[Tagging] Reviving the conditions debate

[martinq]

> motor_vehicle:forward:(Mo-Fr 16:00-18:00) = agricultural
> goods:forward:(Mo-Fr 16:00-18:00) = yes
>
> motor_vehicle:backward:(Mo-Fr 16:00-18:00) = agricultural
> goods:backward:(Mo-Fr 06:00-09:00) = yes

This is the point where I think it would be worth to start prefixing the 
expression by "access" (I would use the chance of the new proposal). The 
fact that access is omitted, has mainly historical reasons. hgv=yes 
actually is just a shortcut for access:hgv=yes, which would be more 
consistent with the remaining tagging system, e.g. maxspeed:hgv.

access:(Mo-Fr 06:00-09:00)=yes
access:female=no
...

instead of
(Mo-Fr 06:00-09:00)=yes
female=no

martinq