"Police issued tickets to more than half of all stopped drivers and arrested about 2.4% of drivers. Male drivers were 3 times more likely than female drivers to be arrested, and black drivers were twice as likely as white drivers to be arrested."

Source

Durose, Matthew R., Smith, Erica L., and Langan, Patrick A., PhD, "Contacts Between Police and the Public, 2005," (NCJ215243) (Washington, DC: Bureau of Justice Statistics, April 2007), p. 1.
http://www.bjs.gov/content/pu…