Determination of Curve Speed Zones for Mountainous Freeways

Table 3

Speed difference estimation results.

Speed difference (km/h)
Horizontal curves radius (m)	Passenger car approach speed (km/h)
	80	90	100	105
250	5.07	10.27	15.48	17.02
300	4.16	9.36	14.56	16.11
400	3.02	8.22	13.42	14.97
500	2.33	7.53	12.74	14.28
600	1.88	7.08	12.28	13.83
700	1.55	6.75	11.96	13.50