The justice minister says she isn't able to predict the impact proposed 20mph limits will have on speeding offences.
Jane Poole-Wilson responded to a question in the House of Keys this week from Douglas Central MHK Chris Thomas.
She also said existing data from the police and courts about past speeding offences couldn't be analysed in that way.
The minister went on to explain why she personally couldn't make predictions about the future:
Peel ready for bonfire and fireworks later
Government: "UK never told us about child murderer"
Farm shop's newest worker needs your name suggestions
Bus Vannin gives update on staffing problems and routes affected today
Toilets vandalised for fourth time in a month
Poppy gets fur-ever home after sparking rescue operation in Douglas
Council gets eight complaints about James Brown in six months
More bus staffing problems this weekend