Driving Risk Affected Areas and Distribution Function of Sharp Horizontal Curves of Expressway

Table 1

Testing results when vehicles are driving along SHCs.

Radius (m)	200	350	400	450	470	500	550	600	665	700	750	800
Speed on deceleration point (km/h)	109	123.5	111.5	113.3	113.3	123.3	117	123	120.5	126.7	124.9	118.7
Predeceleration length (m)	197	251	170	170	167	210	168	186	165	185	169	123