One of the county’s police sergeants has a criminal record for dangerous driving.
Across the country at least 944 serving officers and police community support officers have convictions.
The figures have been released by forces under a Freedom of Information request, published in the national media this week.
Herts Constabulary spokesman Olivia Finucane said: “The sergeant was convicted for dangerous driving almost four years ago after being involved in a collision whilst responding to an emergency call.
“Following a full investigation the officer was prosecuted and convicted for a dangerous driving offence and was also subjected to disciplinary action.
“Hertfordshire Constabulary takes robust action when dealing with police officers or staff who break the law, and will always seek to take disciplinary action in addition to the outcome of a conviction.”