why can bitumen laid on a road be driven on almost instantly , however in carparks etc must not be driven on for up to 2 weeks?

Question

We just had bitumen laid in our carpark at work and have been advised not to drive on it for 2 weeks to let it cure , however when they lay it on a road you can drive on it straight away ?

In: Chemistry

Answer 1

Is there a roof? No sun to help harden the material maybe