Driveway Intruders?

My home is on a fairly busy street and lately I've had people actually using my circular driveway to make u-turns.
It wouldn't be so bad... except to say my driveway goes around my house not in front of it.
Is there anything I can do... short of installing a fence... to keep these intruders out??? ‪#‎Drivewayspikes‬ @Drivewayspikes.
#Drivewayspike      www.drivewayspikes.com