Supplement to “Road safety impact of Ontario street racing and stunt driving law” by Aizhan Meirambayeva, Evelyn Vingilis, A. Ian McLeod, Yoassry Elzohairy, Jinkun Xiao, Guangyong Zou, Yuanhao Lai

Lattice time series display of the causality time series and R markdown script

These interventions were fit using R and the web output below produced using R Studio’s markdown. The markdown scripts can be run to reproduce the results.

1.1 Univariate step intervention models

· mature female causalities

· young female causalities

· mature male causalities

· young male causalities

RStudio markdown scripts: IAmf.Rmd, IAyf.Rmd, IAmm.Rmd, IAym.Rmd

1.2 Step intervention models with non-speeding causalities covariate

· mature female causalities

· young female causalities

· mature male causalities

· young male causalities

RStudio markdown scripts: IAmfc.Rmd, IAyfc.Rmd, IAmmc.Rmd, IAymc.Rmd

1.3 Dynamic intervention model for young male causalities

RStudio markdown script: DIAymc.Rmd

Analysis of average speed time series and R markdown script