HELLO, I'M JUST TRYING TO MAKE CONTACT WITH A QUESTION ABOUT TRUCKS WITH AIR BRAKES. THERE SEEM TO ALWAYS BE COLORED AIR LINES, 4 - 5 COLORS. ARE THERE ANY GUIDELINES AS TO WHERE EACH COLOR GOES OR A COMMON UNIVERSAL PURPOSE FOR EACH COLOR? IF EACH COLOR DOESN'T SERVE A SPECIFIC PURPOSE, THIS IS VERY CONFUSING. ANY HELP WILL BE GREATLY APPRECIATED!! *TR
- NHTSA ID
- 10592675
- Incident
- May 20, 2014