6.4 Shared-Use Parking

Enhance park-and-ride services and subsequent reduced VMT and vehicle trips.

Description

In some urban locations, it may be more cost-efficient for a city to establish park-and-ride service at an existing parking facility. Joint use of parking facilities at shopping malls, theaters, churches, or stadiums can be negotiated with property owners or management companies.

Application

Cities with transit service.

Daily Emission Reduction (grams/day)=N๐‘ƒ๐พร—UPร—(๐‘‡๐ฟWโˆ’๐‘‡๐ฟ๐‘ƒ๐‘…)ร—๐ธ๐นBร—2trips/day\text{Daily Emission Reduction (grams/day)} = N_{\mathit{PK}} \times U_{P} \times (\mathit{TL}_{W} - \mathit{TL}_{\mathit{PR}}) \times \mathit{EF}_{B} \times 2 \ \text{trips/day}

Reduction in running exhaust emissions from reduced VMT resulting from park-and-ride facility use

Variables (Unit) Definitions
๐ธ๐นB\mathit{EF}_{B} (grams/mile) Speed-based running exhaust emission factor before implementation (NOX, VOC, PM, or CO)
N๐‘ƒ๐พN_{\mathit{PK}} Number of parking spaces
๐‘‡๐ฟ๐‘ƒ๐‘…\mathit{TL}_{\mathit{PR}} (mile) Average auto trip length from home to parking facility
๐‘‡๐ฟW\mathit{TL}_{W} (mile) Average auto work trip length
UPU_{P} Parking facility utilization rate (estimate)

Source: Texas A&M Transportation Institute