Hi
Yes its an active camera, I know this because someone I know got an $80 ticket on Waipa St 2 months ago and took about 4 weeks to get it. Time varies depending on how busy they are but expect 2 to 4 weeks.I have no idea re the temporary lower limit.
Here is a link to all the speed cameras
http://maps.aa.co.nz/browse/travel/s...6.808240700000
You do not get any demerit points on fixed speeding cameras although it is logged against whoever is the registered owner of the vehicle. This will not apply to you but if someone else was driving the vehicle and its registered to you then you need to notify them when the paperwork comes through who was driving