A driver escaped unscathed after crashing through a garden wall into a house.
Janice Beal, 63, lost control of her new Peugeot 206 automatic as she drove along Old Shoreham Road, Shoreham, yesterday.
It is believed she had used the accelerator instead of the brakes.
The accident happened less than 24 hours after a man was killed when his car left the road and smashed into a block of flats.
Police have not released the identity of the 25-year-old Eastbourne driver whose Vauxhall Astra Turbo left the road in King Offa Way, Bexhill. Residents in the street are now demanding safety measures be installed after the second fatal crash within three months.
Mrs Beal's silver saloon swerved off the road, narrowly missing a car parked in the drive of a house on the busy stretch of road between the Norfolk Bridge and Old Shoreham.
It demolished the garden wall of the neighbouring terraced house, again missing a parked car, and smashed into a front porch.
The car was badly damaged and Mrs Beal, who lives in Old Shoreham, was left shocked but otherwise unhurt. She was taken to Worthing General Hospital for a check-up as a precaution.
Her son, who arrived at the scene shortly afterwards, said: "She had one of those senior moments. She said she pressed the accelerator instead of the brake pedal and lost control. Thankfully, she is all right."
Judy Davies was at the bottom of her 150ft garden when she heard the crash and discovered the car had partly demolished her porch when she went to check what had happened.
Mrs Davies, who works at the Royal Mail's main sorting office at Gatwick, said: "The lady was out and standing by the car when I got there.
"I took her into the house and made her a cup of tea because she was obviously shocked. She apologised for the damage but the main thing is she was not seriously injured."
In Bexhill, residents want barriers and more speed cameras to be introduced to cut the risk of crashes in King Offa Way.
In the latest crash, on Tuesday evening, the driver was flung 15ft from his car, which hit a ground- floor flat.
Two people in their living room were rescued after being trapped beneath masonry.
Despite attempts by 999 crews to revive the lone driver, he was pronounced dead at the Conquest Hospital in Hastings.
The Highways Agency, which has responsibility for trunk roads, said a study was being prepared into improving King Offa Way for road users.
Meanwhile, structural engineers had last night still sealed off the flat, which has a gaping hole about 15ft high.
Police said it has been declared unsafe by structural engineers.
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