On the road you are traveling, the pavement markings change from broken white lines to solid white lines between the lanes of traffic. what does the line change mean?

If this is Driver's Ed, the broken white lines mean that you can cross the line and change lanes. The solid white lines means you cannot cross the line and must stay in that lane. It also marks the shoulder of the road way

Ammunitions are given specific markings and colour codes.

Explanation:

Ammunitions markings and colour codes are vital to enable ammunitions specialist to identify and classify ammunitions for the purpose of record-keeping that will promotes accountability for its use, storage, safe transportation, and quality control, and it can also be used to monitor the transfers of ammunitions between users.