Speed Bumps for Distribution Centers and Plant Yards: 2.4 in vs 3 in by Traffic Type
Yards mix trailers, cars, pedestrians and lift trucks. The profile you choose should match the speed you want at each point, not one height for the whole site.
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TL;DR: Use the 2.4 in profile where you want traffic to slow to about 10 mph (main yard lanes, employee parking aisles) and the 3 in profile where you want about 5 mph (pedestrian crossings, building entrances, loading zones). Keep bumps off routes that forklifts must cross under load. Plan by zone, standardize per site, and roll out the same layout across every location. LT Plastics, an authorized Bonar Plastics distributor based in Phoenix, AZ, supplies HDPE bulk containers and speed bumps to US plants and distribution centers.
Quick Facts
| Zone | Target speed | Profile | Note |
|---|---|---|---|
| Main yard lanes | About 10 mph | 2.4 in | Comfortable for trucks at controlled speed |
| Employee parking aisles | About 10 mph | 2.4 in | Space evenly along long aisles |
| Pedestrian crossings | About 5 mph | 3 in | Mark the crossing; add signs |
| Dock approaches and gates | About 5 mph | 3 in | Leave clear turning room for trailers |
| Forklift cross routes | Avoid bumps | None | Use signs, mirrors or marked lanes |
Why One Height Does Not Fit a Yard
A distribution center yard carries tractor-trailers, box trucks, cars, pedestrians and sometimes lift trucks. A single tall bump everywhere slows trucks too much in lanes and invites drivers to drive around it. Matching the profile to the zone keeps compliance higher. OSHA requires that permanent aisles and passageways be kept clear and marked where mechanical handling equipment is used (29 CFR 1910.176(a)), so pair bumps with markings and signs.
How to Plan a Site
See speed bump height and spacing and speed bumps on forklift routes.
Multi-Site Rollout
Use the same zone rules at every site so drivers who move between locations see the same layout. Collect a site sketch and linear feet per zone from each location, then order per site. Our multi-site speed bump rollout guide explains how to keep it consistent.
What We Know That Buyers Often Miss
Next Step
Send the number of sites, zones and linear feet per zone in the volume quote form below. We will quote 2.4 in and 3 in profiles per site.
FAQ
Is a 3 inch speed bump too high for trucks?
It is meant for slow zones of about 5 mph, such as crossings and gates. Use 2.4 in where trucks keep moving.
Do speed bumps need signs?
Signs and markings make them visible and reduce damage and complaints. Follow your site safety plan.
Can forklifts drive over speed bumps?
Avoid it, especially under load. Plan forklift routes without bumps.
Sources
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Part of the topic guide
Speed Bumps for Parking Lots, Truck Yards and Loading Docks