Final answer:
The provided references do not directly answer the question regarding pedestrian deaths in 2012; such data would typically be sourced from traffic-related government databases.
Step-by-step explanation:
The question about the number of pedestrians killed in 2012 does not directly parallel the references provided,
which provide data on other types of deaths such as police deaths, driver deaths, and victims of single-bias incidents. None of the references specifically mention the number of pedestrian deaths for that year.
However, typically this type of data can be found through government traffic safety sources or databases such as those maintained by the National Highway Traffic Safety Administration (NHTSA) in the United States.
Your complete question is: How many pedestrians were killed in 2012?