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

<div>Changes in heart rate of experienced driver passing different sections in SHC. ZH: point of tangent to spiral, ZH − 100: 100 m before ZH, HZ: point of spiral to tangent, HZ + 100: 100 m after HZ, H: point of spiral to circle, Y: point of circle to spiral, and QZ: middle point of circle.</div>

Discrete Dynamics in Nature and Society

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Figure 3

Figure 3: Driving Risk Affected Areas and Distribution Function of Sharp Horizontal Curves of Expressway 