What is road performance? This is a way of giving your roads a grade for how well they perform. Here are a few examples: 1) are they safe?, 2) did the costs outweigh the benefits to users?, 3) do they get people to where they want to go?, 4) do they promote economic development by connecting between and within cities?, and 5) does road design encourage driving speed that match posted limits?
The Coalition recently submitted a host of performance standard recommendations to SCDOT as part of their Multi Modal Transportation Plan. We loved that we had the opportunity to do so, and it's not over 'til it's over. As a stakeholder, we have until the end of this summer to work with SCDOT in providing this input.
Here is what we recently submitted regarding recommended SCDOT performance standards:
PCC recommendations
for the
SCDOT
Intermodal Transportation Plan
Performance Measures
·
Safety.
Primary: Increased ridership, with data collected by pneumatic tubes
sensitive to bikes and cars.
Secondary: Decreased injuries and
fatalities, only as relative to ridership.
o
Note: Fatalities/injuries spike just after
facilities are added, but only because ridership greatly increases. Without measuring ridership, the actual
safety ratio measure (fatality/injury per rider) cannot be measured, and higher
fatalities/injuries will inaccurately lead the reviewer to think facilities
create unsafe conditions. Only by
measuring both ridership and fatalities/injuries can a safety measure be
valid.
·
Safety funding (Highway Safety Improvement
Program (HSIP) funding): Spend X amount
on bike/ped infrastructure each year that matches the X% of bike/ped fatalities
the previous year.
·
Safety per person, not
vehicle: Evaluate crash rates per capita,
not per vehicle mile. Not doing this
will place bias on those owning automobiles, and will trend safety performance
on the vehicle, not the person driving it.
·
Improvements
to health indicators (hospital
visits with asthma, heart attack, or Type II diabetes as primary diagnosis)
·
Mode shift towards more equal use of all
modes (bike/ped/auto). High performance
= High # miles of established, safe alternatives.
·
Cost Effectiveness Ratio, ie. Transportation $ spent per
mile / customer served
·
Ratio of
average motorist speed vs. posted
speed limit (road design having positive influence on driving behavior). High performance = 1.
·
Number of
exemptions from this policy approved.
High performance = 0.
·
Level of
Service
o
BLOS:
Listed in order of importance.
§ High # linear miles of rail/trail
and bike lanes per square mile.
§ # bike parking spaces per square
mile, only including those located at high density non-residential areas
§ High Connectivity of Existing
Bicycle Network (not linear miles, but instead a GIS function)
§ existence of bike holsters on
transit busses
§ Cost effectiveness ratio = #
residents and office workers / linear miles of bike lanes or rail-trails
o
PLOS:
Listed in order of importance.
§ High # linear miles of sidewalks
per square mile.
§ Sidewalks in close proximity to
Public Facilities/School
§ Sidewalks have High Transit
Accessibility (average proximity to each stop)
§ Sidewalks in areas of high
Traffic Speed
§ High Connectivity of Existing
Sidewalk Network (not linear miles, but instead a GIS function)
§ Sidewalks in areas with existing
Pedestrian Crossing Assistance Facilities
§ High # of new sidewalks built in
areas with evidence of Existing Pedestrian Usage
§ Cost effectiveness ratio = #
residents and office workers / linear miles of sidewalks added
Other Comprehensive performance
measures
(reference: http://www.vtpi.org/tdm/tdm131.htm
·
Accessibility (ability to reach desired
goods, services and activities), including the travel time and costs required
by various users to reach activities and destinations such as work, education,
public services and recreation (CTS 2010)
·
Land Use Density and Mix - Number of job opportunities
and commercial services within 30-minute travel distance of residents.
·
Children’s
accessibility - Portion
of children who can walk or bicycle to Schools, shops and parks from
their homes.
·
Mode
split -
Portion of travel made by walking, cycling, rideshare, public transit and
telework.
·
Consumer
Transport Costs and Affordability - Portion of household
expenditures devoted to transport, including vehicle expenses, fares,
residential parking costs, and taxes devoted to transport; particularly by
people who are economically, socially and physically disadvantaged.
·
Facility
costs - Per
capita expenditures on roads, traffic services and parking facilities (Transport
Costs).
·
Planning
Practices - Degree
to which transport institutions reflect Least-cost planning and investment
practices. Higher is better.
·
Planning process - Range of impacts and
options considered in the planning process, and quality of public
involvement.
·
Health and fitness - Portion of population that
regularly uses active transport modes (walking and cycling).
·
Community Livability - Degree to which transport
activities increase community livability (local environmental quality).
·
Basic Mobility and Access – Quality of transport to
access socially valuable activities such as medical services, education,
employment and essential shopping, particularly for disadvantaged populations.
·
Multi-Modal
Level-of-Service Indicators
evaluate the quality of various transport modes from a users perspective. This
helps create a more neutral planning decisions compared with current practices
which apply roadway LOS ratings but no comparable indictors for other modes.
·
Energy Consumption and
Pollution Emissions
– the amount of transportation energy used and pollutants emitted.
Walking
|
Sidewalk/path
supply
Pedestrian
LOS
Crosswalk
conditions
|
Pedestrian
mode split
Avg.
annual walk distance
Pedestrian
crash rates
|
Cost
per sidewalk-mile
Cost
per walk-mile
Cost
per capita
|
Cycling
|
Bike
path and lane supply
Cycling
LOS
Path
conditions
|
Bicycle
mode split
Avg.
annual cycle distance
Cyclist
crash rates
|
Cost
per path-mile
Cost
per cycle-mile
Cost
per capita
|