I drove out into the national forest today, but I forgot to be on the lookout for deer.
By the time I saw the first batch, I didn't have enough time to properly react -- our fates were up to them. Thankfully they decided to run away from the road.
The next time, I was scanning ahead for them and came to a crawl when I saw them. They decided running across the road was the best exit, but they had plenty of space to do so.
There were lots more deer when I was hiking, but the only concern there is making sure they aren't black bears.