September-October_2021 - 24

How LiDAR is
Making Roads Safer for
Pedestrians and Cyclists
Smart cities are utilizing intelligent road
management to make informed decisions on policies
and infrastructure changes that will improve safety.
By Gerald Becker, contributor
s populations have swelled and
road traffic has increased in
major metro areas throughout
the world, keeping pedestrians
and cyclists safe
has become an increasingly
important global public
health concern. According
to the Centers for Disease
Control and Prevention, 3,700
people are fatally injured each
day in traffic accidents around the
world- a total of more than 1.35
million per year. More than half
of these fatalities are pedestrians,
motorcyclists and cyclists.
The most recent road safety
report from the World Health
Organization (WHO) notes that
traffic injuries are now the leading
cause of death globally for
individuals between the ages of
five and 29. The economic toll is
massive. One study of 166 countries
estimated that crash injuries
will cost the world economy $1.8
trillion dollars (in 2010 USD) from
With more people and vehicles
sharing the roads, intelligent road
management and smarter traffic
policies are critical to saving lives
and building safer cities. To meet
this growing need, smart cities
around the world have begun
implementing LiDAR to monitor
traffic and collect critical data to
inform policies and infrastructure
changes to protect pedestrian and
cyclist safety.
Traffic Intelligence:
How it Works
Light Detection and Ranging (LiDAR)
is a time-of-flight sensing
technology that pulses low-power,
eye-safe lasers and measures
the time it takes for the laser to
complete a round trip between the
sensor and a target. The resulting
data is used to generate 3D point
cloud images, providing advanced
3D perception and situational
awareness about the scanned
area. This data is then analyzed
with computer perception software
to extract valuable insights
and power real-time, data-driven
Installed at roads and intersections,
LiDAR sensors monitor and
autonomously collect traffic data,
including how and when people
24 | Mass Transit | | SEPTEMBER/OCTOBER 2021
of the
system and
the dashboard
where data
can be viewed.
and vehicles use this critical infrastructure.
For example, the LiDAR
sensors can identify and count
pedestrians jaywalking, measure
vehicle traffic volume, identify
speeding vehicles and other hazards
and much more.
This data can then be compared
by time of day, day of the
week, to identify patterns, predict
safety hazards and ultimately inform
transportation policies to
improve pedestrian and cyclist
safety. For example, data from
LiDAR sensors is currently being
used in cities to inform decisions
and understand key metrics like:
* How many traffic lights should be
installed, and where, to be most
* How long should the pedestrian
crossing time be?
* What hours and days of the
week are experiencing the highest
traffic and pose the highest
safety risk?


Table of Contents for the Digital Edition of September-October_2021

Editor's Notebook
People & Places
Make Digitalization Part of Your Rail and Transit Strategy
LYNX: Primed for Post-Pandemic Acceleration
How LIDAR is Making Roads Safer for Pedestrians and Cyclists
Get Ready for APTA's Big Event
A 21st Century Approach to Fare Collection
Best Practices
The Scheduling Conundrum
September-October_2021 - 1
September-October_2021 - 2
September-October_2021 - 3
September-October_2021 - 4
September-October_2021 - Editor's Notebook
September-October_2021 - 6
September-October_2021 - 7
September-October_2021 - People & Places
September-October_2021 - 9
September-October_2021 - 10
September-October_2021 - 11
September-October_2021 - Make Digitalization Part of Your Rail and Transit Strategy
September-October_2021 - 13
September-October_2021 - 14
September-October_2021 - 15
September-October_2021 - LYNX: Primed for Post-Pandemic Acceleration
September-October_2021 - 17
September-October_2021 - 18
September-October_2021 - 19
September-October_2021 - 20
September-October_2021 - 21
September-October_2021 - 22
September-October_2021 - 23
September-October_2021 - How LIDAR is Making Roads Safer for Pedestrians and Cyclists
September-October_2021 - 25
September-October_2021 - 26
September-October_2021 - 27
September-October_2021 - 28
September-October_2021 - 29
September-October_2021 - Get Ready for APTA's Big Event
September-October_2021 - 31
September-October_2021 - 32
September-October_2021 - 33
September-October_2021 - 34
September-October_2021 - 35
September-October_2021 - 36
September-October_2021 - 37
September-October_2021 - 38
September-October_2021 - 39
September-October_2021 - A 21st Century Approach to Fare Collection
September-October_2021 - 41
September-October_2021 - 42
September-October_2021 - 43
September-October_2021 - 44
September-October_2021 - 45
September-October_2021 - Best Practices
September-October_2021 - 47
September-October_2021 - Products
September-October_2021 - 49
September-October_2021 - The Scheduling Conundrum
September-October_2021 - 51
September-October_2021 - 52