The two cases happened in the early hours Cambridge Road and Burnaby Road.
Memorial For Jade
Friends of Jade Clark, the teenager who was killed in a crash near Ringwood last week, are trying to arrange a permanent memorial for her.
Megan Billing from Burley and two of her friends have set up a Facebook page - 'In memory of Jade Clark, gone but never forgotten,' so that people can pay their respects to the popular 16-year-old and post their favourite pictures.
"She was bubbly, lively, funny, she never put anyone down and was always trying to cheer people up. We are still trying to come to terms with the fact she's gone," Megan told Heart.
They've also organised a pink and white balloon release for the teenager on Saturday March 9 at Carvers Recreation ground in Ringwood, where friends and family can write messages to her and release them into the air.
Then in June, just a week after Jade would have turned 17, they are hoping to put on a fun day for families at Ringwood Rugby Club with the aim of raising enough money to pay for a permanent memorial to her in Ringwood.
"Jade was a member of Hampshire Fire and Rescue Service's Young Firefighters Association which she really enjoyed," said Megan. "We are hoping to get the firefighters along to the fun day and have things like a bouncy castle, face painting, a hog roast and a raffle. She would enjoy that."
Jade died at 8.23pm on Sunday 24 February, after she was knocked off her scooter in a multi-vehicle collision on the westbound carriageway of the A31 near the Ashley Heath roundabout.
Traffic Inspector Matt Butler said: "We know from our investigation so far that a number of vehicles were involved in the incident and one of these vehicles - a Volvo XC90 - left the scene before police arrived.
"I need to trace this vehicle and urge anyone with information to contact me. I particularly appeal to the driver to get in touch.
"The front of the vehicle will be damaged. If anyone is aware of a Volvo XC90 which has sustained damage or has been repaired in the last few days, they should call police urgently.
"I also urge any witnesses to the collision, and anyone with information, to contact me."
Witnesses and anyone with information should call Dorset Police in confidence on 101.
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