When someone injures someone with their vehicle, if they stop and call for help, they may save the victims' lives.
It is also the law.  (A driver must also stop and call for help if they have done any property damage.)

A driver who commits a hit-and-run violation can be charged with a misdemeanor or a felony, depending on the injuries
involved, according to the Indiana Code.
Jan 20        Driver crashes into westside grocery store, flees scene
Jan 21        Police search for hit-and-run driver who injured 11-year-old
Jan 24        IMPD seeks help locating hit-and-run vehicle that killed a woman on the east side
Feb 07       IMPD investigating fatal hit-and-run in Castleton
Mar 17      Man suspected of drunken driving arrested in fatal hit-and-run
Mar 31      Woman arrested in fatal Broad Ripple hit-and-run
June 23     Pedestrian struck, killed in hit-and-run on I-465    
June 24     
Search on for boat in hit-and-run on Geist Reservoir  
July 01      
Police looking for hit-and-run driver who caused crash injuring pro fisherman  
July 05      
17-year-old Fishers boy critically hurt in hit-and-run  
July 29      
IMPD working to locate car involved in July hit-and-run that injured mother, 12-year-old girl
Aug 03      Woman killed in hit-and-run on city's east side
Aug 21      2 in hospital after hit-and-run involving motorcycle  |  Police have suspect in hit-and-run crash that seriously injured two
Aug 27      Police seek car used in fatal motorcycle hit-and-run
Aug 30      Man left on side of Indy road after bike struck by hit-and-run driver
Sep 02      Pedestrian critically injured in hit-and-run
Sep 09      IMPD searches for hit-and-run driver after man struck
Sep 11      Officer working Walmart security struck by vehicle while trying to stop shoplifter  
Sep 11      
Juvenile killed in hit-and-run crash on Indy’s northwest side  |  Indianapolis man faces charges for hit-and-run that killed 14-year-old
Sep 20      Perry Township school bus struck by hit-and-run driver
Oct 13      Dad says final goodbye to son fatally wounded in hit-and-run   
Oct 16      
IndyGo bus involved in hit-and-run crash  
Oct 17      
Man part of October crime spree charged with murder for hit-and-run
Oct 18      Police seek SUV after man dies in hit-and-run also involving bus  
Oct 28      
Police seek car that hit, killed 1-year-old girl in driveway  
Nov 9       
1 injured in hit-and-run on southeast side  
Dec 8        
Indianapolis family wants answers as loved one fights for his life after hit-and-run
Dec 16      Driver flees after striking Centerville man on I-65 ramp  
Dec 17      
IMPD arrests man in connection with deadly north side hit-and-run    
Dec 18      
Woman dies in possible hit-and-run crash in east-side alley