I'm using the ATLS systems traffic stoppers by Boat. They are 8m, 16, 32m, and 40m long. Here's the list:
<kuid2:134105:50033:1> ATLS Traffic Stopper - 16m Rollable
<kuid2:134105:50039:2> ATLS Traffic Stopper - 40m Rollable
<kuid2:134105:50031:1> ATLS Traffic Stopper - 8m Rollable
<kuid2:134105:50032:1> ATLS Traffic Stopper - 12m Rollable
<kuid:324956:100187> ATLS Traffic Stopper - 24m Rollable**
<kuid2:134105:50037:2> ATLS Traffic Stopper - 32m Rollable
<kuid2:134105:50030:2> ATLS Traffic Stopper - Rollable
**I created the 24m one because the gap between 16 and 32 seemed to be too much for some of the places I need one for. I've reached out to Boat about publishing the 24m one to DLS, but haven't heard back from him.