Taylor was found dead after drivers called police about something in the road near the intersection of Algonquin Rd. and 3rd Ave.
Taylor attended Maine West High School and has a twin brother. His body was found just after 6 p.m. Friday.
"If this was your brothe, wouldn't you want to know what happened to him?" sister Unique Goff said tearfully.
An emotional Goff said she wanted answers Saturday as she and her family struggled with the death of her brother. Choice Taylor died Friday evening -- the apparent victim of a hit-and-run driver. His mother says he was walking home after picking up his paycheck from a grocery store where he worked.
"I didn't expect him to leave home and be found dead in the street," mother Lorraine Taylor said.
Des Plaines police officers responded to the 900-block of Algonquin Road after receiving a number of calls about a mannequin or Halloween prank in the westbound lanes of the street.Just as they arrived, so did 17-year-old Chance Taylor, who found his twin brother lying in the roadway.
The motorist responsible was long gone.
"We ran over there. We asked them, and they told me it was my brother," Chance Taylor said.
Mourners left tokens of love near the scene Saturday as investigators continued to search for Taylor's killer while pleading for any witnesses to the accident to come forward.
"We really don't have information about the type of vehicle, at this point. We're really appealing to the public to come forward with some information about this accident," said Chief Jim Prandini of the Des Plaines Police Department.
Some neighborhood residents say the intersection has always been dangerous.
"We constantly hear cars screeching to a halt. We've seen several accidents," said resident Doris Alicea.
Neighbors have been canvassed by police. One said the street light at the corner of 3rd Ave. and Algonquin Rd. had been out for a few days, making it harder, perhaps, to spot a pedestrian in the intersection.
Choice Taylor was a senior who was scheduled to graduate from Maine West High School in June. ABC7 is told he wanted to be a computer technician.
Friends say he was kind kid who had a lot of interests, including art, chess, video games and fishing.
As his family mourns, they are also asking for closure.
"Whoever did this to my brother, we just want to know what happened. Just please come forward," said Tatiana Lamy, the victim's sister. "We just want to know what happened to him."
Family members say they will be putting up fliers. They are asking anyone with information to contact the Des Plaines police or Crime Stoppers.
Friends and classmates of Choice Taylor set up a Facebook page to share their memories, thoughts and grief. As of Saturday evening, there had been more than 1,100 hits.
As the investigation continues, Des Plaines police say they plan to have crisis counselors at the teen's high school to help students, faculty and staff deal with the loss.