Table 2.

Relative difference between SWMM and APM determined $\mathit{RCR}$ s for the four band conditions' design cases in each location of the four nations of the UK.

No. of lanes	Excellent condition				Good condition				Poor condition				Very poor condition
	England	Scotland	Wales	Northern Ireland	England	Scotland	Wales	Northern Ireland	England	Scotland	Wales	Northern Ireland	England	Scotland	Wales	Northern Ireland
2	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.04	0.07	0.19	0.06	1.61	2.24	3.61	2.24
3	0.00	0.00	0.01	0.00	0.02	0.01	0.03	0.01	0.08	0.37	0.57	0.31	3.11	3.78	5.42	4.15
4	0.01	0.01	0.02	0.01	0.02	0.04	0.08	0.03	0.34	0.85	1.37	0.72	4.10	4.94	6.53	5.53
5	0.01	0.02	0.04	0.02	0.08	0.09	0.15	0.07	0.78	1.49	2.26	1.24	4.96	5.78	7.07	6.61
6	0.03	0.05	0.07	0.04	0.11	0.15	0.24	0.14	1.38	2.15	3.15	2.42	5.55	6.48	7.37	7.24

The relative difference is expressed in %.