1. Get that rock chip repaired as soon as possible to avoid it spreading to a size where the windshield needs to be replaced.
2. Change your windshield wipers before that wear down enough to scratch the windshield (we see it way too often).
3. Stay a good distance back from construction vehicles. They are infamous for dropping small to large size debris which all can damage your windshield.
If you notice a small chip or crack, address it promptly by getting it repaired. RV Glass Repair technicians offer services to fix minor damage, which is more cost-effective than a full replacement.