How to understand job status indicators?

Here is a small list of icons for you to understand a change in a job status indicator. The pinpoint of a job will change colors depending on the status changes: 

Black = scheduled job

Blue = job accepted, the worker has viewed and is aware of the job

Orange = A check-in has been registered in the location of the job. The worker has arrived. 

Red = thumbs down, issue, something to report, a job may be incomplete. 

Green = thumbs up, success, job completed 

One checkmark = check-in time stamp registered

Double checkmark = check-in and check-out time stamps registered