Research · Parking pressure screening

Where is truck parking under the most pressure?

A practical screening tool for states, MPOs, and corridor studies to identify where field checks and parking improvements should begin.

Accepted for TRB 2027 presentation · National coverage · State · MPO · Corridor

Key takeaways

Find where to look first

  • Start with the full networkFind the locations where parking pressure deserves a closer look.
  • The busiest highway is not always the biggest parking problemSome busy corridors have enough parking. Others do not.
  • Get a priority listFocus field checks and parking studies where they are most needed.
65,372

Screening cells covering the 48 contiguous states.

6,294

Cells with at least one identified truck parking facility.

1,357

Parking-pressure locations flagged for additional review.

National truck parking pressure screening map across the contiguous United States
National truck parking pressure screen. Flagged cells are where truck traffic and parking use suggest existing supply may be under pressure.

What the screen tells you

A simple way to find where to look first

The screen highlights locations where truck traffic and parking use suggest existing supply may be under pressure.

Traffic alone is not enough

A busy corridor may already have enough parking.

Parking use matters

Heavily used locations deserve a closer look.

Amenities matter

Food service is strongly associated with where parking activity concentrates.

Process

From statewide map to field action

01

Screen the area

Identify the corridors and locations that stand out.

02

Verify priority locations

Check ramps, shoulders, nearby streets, rest areas, and truck stops.

03

Choose the response

Evaluate added capacity, operational changes, parking information, or further site study.

Next step

A location is flagged. What next?

  • Confirm the problemCheck for overflow on ramps, shoulders, streets, or nearby properties.
  • Check existing facilitiesDetermine whether they are full, difficult to access, or poorly configured.
  • Evaluate optionsConsider expansion, new spaces, operational improvements, or better parking information.

Limits

What the map does not tell you

  • A screening tool, not a final space countA flagged location does not tell you exactly how many spaces are needed.
  • Local verification is still neededField observations and local data should confirm conditions at specific locations.
  • Data confidence variesSome locations have more direct observations than others.

Deliverables

What a state, MPO, or corridor analysis can deliver

  • Truck parking pressure mapFor a state, MPO, region, or corridor.
  • Ranked locationsFor field verification.
  • Interstate and freight-corridor summariesFor planning and project screening.

Start with where to look

Parking pressure screening identifies where to investigate first, so detailed field work can focus on the locations that matter most.

Related

Authored, reviewed, and approved by Troy Choi, Ph.D., P.E. Transportation Systems Optimization and Engineering Research.