0.006567	0.049896
13. Rigid + 5 Axle Dog	75.34548	-0.10247	6.508512	5.23E-05	0.007281	0.042577
14. B-Double	85.34317	-0.09473	5.8343	4.95E-05	0.006951	0.037616
15. Twin steer + 5 Axle Dog	82.42721	-0.09982	6.098776	5.02E-05	0.0072	0.038887
16. A-Double	113.7469	-0.17015	5.141846	6.81E-05	0.006525	0.029122
17. B Triple	123.5657	-0.17389	4.835259	6.99E-05	0.006364	0.026964
18. A B Combination	140.0128	-0.2608	4.909581	0.000104	0.006772	0.024625
19. A-Triple	156.6395	-0.33523	4.936094	0.000141	0.007174	0.022648
20. Double B-Double	166.7418	-0.33246	4.692249	0.000144	0.007043	0.021373

Road width = 8.5m

RF = 80 m/km

Curvature = 120° / km

Source: ARRB Group Ltd.

Table 66: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	6.850633	0.302709	10.62808	4.54E-05	0.003047	0.481118
02. Medium Car	8.427881	0.274598	12.09516	3.51E-05	0.002293	0.420888
03. Large Car	10.55836	0.312025	13.28676	3.3E-05	0.001502	0.306944
04. Courier Van-Utility	9.895639	0.266583	10.91513	9.99E-06	0.003018	0.396213
05. 4WD Mid Size Petrol	11.46182	0.295474	11.4256	2.2E-05	0.002062	0.249415
06. Light Rigid	10.05607	0.232052	8.829506	2.28E-05	0.006105	0.319835
07. Medium Rigid	16.73087	0.166147	5.68081	3.56E-05	0.006833	0.190571
08. Heavy Rigid	41.13544	0.076169	7.827707	2.57E-05	0.004968	0.075699
09. Heavy Bus	49.88076	0.181793	4.366817	-7.2E-06	0.003367	0.062194
10. Artic 4 Axle	48.28824	-0.0413	8.163107	5.08E-05	0.006745	0.066272
11. Artic 5 Axle	56.02333	-0.03787	7.3792	5.19E-05	0.006114	0.055904
12. Artic 6 Axle	63.40329	-0.02787	6.584284	4.87E-05	0.006092	0.049354
13. Rigid + 5 Axle Dog	76.32008	-0.13647	6.878878	6.93E-05	0.006862	0.042179
14. B-Double	86.30705	-0.12782	6.20732	6.58E-05	0.006582	0.037328
15. Twin steer + 5 Axle Dog	83.45961	-0.13599	6.519241	6.76E-05	0.006793	0.038541
16. A-Double	114.5364	-0.19693	5.424729	8.47E-05	0.006269	0.029005
17. B Triple	124.3283	-0.19932	5.09837	8.63E-05	0.006136	0.026876
18. A B Combination	140.7353	-0.28565	5.149728	0.000124	0.006564	0.024557
19. A-Triple	157.3492	-0.36082	5.169334	0.000165	0.006974	0.022594
20. Double B-Double	167.452	-0.3575	4.914559	0.000168	0.006857	0.021329

Road width = 8.5m

RF = 80 m/km

Curvature = 300° / km

Source: ARRB Group Ltd.

Table 67: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	7.400402	0.27435	9.057882	3.11E-05	0.003508	0.59533
02. Medium Car	9.244845	0.276724	9.985246	2.09E-05	0.002794	0.487639
03. Large Car	11.34047	0.292851	11.41155	1.9E-05	0.00204	0.38506
04. Courier Van-Utility	10.62315	0.30124	9.424766	-2.1E-06	0.003237	0.442821
05. 4WD Mid Size Petrol	12.48065	0.316942	9.63952	7.31E-06	0.002581	0.27934
06. Light Rigid	11.07491	0.195597	8.391925	1.67E-05	0.006231	0.356572
07. Medium Rigid	18.98699	0.134422	5.340234	2.51E-05	0.006723	0.206634
08. Heavy Rigid	46.38865	0.054034	7.277578	1.84E-05	0.004642	0.08303
09. Heavy Bus	57.90962	0.140971	4.139998	-1E-05	0.003004	0.066641
10. Artic 4 Axle	54.40387	-0.08188	7.741008	4.51E-05	0.00659	0.073154
11. Artic 5 Axle	62.98867	-0.05919	6.782378	3.88E-05	0.006073	0.062015
12. Artic 6 Axle	71.67603	-0.04859	6.01876	3.57E-05	0.005983	0.054472
13. Rigid + 5 Axle Dog	87.78566	-0.17518	6.231594	6.36E-05	0.006571	0.046213
14. B-Double	99.97769	-0.16196	5.54257	6.01E-05	0.00621	0.04062
15. Twin steer + 5 Axle Dog	96.17379	-0.16775	5.824172	5.98E-05	0.006477	0.042124
16. A-Double	135.2839	-0.24581	4.800226	9.03E-05	0.005779	0.031275
17. B Triple	147.3281	-0.24789	4.47458	9.27E-05	0.005616	0.028939
18. A B Combination	168.1839	-0.35595	4.602786	0.000152	0.00607	0.026431
19. A-Triple	189.3478	-0.4478	4.685001	0.000217	0.006449	0.024286
20. Double B-Double	201.9437	-0.44355	4.456079	0.000222	0.006314	0.022891

Road width = 8.5m

RF = 100 m/km

Curvature = 20° / km

Source: ARRB Group Ltd.

Table 68: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	7.401802	0.273919	8.756665	2.97E-05	0.003342	0.60797
02. Medium Car	9.249476	0.270127	9.798424	2.02E-05	0.002659	0.498825
03. Large Car	11.3496	0.285801	11.21226	1.84E-05	0.001901	0.39505
04. Courier Van-Utility	10.70718	0.295149	9.394596	-1.4E-06	0.003163	0.440236
05. 4WD Mid Size Petrol	12.52925	0.317388	9.460006	6.78E-06	0.002444	0.280232
06. Light Rigid	11.08096	0.204522	8.157152	1.52E-05	0.00606	0.356948
07. Medium Rigid	18.9887	0.124664	5.475966	2.8E-05	0.006523	0.206998
08. Heavy Rigid	46.50087	0.051624	7.272455	1.95E-05	0.004563	0.082902
09. Heavy Bus	58.08002	0.140767	4.108501	-1E-05	0.00297	0.066484
10. Artic 4 Axle	55.06011	-0.09882	7.829649	5.37E-05	0.006305	0.072499
11. Artic 5 Axle	63.65135	-0.08057	6.975969	4.77E-05	0.005788	0.061556
12. Artic 6 Axle	72.34027	-0.07061	6.242102	4.44E-05	0.005724	0.054141
13. Rigid + 5 Axle Dog	88.44452	-0.19801	6.468989	7.54E-05	0.006328	0.045976
14. B-Double	100.6361	-0.18374	5.771909	7.13E-05	0.006001	0.040451
15. Twin steer + 5 Axle Dog	96.8333	-0.19113	6.080694	7.13E-05	0.006244	0.041935
16. A-Double	135.9427	-0.26482	4.978743	0.000104	0.00563	0.031189
17. B Triple	147.9869	-0.26574	4.63718	0.000106	0.005485	0.028869
18. A B Combination	168.8427	-0.37489	4.755026	0.00017	0.005936	0.026382
19. A-Triple	190.0067	-0.46752	4.828272	0.00024	0.00631	0.024252
20. Double B-Double	202.6026	-0.4628	4.593326	0.000245	0.006186	0.022864

Road width = 8.5m

RF = 100 m/km

Curvature = 120° / km

Source: ARRB Group Ltd.

Table 69: Coefficients for rural (uninterrupted/free flow speed) fuel consumption model (litres per 100 km)

Vehicle type	Base fuel (l/100km)	K1	K2	K3	K4	K5
01. Small Car	7.41718	0.232865	8.65607	3.2E-05	0.002823	0.648334
02. Medium Car	9.289185	0.227191	9.780091	2.31E-05	0.002282	0.528603
03. Large Car	11.42163	0.240324	11.12027	2.12E-05	0.001563	0.422469
04. Courier Van-Utility	10.95924	0.279912	9.188647	1.28E-06	0.002897	0.433984
05. 4WD Mid Size Petrol	12.66393	0.298769	9.392347	1.06E-05	0.00218	0.282367
06. Light Rigid	11.19492	0.197906	8.062212	1.82E-05	0.005709	0.354644
07. Medium Rigid	19.02887	0.107885	5.694181	3.56E-05	0.006133	0.207032
08. Heavy Rigid	47.0826	0.036959	7.32971	2.59E-05	0.004297	0.082131
09. Heavy Bus	58.67713	0.137035	4.062768	-8.5E-06	0.002869	0.065908
10. Artic 4 Axle	55.83263	-0.12107	7.948376	6.76E-05	0.005915	0.071778
11. Artic 5 Axle	64.52	-0.11032	7.251788	6.29E-05	0.005378	0.060958
12. Artic 6 Axle	73.23695	-0.10205	6.569634	5.96E-05	0.005342	0.053687
13. Rigid + 5 Axle Dog	89.26285	-0.22815	6.790303	9.38E-05	0.005987	0.045672
14. B-Double	101.439	-0.21272	6.084114	8.89E-05	0.005704	0.040241
15. Twin steer + 5 Axle Dog	97.67962	-0.22234	6.430972	8.96E-05	0.005912	0.04168
16. A-Double	136.6621	-0.29009	5.222857	0.000124	0.005423	0.031099
17. B Triple	148.698	-0.28963	4.860205	0.000126	0.005303	0.0288
18. A B Combination	169.5518	-0.40054	4.967801	0.000197	0.005754	0.026332
19. A-Triple	190.7166	-0.49442	5.030725	0.000274	0.006125	0.024217
20. Double B-Double	203.313	-0.48916	4.787312	0.000279	0.006014	0.022838

Road width = 8.5m

RF = 100 m/km

Curvature = 300° / km

Source: ARRB Group Ltd.