exactly, point it at the road so you can see any potholes
Ah, yes, poor road surfaces.
I also keep a watchful eye open for those drain covers whose grilles include slits wide enough for a cycle wheel and are aligned parallel to the kerb - a very great hazard.
It's noticeable that some of the deepest holes or other damage to the road surface is also on routes which carry the largest and heaviest vehicles (for obvious reasons, perhaps). That creates the dangerous conflict of large vehicles in the same place as cyclists moving left and right to avoid the dips.
There are some good examples on London's Euston Road and Edinburgh's Queensferry Road.
I find that cycling on busy bus routes creates quite a few challenges (such as Euston Road or Princes Street) where there are very many bus stops which serve different bus routes. Consequently, the busses are continually alternating between lanes, to pass one bus then to pull in for its own stop. A cyclist in the left of the left hand lane also wants to pass the stopped buses, and so is also weaving in and out of the 2 lanes. Add a few potholes, drain covers, taxis and delivery vans, and you have a recipie for conflict!
Anyway, here's a daft ASL I saw in north-central Manchester a few days ago, in advance of a pavement! - with no cyclists to be seen anywhere apart from me:
[click to enlarge]
There are some junctions in Edinburgh where it's almost guaranteed that people will walk out into the road in front of you without looking.
Yes. It seems to be true pretty much anywhere I go.