More than 17 000 people are calling on the City of Onkaparinga to improve the signage and lighting at the site of last week's fatal accident in McLaren Vale.

Ivy-Rose Hughes, 19, was killed last Wednesday night when the car she was travelling in was involved in an accident at the intersection of Malpas and Main Roads.

She was a passenger in a Mazda that overturned when it collided with a ute. 

Seven other people were injured in the crash, including both drivers.

Michael Pertl initiated the petition, writing “One of my friends recently passed away due to a T-bone car accident in McLaren Vale, at the Malpas and Main road intersection.”

“This intersection is notorious for having poor signage and lighting regarding the give-way sign and has caused multiple accidents in the past. 

“The goal of this petition is to reach the Onkaparinga Council who oversee this area in McLaren Vale, and hopefully improve the lighting and signage so that this can't happen to anyone else in the future.”

The petition can be signed and viewed online.