Drink-driving calculator

How has this been worked out?

Months = calendar months (ie 30 or 31 days (or 28/29, if Feb) depending on when disqualification begins).

Disqualification is extended by half of any custodial term imposed. Extension is disregarded when calculating rehabilitation driving course reduction. Note: the extension of one-half of the custodial term applies even if the offender is liable to be released having served 40% of the custodial sentence

Half days are rounded up (eg a 3-day custodial sentence would be halved and rounded up to show a 2-day extension on disqualification).

“Disqualification end date” is the last date of the disqualification. The offender is not permitted to drive again until the following day. A new driving licence must be applied for if the ban has been for 56 days or more.