asphalt isn't usually formed. It's a heated granular material that's placed and then rolled to densify it. It doesn't flow like concrete.

Without forms the paste portion of the concrete mix would tend to flow out the edges of the pour and leave just aggregate behind.

The only time they use a "form" with asphalt is when a clearly defined edge is desired/required. Otherwise, it just slopes at the ends.

My 0.02

Thanks for your response. I guess I'm okay then.

One more question: If it slopes at the ends wouldn't it be weaker there?

weaker how? the asphalt is just a toppping/finish surface, it has no real "strength". Yes it will settle and separate more easily but providing the base it stable, it shouldn't go anywhere.

If figure if it was thinner on the edges then it would crack easier there? When you say "separate more easily" are you referring to cracking?

I assume that the edges are tapered. It is diffcult to roll these areas so you can likely see a granular finsih as opposed to a solid looking edge. Movement at the edges of the granular face would appear more as a "separation" of material than a "crack" but the net result is the same.

Short answer is "yes".