Thesis (Ph. D.)--University of Notre Dame, 1932. / Descriptive letterpress on versos of plates. Bibliography: p. 140-144.

Thesis (Ph. D.)--University of Notre Dame, 1932. / Descriptive letterpress on versos of plates. Bibliography: p. 140-144.

Automatic Vehicles is a possible future, but it does not mean that we should forget about improving the present day to day life. Most vehicles have Cruise Control, and few have Adaptive Cruise Control, but very few have Cooperative Adaptive Cruise Control(CACC) because it's an integration of software and hardware as different companies produce different vehicles it's hard to get on common ground. CACC at the core is communication among vehicles and sharing information; in this thesis, I tried to make it usable in any car with just the software used in a smartphone. As everybody has a phone in their hand with an inbuilt GPS, it is easier to use it directly rather than have a unique mechanical device embedded with a software application. My application gives the estimated speed usable at a particular time based on the other two vehicles, and it keeps changing based on other cars. It does not depend on any external sensors; hence, no environmental change can affect the data give by my vehicle. This application is a guide that could be used in the snow, rain, or hail when even eyes or technology cannot help. Location and speed are something, and using them and providing safety is my thesis all about.

The author's doctoral dissertation, University of Michigan, 1923, but not published as a thesis. / Bibliography: p. 231-232.

The author's doctoral dissertation, University of Michigan, 1923, but not published as a thesis. / Bibliography: p. 231-232.

Thesis (Ph. M.)--University of Wisconsin--Madison, 1938. / Typescript. eContent provider-neutral record in process. Description based on print version record.

Traffic platoons created by traffic signals may have impacts on the operations of downstream intersections because they change the arrival pattern and gap distribution of upstream traffic. There’s been a lot of research dealing with platoon effects on operations at signalized intersections, while very limited research has been done for that of unsignalized intersections. This research aims to develop a methodology for analyzing the platoon impacts on major-street left-turn (MSLT) delay at two-way stop-controlled (TWSC) intersections. The main idea is using a microscopic simulation tool to simulate different platoon scenarios in opposing through traffic, then applying regression models to capture the impacts of platoons on the delay of MSLT. Two platoon variables were adopted as a simplification of the complex platoon scenarios, making it practical to analyze the platoon effects on MSLT delay. The first two steps were to build simulation models for real-world unsignalized intersections and simulate scenarios with a combination of various factors related to platoons in VISSIM simulation. Calibrations of these simulation models based on field data were performed before simulation started. The next step was to define, derive and calibrate two platoon variables for describing the duration and intensity of platoon arrivals in the opposing through traffic, which effectively simplified the large combination of various factors. At last, the two platoon variables and their relationship with MSLT delay change factor were modeled with regression tools. A relationship between the two variables and the delay change factor was established, which indicated a positive effect by upstream platoons on MSLT delay and made it possible to quantify the impacts. The findings in this research could also be used for future research on left turn treatment regarding platoon or signal impacts.

Automated Electric Transportation (AET) proposes a system of automated platooning vehicles electrically powered by the roadway via wireless inductive power transfer. This has the potential to provide roadway transportation that is less congested, more flexible, cleaner, safer, and faster than the current system. The focus of this research is to show how platooning can be accomplished in a safe manner and what capacities such an automated platooning system can achieve. To accomplish this, first two collision models are developed to show the performance of automated platoons during an emergency braking scenario: a stochastic model coded in Matlab/Simulink and a deterministic model with closed-form solutions. The necessary parameters for safe platooning are then defined: brake variances, communication delays, and maximum acceptable collision speeds. The two collision models are compared using the Student's t-test to show their equivalence. It is shown that while the two do not yield identical results, in most cases the results of the deterministic model are more conservative than and reasonably close to the results of the deterministic model. The deterministic model is then used to develop a capacity model describing automated platooning flow as a function of speed and platoon size. For conditions where platooning is initially unsafe, three amelioration protocols are evaluated: brake derating, collaborative braking, and increasing the maximum acceptable collision speed. Automated platooning flow is evaluated for all of these scenarios, compared both with each other and with traditional roadway flow patterns. The results of these models show that when platooning is initially safe, very high vehicle flows are possible: for example, over 12,000 veh/hr for initial speeds of 30 m/s and 10 vehicle platoons. Varying system paramaters can have large ramifications for overall capacity. For example, autonomous (non-platooning) vehicles do not promise anywhere near this level, and in many cases struggle to approach the capacity of traditional roadways. Additionally, ensuring safety under an emergency braking standard requires very small communication delays and, most importantly, tight braking variances between the vehicles within a platoon. As proposed by AET, a single type of electric vehicle, combined with modern wireless communications, can make platooning safer than was previously possible without requiring amelioration. Both brake derating and collaborative braking can make platooning safer, but they reduce capacity and may not be practical for real-world implementation. Stricter versions of these, cumulative brake derating and exponential collaborative braking, are also evaluated. Both can degrade capacity to near current roadway levels, especially if a large degree of amelioration is required. Increasing maximum acceptable collision speed, such as through designing vehicles to better withstand rear-end collisions, shows more promise in enabling safe intraplatoon interactions, especially for scenarios with small communication delays (i.e. under 50 ms).

<p>This essay is about the engineer platoon. The engineer platoon has many different tasks and from my own experience sometimes too many. The platoon is able to build bridges, clear mines and to perform all kinds of construction work in rural or in urban terrain.</p><p>In this case study I compare goals/demands for the battalion to goal’s set up for the company and finally what effects this has on the engineer platoons abilities. The main question is, if the engineer platoon really can solve all tasks given to them in the document TOEM? Abilities such as effect, protection and movement are the bearing parts of the case study.</p><p>The materials I have analyzed are mostly from documents published by The Swedish Armed Forces. The most important document is TOEM, where all demands are presented for the Combat-Support engineer battalion 2009. The essay also discusses why different priorities are made and what effects will be the result in the long term. After reading this essay you will come to find out that engineers sometimes have too many tasks to solve.</p>

This essay is about the engineer platoon. The engineer platoon has many different tasks and from my own experience sometimes too many. The platoon is able to build bridges, clear mines and to perform all kinds of construction work in rural or in urban terrain. In this case study I compare goals/demands for the battalion to goal’s set up for the company and finally what effects this has on the engineer platoons abilities. The main question is, if the engineer platoon really can solve all tasks given to them in the document TOEM? Abilities such as effect, protection and movement are the bearing parts of the case study. The materials I have analyzed are mostly from documents published by The Swedish Armed Forces. The most important document is TOEM, where all demands are presented for the Combat-Support engineer battalion 2009. The essay also discusses why different priorities are made and what effects will be the result in the long term. After reading this essay you will come to find out that engineers sometimes have too many tasks to solve.