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Some city councillors have expressed concerns about the vehicles and are angry over a perceived lack of consultation.
A memorandum of understanding was signed between Dunedin City Council staff and the company on December 18, but Lime appears to have breached the provision that its scooters would be brought in overnight.
Mr Cull said the council had ''no say'' in the arrival of Lime scooters on January 10 and staff advised the only thing to do was to meet Lime and create a voluntary agreement.
''Given that we didn't have any jurisdiction to limit where they go or if they were set up here, it was felt that an MOU could enhance safety and public understanding.''
Lime said in a statement yesterday it aimed ''to remove all scooters from the street every night. Our ops team and juicers work together and pick up the vast majority of scooters''.
However people have been seen using scooters overnight, and one ''juicer'' - paid to recharge scooters - said this week it was up to juicers whether they brought them in.
If Lime was not taking scooters off the streets, the council would be asking it to explain, Mr Cull said.
A bylaw regulating scooter use was an option if Lime did not comply with the voluntary agreement, but the council would have to prove one was required.
Aside from January 18, when a woman on a scooter sustained serious injuries in an accident with a truck, the launch of the scooters in the city had gone ''surprisingly well''.
Most problematic was that the scooters could be used on footpaths without restrictions.
Licensing the scooters, so Lime would have to pay to use the footpath, was not an option for the council as it could not do so under its bylaws, a council statement said on Thursday.
Mr Cull described the scooters as a ''wonderful innovation'' but said NZ Transport Agency's regulations on them - for instance, over helmets- needed an overhaul to make them consistent.
Cr Doug Hall claimed Lime had breached other provisions of the agreement including having 1.2m clearance on the footpath.
He had seen some parked in such a way that mobility scooters users were forced on to the uneven edge of the kerb near pedestrian crossings.
Cr Rachel Elder said there were ''health and safety issues to be addressed'' when it came to scooters on the pavement, such as the ''fear factor'' for pedestrians.
Crs Hall, Lee Vandervis and Jim O'Malley said while they knew the scooters were coming at some point, they first heard about the agreement with the council was after it had been signed.
''The councillors seem to be the last to know most things that are going on,'' Cr Hall said.
Cr Vandervis said he had written a letter of complaint to the Minister of Local Government about the MOU as well as other incidents in which council staff had not consulted councillors.
''It's absolutely appalling, I think.''
However the council statement on Thursday said there had been briefings in October and November letting councillors know the MOU was being prepared, which was backed up by Mr Cull and some other councillors.
In hindsight, the council agreed it would have been ''good to circulate the MOU to councillors earlier''.