StreetSafe is a pilot service aimed at women and girls to help anonymously flag unsafe places to the police.
StreetSafe, a new digital pilot, will allow people to anonymously log unsafe areas of Milton Keynes.
The site allows users to drop a pin on an exact location and list reasons as to why they felt unsafe.
Areas may be reported due to environmental issues, eg street lighting, abandoned buildings or vandalism and/or because of some behaviours, eg being followed or verbally abused.
The data will then be collected and used to make areas safer, such as through night-time patrols or the installation of better street lighting.
The map will be available on the national policing website for three months while the pilot takes place.
Safeguarding minister Victoria Atkins said: "No one should fear walking the streets, but for too many women and girls, the threat of intimidation and harassment whilst going about their everyday lives is all too familiar.
"StreetSafe allows the public to flag concerns directly to police, ensuring that those responsible for making our streets safer use the data to improve safety and understand how local areas can better respond."
The website launch comes as the Home Office is set to announce the next tranche of funding for its Safer Streets scheme.
Police are urging residents to remember that the new pilot scheme is not intended as an alternative for reporting serious incidents and will allow people to raise concerns with the police regardless of whether a crime has been committed.
As it is anonymous, police won't be able to take action on individual incidents.
Please still call 999 if you are in immediate danger and report any non-emergency crimes online or via 101.