Predicting Operating Speeds at Urban Multilane Roundabouts in Abu Dhabi, United Arab Emirates

Table 1

Traffic and geometric characteristics.

Site	Area	Latitude	Longitude	(m)	(m)	(m)	(m)	(vph)	(vph)	(vph)
1	Mussafah	24°21′33.18′′N	54°30′06.30′′E	35.65	30.55	45.25	85.23	1935	915	1365	0.165	0.148	0.067
2	Mussafah	24°22′05.53′′N	54°30′04.39′′E	36.85	31.05	48.25	87.25	1875	785	1025	0.173	0.152	0.059
3	Khalifa City	24°25′09.18′′N	54°32′48.81′′E	32.15	30.65	41.2	80.85	1125	780	625	0.048	0.036	0.022
4	Khalifa City	24°24′20.58′′N	54°36′19.10′′E	33.2	30.25	40.65	80.15	1025	660	640	0.037	0.028	0.019
5	Mussafah	24°21′35.36′′N	54°30′59.77′′E	32.9	30.85	44.6	89.91	1825	1140	985	0.159	0.155	0.046
6	MBZ City	24°21′41.30′′N	54°33′18.42′′E	30.55	28.75	38.45	83.75	685	305	365	0.032	0.025	0.014
7	MBZ City	24°21′48.97′′N	54°32′43.02′′E	29.65	28.60	34.8	82.25	825	480	720	0.028	0.019	0.010
8	Al Maqta	24°24′26.51′′N	54°29′44.23′′E	23.55	14.55	29.65	51.55	980	510	680	0.045	0.038	0.024
9	Al Maqta	24°24′37.81′′N	54°29′48.30′′E	24.15	15.40	31.25	53.50	1050	735	610	0.051	0.040	0.022
10	Abu Dhabi	24°26′50.42′′N	54°22′10.07′′E	27.45	20.85	35.4	82.85	1260	670	725	0.012	0.008	0.006
11	Abu Dhabi	24°26′26.66′′N	54°21′40.15′′E	30.25	29.95	37.9	81.25	1540	740	810	0.018	0.011	0.008
12	Abu Dhabi	24°27′18.04′′N	54°22′03.07′′E	35.45	31.35	44.3	84.50	1650	665	775	0.021	0.016	0.009
Mean				30.98	26.90	39.31	78.59	1315	699	777	0.066	0.056	0.026
Standard deviation				4.11	5.97	5.55	11.96	414.7	204.3	242.6	0.059	0.056	0.020