There are calls for lighting and speed restrictions on a bridge in Kent where 130 vehicles were involved in a series of crashes in thick fog.
Eight people have serious injuries and a further 35 also needed hospital treatment following the pile-up on the Sheppey crossing on Thursday.
David Bizley from the RAC said: "It was a miracle that nobody was killed."
The A249 bridge was closed for nine hours while the wreckage was cleared. It partially reopened at 17:30 BST.
Some reports said the series of crashes went on for 10 minutes.
Those involved in the collisions described a mass of tangled cars, lorries and vans.
Warning signsMr Bizley said improvements in car design had helped protect occupants.
Edmund King from the AA said: "As a minimum we would like to see matrix warning signs either side of the bridge, so if there is severe weather it can advise that people should slow down.
"There's a good case here for reducing the speed, particularly when there's bad weather."
Councillor Ken Pugh from Swale Borough Council said he had been campaigning for lighting and speed restrictions since the bridge was opened in 2006.
"If the bridge had been lit properly and speed signs had come up, perhaps the tragedy would not have happened," he said.
No hard shoulderThe £100m four-lane crossing connects the Isle of Sheppey with mainland Kent.
It is three-quarters of a mile (1.25km) long and rises to 115ft (35m) at its highest point.
In 2006 the then Chief Constable of Kent, Mike Fuller, said there were "significant concerns" over the safety of the bridge.
They included no emergency telephones, lighting, or hard shoulder.
Mr Fuller also called for a speed limit reduction on the bridge - it is currently the national limit of 70mph.
