speed bump spacing, how far apart should speed bumps be, speed bump placement, how many speed bumps do i need, speed bump installation layout

Guide · Layout

How far apart should speed bumps be?

Short answer

Place speed bumps 150–250 ft apart in parking lots and short drive aisles, and 250–500 ft apart on longer private roads. Keep every bump at least 25 ft clear of stop bars, crosswalks and turns, and run it the full lane width so nobody steers around it. To size a project: aisle length ÷ 200 ft, rounded up, plus one at the entrance.

Drive aisle at a corporate campus with speed bumps spaced along the lane

Spacing by setting

Closer spacing on shorter runs; the goal is to remove the room to accelerate.

Setting	Spacing	Target speed	Notes
Parking lot drive aisle	150–200 ft	≤ 10 mph	One at each entrance
Apartment / HOA drive	150–250 ft	≤ 10 mph	Add one before amenity crossings
School pickup lane	150 ft	≤ 10 mph	Never inside the crossing
Private road	250–500 ft	10–15 mph	Sign each approach
Truck yard / dock approach	75–150 ft before apron	≤ 6 mph	2.4 in profile only

Ranges follow standard US traffic-calming practice for private property; public streets follow the city's own standard.

Sizing the order

lanes needed = (aisle length ÷ 200 ft, rounded up) + 1 entrance crossing

Then price it: $260–$520 per 12 ft lane for the 3 in modular profile, $360–$660 for the 2.4 in heavy-duty profile, materials with anchors included, plus LTL freight to your ZIP.

Placement rules that prevent claims

Full lane width, 25 ft clear of stop bars and turns, off accessible routes and fire-lane clear width, reflective bands facing traffic, and MUTCD W17-1 signage 100–200 ft ahead of each device. That combination is what an insurer reads as a good-faith effort.

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.
Pallet and container pricing past about 10 lanes.
Anchor hardware and end caps included; 5-year commercial warranty.
Quote with landed freight answered within 24 business hours.

Frequently asked

How far apart should speed bumps be?

150 to 250 feet apart in parking lots and short drive aisles, and 250 to 500 feet on longer private roads per standard traffic-calming practice. Any farther and drivers accelerate hard between them, which is worse than no bump at all.

How many speed bumps do I need?

Divide the length of each drive aisle by 200 ft and round up, then add one at the entrance. A 600 ft aisle takes three crossings. At $260–$520 per 12 ft lane in materials, that sizes the budget in one line.

Where should you not put a speed bump?

Within 25 ft of a stop bar, crosswalk or turn; inside a curve; on a grade steeper than about 8%; across a marked accessible route; in a loading dock backing area; or over a drainage line or utility trench.

How far from the entrance should the first bump go?

At least 25 ft past the entrance so a turning vehicle is straight and settled before it crosses, and where an approaching driver can see it from the street.

Do speed bumps need to run the full lane width?

Yes on private property. A partial-width bump invites drivers to steer around it, which pushes them toward curbs and pedestrians. Modular kits build to any width from 39 in and 20 in modules plus two 10 in end caps.

What about drainage?

Leave a gap at the gutter line or place the run where sheet flow crosses, and never bolt a bump across a trench drain. Modular sections make it easy to leave a deliberate drainage gap at one end.

Free download

Spec sheet & price guide (PDF)

Both profiles, dimensions, load rating, price per 12 ft lane and what we need to quote freight. One field — no phone call required.

Request pricing

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Prefer to talk it through? Open the full quote form.

How far apart should speed bumps be?

Spacing by setting

Sizing the order

Placement rules that prevent claims

Buying terms

Frequently asked

How far apart should speed bumps be?

How many speed bumps do I need?

Where should you not put a speed bump?

How far from the entrance should the first bump go?

Do speed bumps need to run the full lane width?

What about drainage?

Spec sheet & price guide (PDF)

Get your landed price in 24 hours

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