Is a windshield with several chips in it that much more
vulnerable to cracking the next time another rock hits it?
possible but no way to know for sure. If your windshield has multiple chips and some in the line of site, visit you local auto glass shop and see if they think it is safe. If not they can contact your insurance company on the spot and have a replacement authorized.
Search Maintenance & Repair Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Maintenance & Repair Experts