Twenty-one people died in New York City traffic in January, and 3,899 were injured, according to the latest NYPD crash data report [PDF].

As of the end of January, 13 pedestrians and cyclists were reported killed by city motorists this year, and 1,191 injured, compared to 20 deaths and 1,297 injuries for the same period in 2013.

Citywide, at least 12 pedestrians and one cyclist were fatally struck by drivers. Among the victims were Xiaoci Hu, Mosa Khatun, Alexander Shear, Cooper Stock, Nydja Herring, Angela Hurtado, Pedro Santiago, Samantha Lee, James Benedict, and unnamed male pedestrians in the Bronx and Queens. At least one child and four seniors were killed by motorists in January: Cooper Stock, 9; Xiaoci Hu, 75; Alexander Shear, 73; Angela Hurtado, 68; and James Benedict, 67.

Across the city, 1,075 pedestrians and 116 cyclists were reported hurt in collisions with motor vehicles. Per NYPD policy, few of these crashes were investigated by trained officers.

Of 11 fatal crashes reported by Streetsblog and other outlets, one motorist was known to have been charged for causing a death. Michael Pogorzelski was charged with manslaughter and DWI for the crash that killed Staten Island pedestrian James Benedict. Historically, nearly half of motorists who kill a New York City pedestrian or cyclist do not receive so much as a citation for careless driving.

Seven motorists and one passenger died in the city in January; 1,295 and 1,413 were injured, respectively.

There were 16,597 motor vehicle crashes in the city last month, including 2,938 that resulted in injury or death.

Download January NYPD summons data here. Crashes are mapped here. Crash and summons data from prior months is available in multiple formats here.

After the jump: contributing factors for crashes resulting in injury and death.