mcycle package:MASS R Documentation Data from a Simulated Motorcycle Accident Description: A data frame giving a series of measurements of head acceleration in a simulated motorcycle accident, used to test crash helmets. Usage: mcycle Format: 'times' in milliseconds after impact 'accel' in g Source: Silverman, B. W. (1985) Some aspects of the spline smoothing approach to non-parametric curve fitting. _Journal of the Royal Statistical Society series B_ *47*, 1-52. References: Venables, W. N. and Ripley, B. D. (1999) _Modern Applied Statistics with S-PLUS._ Third Edition. Springer.