A driveway speed bump is a 3-to-4-foot rubber or plastic unit, 2.5 to 3 inches tall, anchored to a residential driveway to slow visiting or tenant traffic to about 5 mph. The unit runs $40 to $250 in Oregon. Self-install adds $0 to $200 in tools and hardware. The most common spots for one: at the apron where a driveway meets a sidewalk, on shared duplex or triplex driveways, and on long rural driveways where guests treat it like a road.
Below: product picks, HOA approval, talking to your neighbors, and the install steps for a residential driveway. Commercial parking-lot installs are different — see What Are Speed Bumps? Complete 2026 Buyer's Guide.
When does a driveway need a speed bump?
A residential driveway needs a speed bump when one of three things is true:
- A child or pet has been struck or nearly struck by a vehicle entering or exiting
- A driveway is shared by multiple households and at least one driver routinely exceeds 10 mph
- A long rural driveway ends at a dwelling where guests, delivery drivers, or short-term-rental visitors fail to slow at the approach
The National Highway Traffic Safety Administration reports that back-over crashes in residential driveways kill an average of 50 children per year in the United States, with most fatalities involving children under five. A 3-inch driveway speed bump installed 10 feet from the garage door forces drivers entering and exiting to look at the device, which is the same forced-attention mechanism that makes parking-lot bumps effective.
What is the right size speed bump for a driveway?
The standard residential driveway speed bump is 3 feet long, 9 to 12 inches wide, and 2.5 to 3 inches tall. This is shorter and slightly less aggressive than a commercial parking-lot bump. The reason is mass: a residential sedan crossing a 3-inch bump at 5 mph experiences only a fraction of the suspension load that a 6,000-pound forklift produces in a warehouse aisle, so the bump can be smaller and still slow the driver.
| Driveway type | Recommended bump | Length | Height |
|---|---|---|---|
| Single-family driveway | 1 modular section | 3 ft | 2.5 to 3 in |
| Shared duplex driveway | 1 to 2 sections | 3 to 6 ft | 3 in |
| Long rural driveway (over 200 ft) | 2 sections at the approach | 6 ft | 3 in |
| Apartment-complex driveway approach | Commercial-grade bump | 8 to 12 ft | 3 to 4 in |
Do I need permission to install a speed bump on my driveway?
The answer depends on three jurisdictions: the city, the HOA, and the property line.
City permits
In Oregon, a private driveway on private property does not require a city permit for a residential speed bump. The Oregon Department of Transportation has authority over public roadways, not private driveways. Local building codes (Salem Chapter 79, Portland Title 33.266) regulate the driveway apron -- the section between the property line and the public sidewalk -- but a speed bump installed entirely on private property after the apron is unregulated.
If you live in a Portland Title 33.266 zone or a similar regulated jurisdiction and you want to install a bump within five feet of the public sidewalk, call the city's Bureau of Development Services first. Oregon Revised Statute ORS 811.555 governs obstructions on public ways, and a bump that crosses into the right-of-way is a violation.
HOA approval
Most planned-community CC&Rs in Oregon require prior board approval before any modification visible from a common area or another lot. ORS Chapter 94 (planned communities) and ORS Chapter 100 (condominiums) give HOAs broad authority to require architectural-review approval for driveway alterations. Submit a written request that includes:
- Product photo and dimensions
- Installation location (sketch with measurements from property line)
- Material (rubber, plastic, asphalt)
- Color (if the HOA has a palette restriction)
- Marking plan (typically yellow-and-black chevron)
For HOA-board approval templates, see speed bumps for HOA communities.
Neighbor coordination
For a shared driveway, the law in Oregon treats the driveway as an easement. Both households have a use right and either can typically install a speed bump on the section closest to their dwelling, but doing so without coordination is a fast way to start a property dispute. Send a written notice to the other household at least 30 days before install with the same five-element disclosure used for HOAs.
Which speed bump should I buy for my driveway?
Three product categories work for residential driveways:
1. Modular rubber (recommended)
Recycled-rubber sections, 3 to 6 feet long, anchor with concrete or asphalt anchors. Lifespan: 5 to 7 years on a typical Oregon driveway. Unit cost: $60 to $200. The most-installed driveway product Cojo recommends. Removable for snow plowing, repairs, and seasonal storage.
2. HDPE plastic
Lightweight, $40 to $90 per unit. Snaps in cold weather and degrades under UV exposure. Lifespan: 1 to 3 years in Oregon climate. Best for renters who do not want a permanent install or for short-term-rental driveways where the owner wants reversibility.
3. Cast-in-place asphalt
Permanent, low-profile, integrates with the driveway surface. Lifespan: 7 to 10 years. Cost: $300 to $1,000 installed by a paving crew. Recommended for long rural driveways and for owners who want the bump to read as part of the driveway, not as an aftermarket addition.
For a side-by-side cost comparison, see speed bump cost guide.
How do I install a residential speed bump on a driveway?
A modular rubber driveway speed bump installs in 45 to 90 minutes with these tools:
- Hammer drill with a 3/8-inch concrete bit (or 1/2-inch for asphalt)
- Concrete or asphalt anchor hardware (included with most kits)
- Socket wrench or impact driver
- Tape measure and chalk
- Level
Step-by-step process
- Mark the location. Position the bump at least 6 inches inside the property line and at least 10 feet from the garage door so vehicles fully cross before stopping.
- Confirm the surface is sound. Asphalt with surface cracks under 1/4 inch is acceptable. Concrete that is spalled or cracked must be patched first.
- Lay the bump flat and mark the anchor holes through the bump's pre-drilled holes onto the pavement.
- Move the bump aside and drill anchor holes per the manufacturer's depth spec (typically 2.5 to 3.5 inches).
- Vacuum or blow the holes clean -- debris in the hole reduces anchor pull-out resistance by up to 60 percent according to anchor-manufacturer field tests.
- Reposition the bump and drive the anchors through the bump into the holes. Torque to spec.
- Verify all anchors are flush and the bump sits level on the pavement.
For a longer install with two or more sections, see how to install rubber speed bumps.
How should a driveway speed bump be marked?
Even on a private driveway, a speed bump should be visible. The Institute of Transportation Engineers Traffic Calming Manual recommends three visibility elements:
- Yellow-and-black chevron pattern across the bump face (most rubber bumps come pre-molded with this)
- Reflective tape at both ends for headlight visibility at night
- A small "Bump" sign at the driveway entrance for guest awareness
Cojo installed a 3-foot rubber bump on a Bend long-driveway short-term rental in March 2026; pre-install, guest review comments mentioned vehicle damage from a steep apron transition. Post-install with chevron and reflective markers, the driveway-related comments stopped within 30 days.
What does a driveway speed bump cost?
Industry Baseline Range for residential driveway speed-bump products and installation:
| Item | Industry Baseline Range |
|---|---|
| HDPE plastic bump (3 ft, single unit) | $40 to $90 |
| Recycled-rubber bump (3 to 6 ft, single unit) | $60 to $250 |
| Asphalt bump (cast-in-place, installed) | $300 to $1,000+ |
| DIY install hardware (anchors, drill bit) | $20 to $60 |
| Professional install (rubber, single unit) | $150 to $400 |
Current Market Reality
Material costs for recycled-rubber sections rose 8 to 12 percent in 2025 because of feedstock-tire-rubber shortages. 2026 driveway product pricing in the Willamette Valley reflects the new floor.
If you live along the I-5 corridor and want a professional install, contact Cojo for a quote.