1. I have an 18 wheels comertial truck. 1-How many of this traction aids should i have to be safe in icy/snow road? It says comertial truck needs ONE KIT but to order, it asks for quantity!!! Should i enter 1 or 2? 2-i also would like to see a video of installing them. 3-looking to see reviews but did not find any. Thank you
2. One more concern that i have, I drive 30 miles on icy road and snow on (I 70 )denver colirado every week.its about 10 mimes to drive up hills. IS THIS traction aid SAFE to use? Thank you