Getting to Right-Sized

ParkingInnovative Approaches to the Traditional Supply/ Demand Mentality

What is Right Sized Parking?• Predicting parking needs based on

actual data about a site or community, rather than using predictive generation characteristics.

• Studies have shown that the old methods:– Increase vehicle ownership– Increase vehicle miles traveled– Increase congestion– Increase housing costs

What Are The Consequences?

Who Says How Much?

City/County Parking Ordinances

• Apply generic land use parking ratios

• Broad category types

• Based on approximations or what other communities are doing

National Industry Standards• Apply generic land

use parking ratios• Generic category

types are applied as “one-size-fits-all”

• Based on limited research from suburban developments

Introducing Shared Parking• Finally starting to

realize parking is a system

• Multiple land uses and users can utilize shared pool of spaces

• Still relies heavily on generic industry land use standards

Can We Go Further?Why do we continue to treat these uses/users the same?

Can We Go Further?Why do we continue to treat these uses/users the same?

We need methods that allow us to predict parking demands for our actual uses and users, with variations for location, relationship, and context within our communities.

We need methods that allow us to predict parking demands for our actual uses and users, with variations for location, relationship, and context within our communities.

Traditional Supply/Demand

A New Approach

Let’s Look At An Example

• 300 room hotel• 30,000 sf retail• 20,000 sf

restaurant• How much parking

do we need?

The Traditional ApproachPeak Hour

SpacesUse Size Rate Factor RequiredHotel 300 1.15 0.9

311Retail 30,000 3.6 0.8 87Restaurant 20,000 18 1.0 360

The total parking demand is:758 spaces

The Park+ Approach

The Park+ ApproachPeak Hour

SpacesUse Size Rate Factor RequiredHotel 300 0.5 -

150Retail 30,000 0.8 -

24Restaurant 20,000 6.4 -

128

The total parking demand is:302 spaces

Savings of 456 spaces

The Park+ Approach

“IT'S HARD TO BUILD A COMMUNITY AROUND PARKING LOTS AND SUBDIVISIONS.”

- ED MCMAHON

Brett Wood, P.E.Kimley-Horn and Associates, Inc.brett.wood@kimley-horn.com602-906-1144