Friends and relatives of the two women who were killed when their car left the road in Swindon have been warned by police to avoid leaving flowers at the crash scene for their own safety.
"We have had one or two people pulling up at the scene to pay their respects," a police spokesman said.
"This stretch of road is a clearway with traffic travelling at speeds of up to 70mph.
"Anyone who attempts to stop, no matter how briefly, could be putting themselves and others at risk of serious injury.
More top news
US superstore apologises after a customer who had his request for a Confederate flag cake rejected managed to get an ISIS flag cake instead.
After Heather Watson becomes the latest tennis star reprimanded for 'audible obscenity', we ask - what happens to the players who swear?
A new currency might be appealing for some Greeks, but there would be a painful wait before new banknotes and coins could be issued.