nzherald.co.nz

Ask Phoebe: Many forms of paper on recycling list

By Phoebe Falconer
5:30 AM Thursday Jan 24, 2013
 Photo / APN

Photo / APN

We are keen recyclers and have friends who are too. We have different views on what paper can be recycled. We put all paper into the recycling, whether it's clean or not, i.e. tissues, old wrapping paper, soggy paper, etc. They think only clean dry paper can be recycled. Can you clarify for us please? Mary Irwin, Auckland.

The former Auckland Regional Council website has a handy list of recyclable paper, which one assumes still applies. It includes paper cups and plates, paper towels (whether used or not), lunch bags, window envelopes, cardboard cartons and packaging, magazines and newspapers. Whether the material is wet or dry is of little importance. I would hesitate to put used tissues in the recycling, though, from a hygiene point of view.

At the Appian Way end of Civic Crescent near the Albany Mall there are parking spaces that have a sign: P120. Pay & Display. 8am-6pm. Every Day

The only Pay & Display machines are about 300m away. It appears as if there may have been a Pay & Display machine there at some stage but it has been removed. To avoid confusion as to whether or not you are supposed to pay to park surely they could delete the Pay & Display line from the sign if it is now a free 120 minute parking zone. Christine Bercht, Albany.

The P120 means that you are restricted to parking in these spaces for 120 minutes, but you must still pay for the privilege within the designated hours.

I drive down Nelson St in the city on my way to work, and am always irritated and puzzled by the fact that the lights at every intersection are not co-ordinated. Why is this? David Williamson, Balmoral.

A traffic engineer has supplied the following, which may go some way towards alleviating your irritation.

Traffic signals adjust green time based on the spacing and numbers of vehicles passing the stop line sensor. Each direction gets an allocated amount of green time every cycle. A cycle is the total time for every direction (or phase) to run once. More vehicles crossing the sensor allows more green time in the next cycle. But the system also uses spacing between vehicles. The bigger the gap between cars means shorter green time this cycle. This is to do with the calculation determining the most efficient flow of vehicles. So if you have a slow truck in front of you which leaves a big gap in front of it, the green time will get cut short. This spare green time will then be given to the next direction to use. If people stay within 3m of the car ahead of them when driving over the stop line (providing it is safe to do so), they will end up with more green time (up to a limit).

By Phoebe Falconer
Pacman (Hamilton) | 09:08AM Thursday, 24 Jan 2013
I would not consider 3m to be safe. Maybe 5m.
There have been too many times where the guy in front has braked or slowed down at the line for no apparent reason. No wonder there are some lights that barely let any traffic through.
Richard Kam (Howick) | 09:48AM Friday, 25 Jan 2013
Don't you hate those drivers, I do encountered quite a few even though I don't drive that much, inconsiderate or half their brain aren't working.
Ross (Titirangi) | 09:48AM Friday, 25 Jan 2013
"More vehicles crossing the sensor allows more green time in the next cycle."

That cannot be true.

That implies that the lights are programmed to stay green for ages even if all the traffic has already gone. I know that is how it often seems, but you can't tell me that anybody would be stupid enough to deliberately design it that way!

If only the modern lights worked as well as they used to back when there were pneumatic pads operating a big box of clattering relays, we'd be a lot better off. Microprocessors ought to be able to do even better, but instead we seem to be wasting half our driving time sitting and waiting at red lights for non-existent traffic to cross empty intersections.
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