Turn partially-empty trucks into full earning potential
Shared Truckload (STL) AddOnsTM don’t stop with filling your “empty” truck. Our tech continuously finds compatible loads using the open capacity in your truck.
What sets STL AddOns apart from traditional load-matching tools?
STL AddOns shifts the way carriers think about units of capacity. Instead of just identifying loads for empty trucks, we also surface loads to fill the remaining space on your truck throughout transit.
Increase earnings by 77%
Flock carriers earn an average of 77% more by adding compatible loads to your partial or STL shipments.
Boost truck utilization by 97%
Maximize trailer efficiency with an average 97% increase when using STL AddOns.
Reduce administrative work
45% of carriers spend 5+ hours a week looking for extra shipments to fill partially loaded trailers. Instead, STL AddOns dynamically surfaces matching loads in real-time.
Minimize operational headaches
Flock’s clear operational procedures minimize delays and service interruptions associated with multi-stop loads, keeping your trucks moving.

President of Universe Cargo Group
How to unlock STL AddOns
Just book a partial or Shared Truckload in the Flock Platform. Our technology will automatically find the best loads to fill the remaining space on your trailer and match your route.
We’ll send you an email and Flock Platform notification when you get a matching AddOn load so you can maximize earnings and trailer use.
FAQs
Flock’s STL AddOns technology continuously searches for compatible Flock loads to fill the available space in your trucks. When we find matching AddOn loads, we’ll notify you through email and in-app notifications, so you never miss an earnings opportunity.
STL AddOns is available for any Flock load that doesn’t fill an entire trailer. Whether you booked a partial load or Shared Truckload, this new product unlocks even more ways to fill your trailer and maximize earnings.
STL AddOnsTM is the only product on the market that automatically finds freight to fill the remaining available space in trucks. This distinguishes our approach from traditional reloads that require a full drop-off before reloading.
To unlock STL AddOns, just book a partial or Shared Truckload in the Flock Platform. Our technology will automatically find the best loads to fill the remaining space on your trailer and match your route.
Navigate to the “STL AddOns" tab within the Flock Platform to view all your matching AddOn loads. We’ll send you an email and platform notification when you get a matching AddOn load so you never miss an opportunity.