Recently a1’d during a training session and want to get clarification. I took position with vehicle 1 on rwy 4, they were doing paint work no restrictions. Aircraft inbound for rwy 10 (crossing rwy). Vehicle 1 told to hold short of rwy 10. I was A1 because there are no hold short lines on rwy 4 for rwy 10. 7110.65 3-7-4 note says airport management is responsible for hold lines/signs. Also says operator is responsible for positioning at line/sign or point. Does the lack of a hold short line mean they cannot hold short. If able provide a reference.