But police said that all the relevant information was obtained and updated two days prior to the sentencing, and was made available to the courts by midday on the day of sentencing.
The matter was due to be heard some time after 2.15pm and finally called for sentencing at 4.35pm.
"Christchurch is a busy metropolitan courtroom, and the statement delivered was prepared with due consideration for the victim's family," a police statement said.
"The family's views were represented accurately, and the statement was read to the court by the victim's daughter.
"There are hundreds of sentencing matters called in courtrooms across New Zealand daily, and Police strive to ensure all victim impact statements produced and delivered to the courts in a timely manner."
National manager prosecutions Inspector Gary Allcock accepted the criticism.
"Police take the judge's comments on board as lessons learned, with a view to improving our internal processes," he said.
"Victims and their welfare are at the forefront of the Police's approach to everything we do, as a victim-centred organisation.
"We will continue to work with the victim's family and support them through their grieving process."
Taylor was sentenced to 200 hours of community work for his fatal "moment of inattention".
Judge MacAskill also ordered him to pay $3800 in reparation and disqualified him from driving for nine months.