Quick Verdict
Speed hump markings are the painted chevrons, bars, and warning legends that tell drivers a hump or table is ahead so they slow before they hit it. On private roads and lots, the standard treatment is a set of white or yellow triangle/chevron markings on the hump face plus a "BUMP" or "HUMP" legend and often advance warning. Good traffic-calming marking is about visibility: the pattern has to read clearly day and night, in Oregon rain, and after months of tire wear. This guide covers the common patterns, materials, and where each fits. Speed hump markings only work if they are placed, sized, and maintained to a recognized standard.
What are speed hump markings?
Speed hump markings are the high-contrast patterns applied to and around a raised traffic-calming device. Their job is simple: make the hump impossible to miss and give the driver time to slow down. A hump that blends into the pavement is a liability, especially at night or in the rain, so the marking is as important as the hump itself.
Most installations combine several elements: chevron or triangle markings on the ramp faces, a stop-bar or transverse line, an advance warning legend on the approach, and sometimes edge striping to define the device width. On private roads and facility drive lanes, these markings follow the same visual logic as public roads even when public code does not strictly apply. For the full context on road marking, see our pillar on road striping and line painting in Oregon.
Common traffic-calming marking patterns
Different calming devices call for different markings. Here are the patterns you will see most often:
- Chevron / triangle markings: White or yellow triangles painted on the hump face, pointing in the direction of approach, so the raised surface is obvious from a distance.
- Transverse bars: A series of white bars across the lane that create a visual (and sometimes audible) narrowing effect, prompting drivers to slow.
- Advance warning legend: "BUMP," "HUMP," or "SLOW" painted on the approach, often with a warning triangle.
- Speed table markings: Longer flat-topped tables get edge lines plus crosswalk markings when they double as a raised pedestrian crossing.
- Chevron warning arrays: Nested chevrons at curves or chicanes that guide the eye through the calming feature.
Color matters. On most private roads, white is standard for the device markings, with yellow reserved where a marking separates opposing traffic or flags a specific hazard. Keep the scheme consistent across a site so drivers learn to read it.
Marking specs and standards
Traffic-calming markings on public Oregon roads follow MUTCD guidance as adopted by ODOT, and ODOT pavement-marking spec 00850 governs materials and placement on state work. Private roads are not bound by the same permitting, but following the same standards is smart: it keeps markings legible, defensible, and familiar to drivers.
| Element | Typical spec | Notes |
|---|---|---|
| Chevron/triangle marking | White, sized to hump width | High contrast, both ramp faces |
| Advance warning legend | White "BUMP"/"HUMP" | Placed before the device |
| Line width | 4-inch to 8-inch typical | Wider reads better at speed |
| Retroreflectivity | Glass beads required | Critical for wet night visibility |
| Material | Paint or thermoplastic | Thermoplastic for durability |
What do speed hump markings cost?
Industry Baseline Range: a set of chevron/hump markings and an advance legend typically prices out of per-item and per-foot rates. Arrows and legends (paint) run about $15 -- $60+ each, thermoplastic legends about $50 -- $150+ each, and any short striping run carries a $350 -- $1,000+ minimum callout plus a $150 -- $600+ mobilization fee.
These are industry baseline ranges for planning only -- actual pricing depends on surface condition, layout complexity, material (paint vs thermoplastic), line footage, night/traffic-control needs, and current market conditions. Get a site-specific quote.
Current Market Reality
Traffic-calming jobs are marking-heavy: multiple chevrons, legends, and crossings add up quickly compared to a plain centerline. If the road stays open during work, traffic control and flagging raise the cost. Thermoplastic runs 2-4x paint but holds its shape and reflectivity for years, which matters on a hump face that takes constant tire contact. Frame it as lifecycle cost.
Maintaining calming markings in Oregon
Speed hump markings live in the worst spot on the road: right where every tire rolls over them. That means they wear faster than straight-line striping and need a maintenance plan. Inspect them each spring after the wet season and studded-tire wear, and re-mark before the pattern fades below the point where a driver reads it at speed. Restripe calming markings whenever you sealcoat or overlay the surrounding pavement, since the new surface buries the old pattern. Thermoplastic is worth the premium here because the layer survives the abuse far longer than paint.
Placement and spacing of the markings
Where you put speed hump markings is as important as the pattern itself. The whole point is to give a driver enough warning to slow before reaching the device, so advance markings and the hump-face pattern need correct placement and spacing.
Advance warning, a "BUMP" or "HUMP" legend, sometimes with a warning triangle, should sit far enough ahead that a driver reading it at the road's speed has time to brake smoothly. Too close and the warning is useless; too far and it loses its connection to the device. On a series of humps, consistent spacing and repeated markings train drivers to expect them.
The chevron or triangle markings on the hump face should span the full width of the device so it reads as a continuous obstacle, not a partial one. On speed tables that double as raised crosswalks, the markings combine calming chevrons with crosswalk bars, and pedestrian visibility takes priority. At chicanes or curves, nested chevrons guide the eye through the feature.
Sightlines drive placement decisions. A hump hidden just over a crest or around a blind curve is dangerous without strong advance warning, so those spots get extra markings. On private roads, where you control the whole layout, you can place calming markings exactly where complaints or traffic data show speeding happens, near a clubhouse, a bus stop, or a busy crossing. Thoughtful placement turns markings from decoration into an actual speed-management tool.
The Bottom Line
Speed hump markings turn a raised device into a clear, readable warning, and that only works when the pattern, color, and retroreflectivity meet a recognized standard and get maintained. Match the material to the traffic and keep the scheme consistent across your site. Cojo is CCB licensed and insured, Hood River based, and marks roads statewide across Oregon and the I-5 corridor. Explore our striping services or request a free estimate.