Close Call Truck Crash Las Vegas

Going along I-15 in Las Vegas when the traffic came upon a Nevada Department of Transportation (NDOT) portable sign truck that has stopped in the middle of the left lane. Traffic is moving 65-70 MPH and starts locking it down. I’d just cleared a semi truck to my right and could see the traffic coming to a halt. I didn’t have enough room to get back into the lane to my right so I started braking and watchin my rear. Could see the truck come along side to my right and suddenly he locked up the br