Commuter parking varies sharply by place, facility, and measurement period. Recent inventories and studies show both underused capacity and lots that fill before the morning peak, while employer-paid parking is associated with more solo driving and longer vehicle travel in some study samples.
Contents: Park-and-ride occupancy · Station access · Downtown supply · Reserved and shared spaces · Prices and search time · Employer-paid parking
Park-and-ride occupancy and capacity
Park-and-ride statistics can look very different depending on the year and the lot. The Washington State Department of Transportation’s Multimodal Mobility Dashboard Central Puget Sound Interstate 405 - Park and rides reports occupancy as a share of available spaces across a group of I-405 Central Puget Sound facilities. These are observed dashboard measurements, not a region-wide estimate.
In 2024, occupancy ranged from 14% to 54% across 11 lots. In 2023, the range was wider, from 8% to 71%, also across 11 lots. The 2022 range was 3% to 45%, and the 2021 range was 1% to 32%, each across 11 lots. In 2020, the dashboard covered 10 lots and reported occupancy from 25% to 43%.
| Measurement year | Lots covered | Occupancy range |
|---|---|---|
| 2024 | 11 | 14%–54% |
| 2023 | 11 | 8%–71% |
| 2022 | 11 | 3%–45% |
| 2021 | 11 | 1%–32% |
| 2020 | 10 | 25%–43% |
The ranges matter more than a single headline percentage. In 2023, for example, the difference between the lowest and highest reported lot occupancy was 63 percentage points. The 2024 spread was 40 percentage points. A commuter choosing among facilities therefore may encounter available capacity at one lot while another is substantially fuller. The dashboard’s geography is specifically the I-405 Central Puget Sound group, so these figures should not be treated as averages for every park-and-ride system.
An earlier Central Puget Sound assessment provides a different picture because it describes an on-site audit rather than the dashboard’s later measurements. The Improvement of Park-and-Ride Facilities and Services in Metropolitan Areas of Tennessee summarized a 2014 audit in which 100% of spaces at 7 of 10 Central Puget Sound park-and-rides were filled before 9 a.m. The same audit found person occupancy of parked vehicles was about 1. Those observations are from the 2014 study period and were summarized in a report published in 2020; they are not a new measurement of current conditions.
Commuter rail station access
The MBTA Station access study examined a typical weekday in 2020 at regional park-and-rides. Driving and parking was the access mode for 68% of riders. Nearly two-thirds of riders who parked drove more than 4 miles to reach the station. This indicates that station parking serves many riders whose access trip is longer than a short local approach.
Even with that reliance on parking, fewer than 75% of car-parking spaces were used at six MBTA regional park-and-rides on the typical weekday studied. The under-75% finding included four of the largest commuter-rail park-and-rides: Route 128, Hingham Ferry Terminal, Anderson/Woburn, and Kingston. In other words, high dependence on driving and parking did not produce full utilization at every large facility in that measurement period.
Walking access was limited at most of the same regional facilities. All but three MBTA regional park-and-rides had walking mode shares below 10%. The result is a station-access pattern in which parking can be a central part of the first-mile connection while walking accounts for a relatively small share.
The earlier Central Puget Sound survey summarized in the Tennessee report also measured willingness to pay for parking. Users were willing to pay an average of $1.50 for general parking. They were willing to pay an average of $1.83 for an ensured parking space. For an ensured space located 10–15 minutes’ walk from the lot, the average stated willingness to pay was $1.53. These are survey findings from the earlier study period, not observed prices collected from a current parking market.
Downtown off-street commuter parking supply
Downtown parking supply is often measured as facilities and spaces rather than as the number of commuters served. Seattle’s 2023 Center City Off-Street Parking Study counted 240 public off-street parking facilities open during the workday in October 2023. The inventory contained 58,760 off-street spaces.
The study’s district-level counts show how uneven that supply can be. The Financial district had 8,222 spaces across 22 facilities. The Retail district had 12,522 spaces across 32 facilities. Denny Triangle North had 7,370 spaces across 24 facilities, while Denny Triangle South had 2,154 spaces across 8 facilities.
Other reported areas included 3,113 spaces across 21 facilities in Belltown North and 3,279 across 27 facilities in Belltown South. The Waterfront had 2,003 spaces across 8 facilities. Chinatown/International District had 1,500 spaces across 17 facilities. Pioneer Square Core had 1,014 spaces across 5 facilities.
These counts describe public facilities open during the workday. They do not represent all commuter parking, all private employee parking, or the number of spaces available at every moment. They also do not show that every listed space was available to every commuter, because facility rules, reservations, prices, and operating conditions can differ.
Reserved, accessible and shared spaces
The same October 2023 Seattle inventory separates several types of spaces from the overall total. It counted 708 EV charging spaces, equal to 1.2% of all 58,760 spaces, and 1,324 disabled spaces, equal to 2.3%. It also counted 328 carpool spaces and 270 vanpool spaces.
Reserved spaces totaled 4,189, or 7.1% of the inventory. The district shares varied considerably. Financial-district facilities had 923 reserved spaces, or 11.2% of their 8,222 spaces. Waterfront facilities had 317 reserved spaces, or 15.8% of 2,003. Chinatown/International District facilities had 353 reserved spaces, or 23.5% of 1,500.
Shared-ride supply also differed by district. South Lake Union facilities had 79 carpool spaces, equal to 1.1% of their 7,092-space inventory, and 152 vanpool spaces, equal to 2.1%. These categories are not interchangeable with general spaces: a total facility count can look ample while the number of spaces meeting a particular commuter’s needs is smaller.
For commuters, the practical question is therefore not only how many spaces exist. It is whether the space is general, reserved, accessible, EV-equipped, carpool-designated, or vanpool-designated, and whether its location and rules fit the trip. The Seattle figures provide an inventory snapshot for October 2023, not a utilization rate for each category.
Parking prices, availability and search time
Pricing can affect how efficiently available curb space is used. The U.S. Department of Transportation’s Implementation of Demand-Based Pricing to Washington D.C. Street Parking Resulted in an Increase of 10 Percent of Parking Usage and a Decrease in the Time To Find Parking of Seven Minutes reports findings from a Washington, D.C. pilot. The pilot used $2.30 per hour as the city’s average parking-cost baseline.
In the pilot, street-parking usage matching demand to supply increased 10%. Low-demand parking occupancy increased 12%, and length of stay on low-demand blocks increased 14%. Total time to find an available parking spot fell by 7 minutes. The findings are pilot results, with findings published in 2023 and the source publication dated 2019; they should not be generalized to every parking market.
The same source reports that, in Seattle’s October 2023 paid-parking rate update, about half of location/time combinations were priced at $2.50 or less per hour. Seattle used more than 85% curb occupancy as the signal for challenging parking availability in that rate update. A curb-occupancy threshold and an hourly price are different measures: one describes use relative to supply, while the other describes the posted rate.
FHWA’s An Assessment of the Expected Impacts of City-Level Parking Cash-Out and Commuter Benefits Ordinances – Executive Summary reported 2020 baseline monthly parking-pass prices of $655 for a New York City central business district and $138 for San Diego. Those are city-specific baseline figures, not a national average.
Employer-paid parking and commuter behavior
Parking benefits can change the relative cost of driving and transit. In FHWA’s 2020 baseline estimates, 66% of Washington, D.C. commuters already received transit benefits. FHWA estimated the remaining value after pre-tax transit benefits at about $60 per month for the affected Washington, D.C. population. For commuters receiving free parking without existing transit benefits, the modeled full transit-commute benefit was about $150 per month. These are modeled baseline estimates, not direct observations of every commuter’s behavior.
FHWA also modeled citywide scenarios. Its Scenario 1 monthly cash-out model estimated a 10% reduction in daily commute vehicle-miles traveled for Boston/Cambridge and a 13% reduction for Philadelphia. Its Scenario 5 model estimated a 36% reduction for Chicago. These are forecasts or estimates from modeled scenarios, not measured post-policy outcomes.
The COMMUTING, CONGESTION, AND POLLUTION: THE EMPLOYER-PAID PARKING CONNECTION reported findings from a 2005 downtown Los Angeles office-worker study. Employer-paid parking was associated with a 44% increase in solo drivers in the sample. Commuters who paid to park occupied 0.56 parking spaces per employee, compared with 0.75 for employees who parked free. The study reported a 34% increase in parking demand when employers paid for parking.
The Los Angeles study used an average commuter-parking price of $83.82 per month. It estimated annual parking costs of $563 per employee when commuters paid, compared with $750 when employers paid. Average commute travel was 18.1 vehicle-miles per day for employees who paid to park and 24.1 vehicle-miles for employees with employer-paid parking. The study attributed an additional 6 vehicle-miles per employee per day to employer-paid parking. Because this was a 2005 study of a specific office-worker sample, its associations should not be read as a current universal effect.
More recent survey evidence comes from Is Parking Cash-Out Worth It? Comparing Cost-Effectiveness and Climate and Equity Benefits in the Bay Area and South Coast Air Quality Management Districts. In a 2024 Bay Area and Los Angeles County cash-out survey, 76.9% of 963 employees said they would accept cash-out if offered. The study estimated 5.6 million vehicle-miles traveled related to covered employees in the Bay Area and 5.7 million in Los Angeles County. Those are survey and study estimates for the stated locations and period, not a national total.
Taken together, the evidence describes several different parking questions: whether a lot has space, whether a station is reachable without driving, how much downtown supply is designated for specific users, how quickly a driver can find a space, and how employer benefits relate to travel. The measurement period and geography are essential when comparing any two commuter parking statistics.