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Now Available: Innovators Under 35 2013 See The 2013 List »

Der-Horng Lee, 34

Transportation

National University of Singapore

Singapore leads the world in fighting traffic with technology. Vehicle sensors are ubiquitous, and so are message signs warning drivers of upcoming jams. Drivers are even charged higher tolls during rush hour. But when the island government seeks to boost the IQ of these “intelligent highways,” it turns to Der-Horng Lee, a civil engineer at the National University of Singapore. He is in demand among transportation engineers and companies worldwide, helping them write better software that models traffic and controls road signals and signs in real time—for example, changing urban stoplight sequences on the fly as drivers flee rush-hour highways. Lee says traffic prediction is like weather prediction, only tougher. Predictions must be done quickly and account for the fact drivers might change plans after hearing them. The key is having the right algorithm, based on the right traffic simulation model. Most models assume group behavior, but Lee’s “microscopic” models acknowledge that some traffic-bound drivers will sit in the mess while others will cut through city streets or choose a longer highway route.

2002 TR35 Winners

Andrew Barrows

Transportation

Elisabeth M. Belding-Royer

Telecommunications

Vincent Berger

Telecommunications

Eric Bonabeau

Software

Daniel Branagan

Materials

Arnaud Brignon

Hardware

Howie Choset

Hardware

Michelle Effros

Telecommunications

Alexander Fay

Transportation

Claire Gmachl

Telecommunications

Michael Hansen

Hardware

Tom Hyongsok Soh

Telecommunications

Matt Keyser

Energy

Kara Kockelman

Transportation

Paul Krajewski

Transportation

Der-Horng Lee

Transportation

Ihor Lys

Hardware

Larry Mianzo

Transportation

Chahab Nastar

Software

Bill Nguyen

Telecommunications

Rajesh Reddy

Telecommunications

Vincent Rijmen

Software

Jonathan Rosenberg

Telecommunications

Steven Shaw

Energy

Anna Stefanopoulou

Transportation

Lisa Su

Hardware

Vahid Tarokh

Telecommunications

Steve Tuecke

Software

Les Welch

Transportation

Sean Willems

Software

Neil Young

Entertainment

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