GA: I-75 express lane exits

[Eth]

The new I-75 express lanes in the Atlanta area include exits/entrances at locations that aren't currently points in TM, so I think it would make sense to add them.

These exits don't have posted numbers, so some improvisation may be needed (see I-85's point "87A" at the HOV-only access to GA 236 as precedent).

Points to be added:
Terrell Mill Rd (label 260A?)
GA3ConMar (264?)
Big Shanty Rd (270?)
Hickory Grove Rd (274 or 275?)

These are all on the express lanes on the north side. The only direct exit from the southside lanes is at Jonesboro Rd, which should be effectively covered by existing point 221. There also don't appear to be any of these to deal with on I-575.

[mapmikey]

For the I-495 express lanes in Virginia the actual crossroad name (US 29) is used instead of an exit designation that doesn't exist...

[Eth]

For the I-495 express lanes in Virginia the actual crossroad name (US 29) is used instead of an exit designation that doesn't exist...

That's probably the better way, though I'm happy to leave that determination up to the actual maintainers (and in that case, perhaps the point on GA I-85 should be changed from 87A to GA236).

[michih]

We do currently not have a specific maintainer for GA. I've added the points:

TelMillRd
GA3
BigShaRd
HicGroRd

https://github.com/TravelMapping/HighwayData/pull/2449/commits/39aa1eb16c2c2c98e9df06b8a191287c63740489

[Eth]

Not to be "that guy", but...

TelMillRd → TerMillRd (spelling)
GA3 → GA3ConMar (different route)

[michih]

Thanks, I'll change TelMillRd to TerMillRd but leave GA3 as-is because I think it's fine according to our rules, isn't it?

[froggie]

^ No, it's actually legitimately GA3ConMar.

[michih]

Done