presented by nazir lalani p.e n_lalani@hotmail.com traffic safety evaluations (pedestrians and...

Presented by Nazir Lalani P.E

n_lalani@hotmail.com

TRAFFIC SAFETY EVALUATIONS(Pedestrians and Bicyclists)

Administered by ITS at UC Berkeley

Funded by OTS

Two Evaluators – Engineer and Law Enforcement Officer

Typically initiated by an agency

Public Works or Police/Sheriff’s Department

Process begins with completion of an “Intake” Form

ABOUT THE TSE PROGRAM

Identifies the requesting agency

Provides contact information of the participating staff members

Lists the available information

Identifies the primary focus areas of the evaluation

May include attachments such as maps or aerial photographs

Form used by evaluators to establish contact with agency staff

Dates for two-day site visit established and confirmed by ITS

INTAKE FORM

Top ten crash locations based on SWITRS data

Top five crash corridors based on SWITRS data

Pedestrian and bicycle circulation

School circulation issues

Cut through traffic on residential streets

Evaluation of previously identified solutions (roundabouts)

Evaluation of recently constructed improvements

Traffic signal timing and phasing

FOCUS AREAS - ENGINEERING

ENGINEERING

Identified by law enforcement evaluator

SWITRS data or Crossroads if used by agency

Based on total number of crashes – not crash rates

Types of collisions and citations issued

Data sorted prior to site visit

Used during site visit to analyze locations

Used after site visit to prepare the final report

HIGH CRASH LOCATIONS

Takes place over a two day period

Begins with kick-off conference call (This is new)

Engineer evaluator tours city to analyze high crash locations

Engineer also evaluates other issues such as schools

Law enforcement officer meets with agency officers

Exit meeting held on second day to report preliminary findings

Final report prepared based on exit meeting discussions

SITE VISIT

Crosswalk with two white lines

Broadside collisions due to restricted sight distanceand Yield sign controls on two approaches

Schools have presented special challenges

Roads with no turn lanes or bike lanes need to be put on a diet!

Four travel lanes restriped to two lanes, left-turn lane and bike lane to reduce collisions

(aka “Road Diet”)

Scramble pattern for pedestrians

San Luis Obispo, CAScramble pattern for bicyclists

Better placement of gates would also protect peds and bikes

Warning displays at light rail station pedestrian crossing

Increased use of blank out signs

Truck apron is 7” high – too severe – generating complaintsfrom bus passengers

IDENTIFY COUNTERMEASURES

PEDESTRIAN COLLISION COUNTER MEASURES

Compliance with CAMUTCD

Upgrade markings

Improved signage

Positive traffic control/warning devices

Crosswalk relocations

Crosswalk removals

Traffic calming treatments

Invisible marked crosswalk

How many enhancements have been used here?

http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_562.pdf (Send an email to n_lalani@hotmail.com for a pdf)

Provide on street striped bike lanes

Encourage bicyclists to ride with traffic

Colorized treatments to distinguish bike lanes

Provide better markings at intersections

Providing warning to drivers making turns

Remove parking

Establish Bike Boulevards

Provide better crossings for bike paths

BICYCLE CRASH COUNTEREASURES

Bike box with color surface treatment

Colored bike lanes in high conflict zones

LAW ENFORCEMENT

Collisions by Time of Day

“Rat Box”

High Tech

Automated Enforcement

Mobile or fixed

FINAL REPORT

Introduction

Background and Collision History

Traffic Engineering Evaluation

Law Enforcement Evaluation

Report Sections