They can be the bane of the morning commuter, causing traffic jams and delays throughout the capital. But could roadworks soon be a thing of the past? A new robot has been built that can repair leaking gas mains without the need to dig up our roads.
Today it was given its first test ride in London, and Dan Hewitt went along.
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"All it takes is for somebody to see me - and I could just die, just like that. I could want to go to the shop and not come home."
Before the killing, Peters searched the internet for "serial killers", "treatment of child killers in prison" and "premeditated murder".
Arriva Rail North, Greater Anglia and South Western Railway are all affected.