The "totally inappropriate" speed limit on a busy A-road where a woman was killed in a car crash needs to be lowered, a new petition claims.

The stretch of the A413 that runs between Denham, Gerrards Cross and Chalfont St Peter is a national speed limit road - something Jagdeep Kandola, who has set up the petition, says must change.

In October, a 23-year-old Slough woman was killed in a crash on the A413 between the A40 Oxford Road and the Joiners Lane roundabout.

Simran Johal, known to her friends as Simi, was one of five people in a blue Volkswagen Golf which mounted a roundabout and rolled onto its roof on October 10.

Mr Kandola says the Kingsway roundabout - which is believed to be where the fatal crash happened - is the most dangerous.

On the petition, he wrote: "This speed limit is totally inappropriate, especially between Kingsway and Greyhound roundabout connecting Gerrards Cross and Chalfont St Peter.

"There is not even a reduction in speed as you approach Kingsway roundabout from either side. Joining this roundabout is like taking your life into your own hands and recently there have been a spate of incidents and accidents causing risk to safety for local residents and road users.

"The road is also used by pedestrians crossing from the Chalfont Heights estate going towards Gerrards Cross to reach the station and local schools.

"The section of road between the two roundabouts is small and does not justify a 70mph speed limit and a reduction in speed limit would make an immaterial difference to journey times.

"Immediately, at the Greyhound roundabout the limit drops to 30mph - a slowdown which is much too abrupt.

"Claims of this stretch of road’s use as a relief road and therefore warranting national speed limit are unfounded given that the speed limit drops shortly after."

Mr Kandola says the petition aims to build on existing campaigns to reduce the speed limit on the stretch of road to 40mph.

So far, more than 460 people have signed, including Graham Bounds, who lives nearby.

He wrote: "A significant proportion of divers approaching the Kingsway roundabout on the A413, from either direction, treat it like a chicane and attempt to go around it without reducing their speed.

"This makes it difficult and dangerous for drivers and cyclists to join the roundabout from Kingsway or the access road from Chalfont Heights and the Golf Club."

Another local, Patricia Routledge, added: "There is no need to have a 70mph on this stretch of road, it’s ludicrous, I do not want to hear of any further deaths which can be easily prevented."

To sign, go to www.change.org/p/buckinghamshire-council-reduction-of-the-a413-speed-limit-in-gerrards-cross-and-chalfont-st-peter