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Speed bumps for parking garages

Content reviewed 2026-10-20

Short answer

Garage decks are often post-tensioned, so never drill without the structural engineer's approval and a slab scan. Place bumps on flat landings near ramps, stair doors and elevator lobbies, not on ramp break points, and seal every hole the way the membrane contractor specifies.

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Before anyone drills

Ask the owner for the structural drawings and engineer contact.
Confirm whether the deck is post-tensioned or slab on grade.
Scan each anchor location and mark tendons.
Agree how holes are sealed through the traffic membrane.
Get written approval for the locations.

Where to place them

Focus on spots where drivers and walkers meet.

Location	Why	Note
Ramp landings	Drivers accelerate off ramps	Flat area, not the break point
Stair and elevator doors	Pedestrians step out between cars	Pair with marked walkway
Exit lanes	Speeding toward the street	Keep gate detectors clear
Ground level slab on grade	Fewer drilling limits	Still locate utilities

Clearance and lighting

Garages are darker than open lots. Choose a high-visibility yellow and black profile, keep markings fresh and make sure the bump is lit. Check vehicle clearance on ramps before choosing between our 2.4 in and 3 in profiles.

Buying terms

In stock in the USA — LTL freight to all 48 contiguous states.
Purchase orders accepted from companies, 3PLs, HOAs, school districts and cities.
Request volume pricing for your measured scope and delivery requirements.
Anchor hardware and end caps included; 5-year commercial warranty.
Quote with landed freight answered within 24 business hours.

Frequently asked

Can I drill speed bumps into a parking garage deck?

Only after the owner's structural engineer approves it. Many elevated decks are post-tensioned: cutting a tensioned tendon is dangerous and costly. Scan the slab (GPR or similar) before any hole is drilled.

Where do speed bumps help in a garage?

At the bottom and top of ramps, before pedestrian doors, stairs and elevator lobbies, and at exits where drivers speed up toward the street.

Will a speed bump damage the waterproofing membrane?

Drilling through a traffic membrane can let water reach the slab. Ask the engineer or membrane contractor how holes must be sealed, or whether a different location is better.

What about low-clearance vehicles on ramps?

Avoid placing a bump at the break point of a ramp where cars already bottom out. Put it on the flat landing instead.

Sources & standards

Free download

Spec sheet & quote checklist (PDF)

Both profiles, dimensions, documentation requirements and the details needed for a personalized quote.

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