Land Use and Built Environment

Old Road, New Directions: Plan for Adeline Street in Berkeley, California

Julia Griswold
Aaron Malinoff
Karen Trapenberg Frick
Elizabeth Deakin
2011

This paper presents a plan for transforming a major arterial and a transit station that divide a low-income business and residential district into an economically healthy, context-sensitive, transit-oriented development. Adeline Street is a major point of entry into Berkeley, California, linking the city of Oakland on the south to the central districts of Berkeley. Formerly a major streetcar corridor, Adeline is now the location of a Bay Area Rapid Transit (BART) station and a surface parking lot, for which housing and businesses were removed in the 1960s. The street's 180-ft right-of-way...

Transportation and Land Development

Elizabeth Deakin
Arthur C Nelson
Kristina Currans
David Lee
John Renne
2019

The Transportation and Land Development Committee (ADD30), a standing committee of the Transportation Research Board (TRB), was established in 1972 to improve the understanding of the interrelationships between transportation and patterns of urbanization, along with the economic, social, and environmental consequences of transportation and land development choices. Topics that fall within the committee’s purview include: the effect that transportation infrastructure has on urban form and development; the impact that urban form, development, and design has on travel behavior; the impact...

Impact of Peak and Off-Peak Tolls on Traffic in San Francisco–Oakland Bay Bridge Corridor in California

Ian Barnes
Karen Trapenberg Frick
Elizabeth Deakin
Alexander Skabardonis
2012

The San Francisco–Oakland Bay Bridge is located in the heart of the San Francisco Bay Area in California and connects two of the largest cities in northern California over San Francisco Bay. In July 2010, the Bay Area Toll Authority (BATA) increased tolls on the San Francisco–Oakland Bay Bridge from a flat toll collected westbound only to weekday peak and off-peak tolls. BATA also instituted a carpool toll of $2.50 (previously carpools crossed for free) payable by FasTrak electronic toll collection tag only. With floating-car data provided by BATA, the change in travel time for the I-80, I...

Multi-Lane Hybrid Traffic Flow Model: Quantifying the Impacts of Lane-Changing Maneuvers on Traffic Flow

Laval, Jorge A.
Carlos Daganzo
2004

A multi-lane traffic flow model realistically captures the disruptive effects of lane- changing vehicles by recognizing their limited ability to accelerate. While they accelerate, these vehicles create voids in the traffic stream that affect its character. Bounded acceleration explains two features of freeway traffic streams: the capacity drop of freeway bottlenecks, and the quantitative relation between the discharge rate of moving bottlenecks and bottleneck speed. The model com- bines a multilane kinematic wave module for the traffic stream, with a detailed constrained-motion model to...

Geographical Routing Using Partial Information for Wireless Ad Hoc Networks

Jain, Rahul
Puri, Anuj
Raja Sengupta
2001

In this paper, we present an algorithm for routing in wireless ad hoc networks using information about geographical location of the nodes. We assume each node knows its geographical position and the position of the node to which it wants to send a packet. Initially, the nodes only know their neighbors but over time they discover other nodes in the network. The routing table at a node S is a list ((pi, Si)) where pi is a geographical position and Si is a neighbor of node 5’. When node S receives a packet for a node D at position pos(D), it finds the pi in its routing table which is closest...

An Architecture for UAV Team Control

Rathinam, Sivakumar
Zennaro, Marco
Mak, Tony
Raja Sengupta
2004

Recent years has seen a widespread interest in the use of Unmanned aircraft vehicles for military applications. These UAV's can be used in many applications such as surveillance, information gathering, suppression of enemy defenses, air to air combat, mapping buildings and facilities etc. In this paper, we present an architecture with the necessary algorithms that we have implemented to control a team of UAVs to search for targets such as SAMs, ground troops, artillery, tanks etc in a given region.

A Multi-channel VANET Providing Concurrent Safety and Commercial Services

Mak, Tony K.
Laberteaux, Kenneth P.
Raja Sengupta
2005

One of the key goals of a vehicular ad-hoc network (VANET) is providing sufficient quality of service (QoS) for real-time safety applications while concurrently supporting commercial services. This paper proposes a multi-channel wireless communication architecture and protocol for the scenario where commercial services are provided by roadside infrastructure. This solution extends the IEEE 802.11 wireless LAN protocol to schedule periodic safety messages in a "safety channel". It explicitly supports concurrent non-time-critical communications in separate, non-safety "service channels"....

Vision-Based Following of Structures Using an Unmanned Aerial Vehicle (UAV)

Rathinam, Sivakumar
Kim, ZuWhan
Raja Sengupta
2006

Inspecting and monitoring oil-gas pipelines, roads, bridges, canals are very important in ensuring the reliability and life expectancy of these civil systems. An autonomous Unmanned Aerial Vehicle (UAV) can decrease the operational costs, expedite the monitoring process and be used in situations where a manned inspection is not possible. This paper addresses the problem of monitoring these systems using an autonomous UAV based on visual feedback. A single structure detection algorithm that can identify and localize various structures including highways, roads, and canals is presented in...

The software architecture of the Berkeley UAV Platform

Tisdale, John
Ryan, Allison
Zennaro, Marco
Xiao, Xiao
Caveney, Derek
Rathinam, Siva
Hedrick, J. Karl
Raja Sengupta
2006

This paper details the software architecture of the Berkeley unmanned aerial vehicle (UAV) platform. Developed over the course of three years, this platform has successfully demonstrated autonomous vision-based navigation and obstacle avoidance. A software architecture has been developed to allow for collaborative control concepts to be examined. This modular architecture has been shown to be effective for use in allowing a team of UAVs to collaboratively perform a set of missions. The performance of the architecture was demonstrated using 3 UAVs to perform autonomous collaborative...

Vision-Based Monitoring of Locally Linear Structures Using an Unmanned Aerial Vehicle1

Rathinam, Sivakumar
Kim, Zu Whan
Raja Sengupta
2008

Inspecting and monitoring oil-gas pipelines, roads, rivers, and canals are very important in ensuring the reliability and life expectancy of these civil systems. An autonomous unmanned aerial vehicle (UAV) can decrease the operational costs, expedite the monitoring process, and be used in situations where a manned inspection is not possible. This paper addresses the problem of monitoring these systems using an autonomous UAV based on visual feedback. A single structure detection algorithm that can identify and localize various structures including highways, roads, and canals is presented...