This freeware version of Driving Hours Tracker will keep track of your current driving session. When on break you can stop tracking and it will keep registering a break until you start tracking again.

informs you on 15min break (split break).
informs you on 45min break.
Keeps track of your total driving time.
If you stop for less then 15 min, this time will not count towards break.
informs you if you've done 9hour break since last shutdown of the app.
automatic break/driving tacho switch using GPS
Speed indicator (GPS based)
Satellite info.

This is a limited functionality freeware version.
When the full app is functional, meaning it will keep track according to the full regulations, this app is available for a small fee.

for more info about the app and the developer, visit www.bbbwex.com

Updated with use of vibrations and colors for clarity...
45 min break checkmark now works

Screenshots: