Removing markings from tarmac

[bmj1]

Any ideas how I can remove marks like this from tarmac? Not sure what it was done with but looks to me like it was spray painted on..

[SteamyTea]

When you find out, I need to cover some white lines near speed cameras.

[ToughButterCup]

More white spray paint and turn the arrow into 'pavement'  art ?  .....

[SteamyTea]

42 minutes ago, ToughButterCup said:

More white spray paint and turn the arrow into 'pavement'  art ?  .....

Make a change from the pavement oysters and pizza that appear on a Saturday morning.

[saveasteading]

It usually comes off in a few months unless the surface was clean. If it was an inappropriate marking, either offensive or misleading traffic, then it could be sprayed over in black, but that sticks even more.

Avoid any solving as it may melt the asphalt.

I'd spread some earth, brush it around, remove, repeat. Or pressure wash should do it easily.