This dataset, downloaded from Buzzdata, contains bicycle collision data for 31,480 accidents in Toronto Canada between the years 1986 thru 2010.

There were several fields that had corrupted data (latitude/longitude with text, dates with random text), inconsistent data (different street name abbreviations, different ways of marking missing data) and improper data (time of day formatted as HHMM instead of HH:MM, age with leading zeros) which I cleaned up.