Completely agree with all comments below... Speed cameras is another one, in the UK - motorway Speed cameras are very often mirrored both directions. In all cases, by the time the report has been made for one direction, you are too far away to accurately report the other.

On the iphone client, when you report a hazard, you can enter a detailed text description.
It also has a 'my lane/other lane' button.

Other than a 2 lane highway most all other highways have 2 shoulders and 3 ,4 or 5 lanes. When reporting hazzard the option of which shoulder ( right or left)could be a better alert than just "shoulder". Also road work or road crew should be added as to what type of hazzard on shoulder. Also with accidents or debris on highway the ability to say left lane, middle lane 2 right lanes etc could warn Wazers ahead of time so they could avoid the reported shoulder or lane hazzard. The other evening traveling Rt 95 there was a ladder in both the left lane and lane next to it. I did not know how to or didnt have the option to report which lanes. I was able to go off on the shoulder to avoid it. Traffic behind me was very heavy and traveling at 70 to 80 mph.
Through my rear view mirror I could see the car in left lane swerved around it but the next lane could not swerve in either direction thus hitting the ladder and then a chain reaction of cars trying to avoid yet hitting other vehicles around them. to recap options of right or left shoulder and right left or middle lanes would be an asset to alert wazers

Many times police sit in the median and are watching both directions on a highway, a "middle" option for lane would be beneficial so both directions can be warned of a speed trap.

It would be nice to have an option when reporting something, especially Police, of Median along with sides. This would alert wazers in both lanes of the report

9 times out of 10, construction affects traffic flow in both directions and 10 times out of 10 it does for accidents as everyone slows down to look.

And also take into account reporting inside a roundabout. Other lane should be: the other "side" of the roundabout.

Also, definetely add both lines option for police and speedcams! New speedcams able to control both lanes on small roads (one-two lanes each direction).
Or - add new parametr into client "warn me even if police not on my line"

Label lane with direction?

Also combine this with set location for report

http://waze.uservoice.com/forums/59223-client-how-can-we-improve-waze-on-your-phone-/suggestions/1160049-allow-the-ability-to-specify-the-location-of-a-report-especially-speed-traps

And how about calling it "direction" instead of "lane"? That confused me at first!

please embrace this suggestion. I often end up making two reports (one for each direction) as roadworks with temporary traffic lights and things like accidents invariably cock up both lanes of traffic

To piggy back on this suggestion, please add common problems in a drop down so I do not have to text while driving. Examples would include "slow traffic", "construction slowing traffic", "Accident", etc.

This still bugs me when I pass troopers sitting in the median getting both directions. I would want the pop-up going either direction. Seems like an easy fix on the client side not sure on the back end.