Traffic evidence supports a car wash sale when it connects the relevant road segment to the actual customer entrance. Record the source and year, verify legal and practical access, observe queue capacity and distinguish proposed projects from current conditions. Passing vehicles are not customers.
In this guide
Know what the traffic count measures
A road count describes vehicles passing a point over a defined period. It is not a list of unique drivers, households or likely wash customers. TxDOT offers daily, hourly, directional and historical resources, while Caltrans, FDOT and other transportation agencies provide road-specific datasets and tools.
Save the station identifier, road segment, count year, direction where available and whether the figure is observed or estimated. Confirm that the station relates to the driveway approach. A nearby freeway, divided highway or intersection may describe different movements from the traffic that can conveniently enter the site.
Reference for this section: TxDOT: traffic count maps and STARS II · Caltrans: Traffic Census Program · FDOT: traffic and planning applications
What does a 24,000 AADT figure actually tell you?
Annual average daily traffic, or AADT, describes average daily vehicle volume over a year at the reported road location. A short count may be adjusted to estimate that annual figure. Record the agency’s measure and method; a two-day observation and an annualized count are not interchangeable.
Illustrative example: a report shows 24,000 AADT in both directions on the road outside a wash. That does not mean 24,000 distinct potential customers, 12,000 easy right-turn approaches or a predictable number of paid washes. Repeat trips, direction, median controls, opening hours and the actual entrance all matter. Do not simply halve the figure when directional data is missing.
If the source instead reports one direction, ramps, a nearby interstate or an older station beyond a major intersection, state that scope. Obtain the relevant segment and access evidence before using the number in a sale presentation. Keep count year and access-check date separate so a new road layout is not hidden behind an older traffic total.
Reference for this section: FHWA: Traffic Monitoring Guide glossary (2022 edition) · TxDOT: traffic count maps and STARS II
Check the documents and the actual driving route
Separate physical visibility from access rights. A sign can be visible to thousands of vehicles whose drivers cannot make a convenient turn. Review the approved driveway, median openings, easements and lease rights with the appropriate professional. FDOT's access-management resources illustrate why connection permits and traffic data are separate questions.
Visit the site from each meaningful approach direction. Record signals, one-way segments, U-turn routes and conflicts with neighboring uses. If customers rely on a neighboring driveway, obtain the written access arrangement. A practice tolerated by a neighbor is not necessarily a right that will continue after a sale.
Reference for this section: FDOT: access management
Observe the queue rather than quoting tunnel capacity
A machine's stated capacity does not establish the site's usable throughput. Pay-station speed, vehicle preparation, staffing, equipment downtime, stacking space and exit conflicts all matter. Observe the busiest actual operating periods and record date, conditions and approximate queue length.
Use observations to identify a question for the appropriate traffic or site professional, not to invent an engineering conclusion. Check whether the proposed buyer plan changes circulation, service time or site layout. Distinguish an existing permission from an improvement that needs a new review.
Scroll sideways to compare columns. You can also focus the table and use the arrow keys.
| Item | Record | Buyer question |
|---|---|---|
| Count | Agency, station, segment and year | Does this describe the actual approach? |
| Access | Permit, easement and turning route | Can the proposed owner retain this route? |
| Queue | Dated observations and approved site plan | What limits usable capacity? |
| Projects | Agency record, scope and current status | Is the effect temporary, permanent or unapproved? |
Build a usable entrance and queue record
- Map customer approaches from each travel direction, permitted turns, shared drives and the exit. Mark uncertain rights for document review.
- Record observations on identified days and times, including the weather, staffing, active equipment and any unusual promotion.
- Note where the queue ends, whether it blocks parking or another use, and how customers leave. A photograph of a busy hour is evidence of that hour only.
- Reconcile the observed layout to permits, easements and lease exhibits. Ask the appropriate road authority or qualified engineer about disputed access or capacity.
A proposed median change needs a separate entry: project identifier, current stage, dated source, proposed effect and the next confirmation needed. Planning, funding, final design and construction are different states. An owner should not promise that a turn will remain available, or that a proposed improvement will deliver additional wash sales.
Reference for this section: FDOT: access management · TxDOT: statewide planning map
Keep development proposals separate from current demand
Planning maps and agency project pages can identify upcoming work. TxDOT explicitly cautions that its planning map is not an on-the-ground survey and that road features can change. Obtain the current record and review how the specific project relates to the property.
A housing application, approved retail project, building under construction and occupied development are different stages. Keep those labels and dates in the file. Do not multiply a proposed trip estimate by an invented wash-conversion rate to present future earnings as established fact.
Reference for this section: TxDOT: statewide planning map
Use the evidence in the sale conversation
Combine the access file with actual transactions and customer behavior, using aggregated data when confidentiality matters. If sales weakened during roadwork, show the full period and other changes that occurred at the same time. If a median change is unresolved, explain the current status and the steps being taken to obtain clarity.
The strongest location story is one a buyer can reproduce from the documents and a site visit. It supports a discussion of operating performance and risk without promising that a road count will convert into a particular price or volume of washes.
Sources and scope
These references support the specific topics described below. Recorded source-check dates are shown where available. Our checklists and examples are educational analysis, not transaction or professional opinions.
- TxDOT: traffic count maps and STARS II
Traffic counts and access to daily, hourly, directional and historical traffic information; not a measure of car wash customers.
Source checked
- Caltrans: Traffic Census Program
State-highway traffic, ramp and peak-hour reports. City-street and driveway evidence require the relevant local source.
Source checked
- FDOT: traffic and planning applications
Access to Florida Traffic Online and active construction resources. Use the dated station and road segment relevant to the property.
Source checked
- FDOT: access management
State highway connection permits, access classification and median-opening resources; a traffic count does not grant driveway access.
Source checked
- TxDOT: statewide planning map
Planning layers including projects and traffic; approximate mapping is not a survey or confirmation of property rights.
Source checked
- FHWA: Traffic Monitoring Guide glossary (2022 edition)
Definitions of traffic measures, including AADT and adjustment of short-period counts. Road volume does not establish driveway rights, unique customers or wash sales.
Source checked
This guide provides general education. Your documents, jurisdiction and circumstances determine the advice you need. Figures labelled illustrative are examples, not reported transactions or market benchmarks.