State troopers are looking for a car involved in a cyclist's death.

Gay Simmons, 40, was killed Monday when a van pulling a trailer clipped her bike along Bee Caves Road at the Loop 360 overpass. A grey car then ran over her and did not stop.

Simmons died before paramedics arrived.

"We're going to do some more checking and see if TxDOT has some intersection cameras to see if we might be able to catch this group of cars coming through the intersection," Ryan McKittrick of the Texas Department of Public Safety said.

The driver of the van was not given a citation.

Cyclists should carry their emergency contact information in case they are in an accident, police said. Officers had a difficult time identifying Simmons and notifying her family because the only form of ID on her was a credit card.

"It's important, if you can't carry your driver's license, please carry your name and some phone numbers where we can contact somebody. Even if you aren't necessarily killed in an accident but injured, it's important that we be able to contact somebody to come help you, to be with you," McKittrick said.

Loop 360 is popular with cyclists because of its wide shoulders despite the fact that vehicle traffic has increased significantly on the road in recent years.