The Department of Transportation will be tripling the number of slow zones around schools, with speed limits of 20 mph, in addition to a pilot program in the Bronx that would slow cars to 20 mph in entire areas, rather than only individual streets. The department plans for at least 75 reduced speed zones if the pilot program is successful. Research shows that for every additional mile per hour that a car drives over a 30 mph limit, the likelihood of a crash being fatal increases exponentially. Statistically, a crash at 30 mph will result in fatalities for 40 percent of struck pedestrians, while at 20 miles an hour, fatalities would drop to 10 percent.