The Wyoming Department of Transportation (WYDOT) shared with the public recently the department's research on a second vehicle arrestor  on Teton Pass. During this meeting, the public had the chance to provide feedback on the project,

The purpose of the first arrestor was to eliminate the potential of head-on crashes with vehicles that have lost their brakes and have tried to use an existing truck escape ramp located on the opposite side of the roadway.
The first vehicle arrestor project on WYO 22 at reference marker 7.4 was let to contract in late 2015. This arrestor has been used three times within seven months of its opening by vehicles experiencing brake failure.
Steep grades exist over 5.2 miles of WYO 22 prior to the town of Wilson. With a long descent, one arrestor won’t be able to capture all of the errant vehicles that lose their brakes. Accidents are still occurring after numerous other safety devices have been implemented.  
Learn more about the second vehicle arrestor by viewing the following documents.