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Un experimento sobre cómo los coches autónomos ayudarán a evitar los atascosPor @Alvy — 8 de febrero de 2025Jonathan Sprinkle | Self-driving cars experiment demonstrates dramatic improvements in traffic flowHace tiempo que la ciencia ha sido capaz de explicar una de las razones de los «misteriosos atascos» en las carreteras: la lenta reacción de los conductores propicia que se formen las aglomeraciones que no se resuelve a tiempo. Somos lentos en reaccionar cuando hay que frenar y somos lentos al arrancar. Esto propicia una especie de «efecto acordeón» o atasco de tráfico fantasma que crece y crece y que, como las ondas sobre la superficie de un lago, a la larga puede coincidir con tan mala suerte que deje a los vehículos literalmente parados.Pero hete aquí que la llegada de los coches autónomos ha arrojado una nueva luz sobre cómo pueden resolver este tipo de problemas, en especial esos «atascos fantasma» sin razón aparente. Y es tan simple como añadir un coche autónomo en la ecuación.En el experimento que puede verse en el vídeo –en el que colaboró un equipo multidisciplinar de cuatro universidades– se puede ver cómo se analizó todo esto: una veintena de coches circulan dando vueltas, casi como si estuvieran en una larga recta encontrándose con diversos escenarios de más o menos tráfico. Casi todos los coches están conducidos por «personas» simuladas, pero entre ellos hay un coche autónomo (marcado con la flecha) cuyo comportamiento y velocidad varía según su programación.El algoritmo o fórmula en cuestión controla el vehículo de tal forma que minimiza las veces que el conductor humano que va detrás de él tiene que accionar el freno. Este es el origen del problema, de modo que una conducción más suave –aunque sea más lenta– ayuda a que la velocidad no tenga tantas bruscas variaciones. La gráfica inferior muestra la velocidad en el eje vertical y el tiempo en el horizontal: cuanto más amplias las variaciones, más problemas. Cuanto más estrecha y estable, mejor velocidad media.En total se probaron diversos números de «frenazos», entre 2 y 9 por kilómetro. Cuando hay que frenar pocas veces también hay que volver a recuperar velocidad pocas veces, de modo que valores entre 2 y 3 veces por kilómetro son los óptimos. Esto no solo hace más fluido el tráfico: también reduce el consumo de combustible hasta un 40 por ciento.Lo más interesante del asunto es que tan solo hace falta un coche de cada veinte (más o menos un cinco por ciento) para que la situación mejore considerablemente. Si esto es extrapolable –como parece– a las situaciones de tráfico convencional en las calles y carreteras significa que no será necesario que todos los coches sean autónomos; tan pronto como un número significativo de ellos circulen libremente deberían empezarse a notarse los efectos. Nuestros futuros amigos calculadores, metódicos y con reflejos dignos de cualquier deportista de élite también nos ayudarán en esto.
Lyft Eyes Robotaxi Launch in 2026Posted by msmash on Monday February 10, 2025 @11:44AM from the up-next dept.Lyft says it will launch a fleet of robotaxis, using self-driving technology from Intel's Mobileye, in Dallas in "as soon as 2026," with plans to scale to "thousands" of vehicles in additional markets in the months to follow. From a report:CitarTo signal its seriousness, the company tapped Marubeni, a Japanese conglomerate, to run fleet operations. Lyft's news comes after Uber dropped new details about its plan to feature Waymo's robotaxis on its platform in Austin and Atlanta later this year. And Tesla recently shared plans to launch a robotaxi service in Austin this summer.
To signal its seriousness, the company tapped Marubeni, a Japanese conglomerate, to run fleet operations. Lyft's news comes after Uber dropped new details about its plan to feature Waymo's robotaxis on its platform in Austin and Atlanta later this year. And Tesla recently shared plans to launch a robotaxi service in Austin this summer.
China's BYD Adding 'High-Level' Self-Driving To Its Budget $10K EVPosted by BeauHD on Monday February 10, 2025 @08:50PM from the market-disruption dept.Chinese automaker BYD is offering its advanced "God's Eye" autonomous technology in mass-market EVs like the $9,500 Seagull, while expanding globally with government-backed EV initiatives. Gizmodo reports:CitarPreviously, BYD had limited its driver assistance features to higher-end models that cost more than $28,000, according to BYD CEO Wang Chuanfu. In expanding the technology to the Seagull and other cars for no extra charge, Chuanfu said "good technology should be available to everyone." Other BYD vehicles getting the addition of the technology including cars from its Ocean, Han, Song, and Yuan lineups, as well as its hybrid vehicles. "God's Eye was developed in-house by BYD and will equip the automaker's mass-market models with features commonly only found on upscale EVs such as remote parking via smartphones and autonomous overtaking on roads," the company said.BYD says the level of autonomy present in each car will vary depending on which sensors are equipped in the cars. Some of its pricier cars, for instance, include LiDAR sensors like those found in Waymos, which can offer faster and more precise object detection than cameras alone, particularly in low-light conditions or when a roadway is obstructed by rain or fog. [...] China's government has heavily prioritized the transition to electric vehicles with strong incentives, and BYD has managed to turn a profit on its electric vehicles, a feat that has heretofore only been accomplished by Tesla. The importance to China is clear: As the world continues transitioning to EVs, the likes of BYD have been able to push into markets including Europe and South America as Western brands lose share.
Previously, BYD had limited its driver assistance features to higher-end models that cost more than $28,000, according to BYD CEO Wang Chuanfu. In expanding the technology to the Seagull and other cars for no extra charge, Chuanfu said "good technology should be available to everyone." Other BYD vehicles getting the addition of the technology including cars from its Ocean, Han, Song, and Yuan lineups, as well as its hybrid vehicles. "God's Eye was developed in-house by BYD and will equip the automaker's mass-market models with features commonly only found on upscale EVs such as remote parking via smartphones and autonomous overtaking on roads," the company said.BYD says the level of autonomy present in each car will vary depending on which sensors are equipped in the cars. Some of its pricier cars, for instance, include LiDAR sensors like those found in Waymos, which can offer faster and more precise object detection than cameras alone, particularly in low-light conditions or when a roadway is obstructed by rain or fog. [...] China's government has heavily prioritized the transition to electric vehicles with strong incentives, and BYD has managed to turn a profit on its electric vehicles, a feat that has heretofore only been accomplished by Tesla. The importance to China is clear: As the world continues transitioning to EVs, the likes of BYD have been able to push into markets including Europe and South America as Western brands lose share.