Massachusetts Bay Transportation Authority has launched a new mobile website for the benefit of users on the go.mobileMBTA.com, powered by Usablenet, provides MBTA riders with easily accessible schedules and service alerts, as well as a customer comment form, an apps page, and trip planning through Google Maps.

Officials believe a 22-year-old Boston University grad had been drinking before he was fatally struck by a Green Line trolley early Sunday morning.

Joshua Stimson of Brighton, struck by a D-branch train. He was found on the eastbound tracks and pronounced dead at the scene.

The Boston Globe reported that Stimson graduated in the spring from the School of Management where he majored in finance. He started a job last week and was excited to be out working in his field, friends said.

T officials said alcohol was believed to have been a factor, based on interviews with friends that saw him before he died. Stimson may have been intoxicated and stumbled into the tracks.

State Police assigned to Suffolk County District Attorney Daniel F. Conley’s office and MBTA Transit Police are investigating an early-morning crash the critically injured a 54-year-old pedestrian.

The accident occurred Friday around 2 a.m. at the intersection of Huntington Avenue and Ring Road in Back Bay shortly. A T bus traveling westbound on Huntington Avenue struck the male victim.

“Preliminary findings suggest that the bus was traveling at a low rate of speed at the time of the collision,” Conley’s office said in a statement. “Civilian witnesses told investigators that the victim was seen running toward the bus as the bus was turning onto Ring Road. The operator of the bus told investigators that he felt an impact and immediately stopped the bus.”

Investigators did not immediately detect the signs of alcohol or drug impairment, but the driver, 50, will be tested under MBTA policy. He has been with the MBTA for five years. Neither his name nor the name of the victim were released.

A newly released map of the MBTA system shows the subway, some key bus lines, commuter rail, and a new connection of the Silver Line to South Station.

Click here to download the map now so that you’ll never get lost again.

The shallow corridors of Arlington Station provide a walkway for bustling businessmen, a means of transport for blundering tourists and the perfect acoustics for a classical guitarist who finds peace in his daily grind of playing to the passersby.

Playing with upturned lips, David Gonzales, knowingly picks at his guitar but without the pride of a man who has played for as long as he has. Rather, he shyly gazes upon the crowd with a humble smile, and you’d swear you’d known him for years. His thick fingers play soft chords and gentle rhythms that would soothe the most hurried of subway travelers. He first picked up the guitar at age 8. The music comes easily now.

A 3-foot blonde strolls by, dancing in her yellow raincoat. She can’t be more than four years old, but she is one of the few who takes notice of Gonzales. At that moment, he glances up and plays just for her, and they share a smile.

There is a stigma surrounding him simply because he plays music in the streets. “People can say what they say,” he offers. And while his guitar case stays empty for large parts of the day, a casual smile remains on his face. Gonzales plays because he wants to, not because he has to.

“It’s not about the money,” Gonzales says. “My God, you have no idea how much money I could make doing this is Europe, in Asia.”

Dressed in a pink and white striped polo with light-colored khakis, Gonzales has the appearance of a casual businessman. He owns 22 pairs of tennis shoes. “I am dressed like rich, and I play in the streets,” he says in his still thick Argentine accent, though he has survived in the US for more than eight years. “This is who I am. This is my life,” he says, without apology. “The key is, you must do something to survive.”

Gonzales grew up very poor on the streets of South America. In appearance, he is unlike most Argentinians, with dark skin and eyes the color of molasses. Because of this, Gonzales says he experienced discrimination very early, even by his own stepfather, who never offered him money or life lessons. So he grew up poor and without role models.

“I was born very, very poor. We were sleeping in a king bed, four people, maybe five. So I know how much value you can learn from life,” he says.

But that is all he talks of his past. Instead, he focuses on the future and on his place in society.

“Everything I want I can make true in my life,” says Gonzales. “It’s confidence. If you have truth, confidence and determination … everything is possible. I can decide and design the life I want and have it.”

And he has. Gonzales worked as a photographer for an international magazine for three years, he worked for Delta airlines, he learned to scuba dive off the coasts of Brazil, he played professional rugby in France, he’s worked as a personal trainer and he owned a landscaping company. “I like the difficult things,” he says. “Every part of history to my life is big.”

One of his bigger moments came, Gonzales says, when he began getting acclaim for his photography and seeing the seedier side of journalism. He once was asked to take a picture of a prominent South American lawyer caught in an affair. So on a Brazilian beach, he found them, and he photographed him holding hands with his mistress. The controversy surrounding the picture is what drove Gonzales out of the field. “I am a journalist. We are the worst people in the world,” he says. “Where’s the love man?”

Each job tells another story. And he is not finished yet. “There are many things I long to do,” he says.

When’s he not playing music, Gonzales still plays rugby for the Boston Irish Wolfhounds and has since 2003. He loves the game. “It’s a gentleman’s sport,” he says proudly.

One of his teammates, Mike Kerry, spoke of Gonzales in an excited Irish brogue. “He’s a good guy,” he said. “Workways, he seems to have always jumped around to different things. But he seems to have found his niche … seems to be happier playin’ the music.”

“I am happy,” Gonzales says. “It’s not only the music, it’s the way I am.”

“I like the guitar,” he says. And pauses to grin. “I like food.” And though he makes a living strumming the guitar, he plays for the love of it and for the people who listen. “It’s not about the money,” he says again. “It’s an exchange of peace.”

“Everybody is afraid,” he says, of the economy, of Iran, of the swine flu. Gonzales plays for them.

There is a man who passes him by often, a Boston judge, who once remarked to him, “your music gives me a lot of peace,” Gonzales said.

Gonzales, who believes in karma, says “peace and love” are the only things he carries, and distributes alongside the music.

“I have many good things to give. I don’t want one person to say I didn’t learn one good thing. Wherever I’m going, I’m bringing peace.”

It is up to him, where that may be. Perhaps a professional rugby coach, perhaps back to Delta. But one thing is for sure, Gonzales is not scared of anything,

“Each time you pull me down, I go up,” he grins broadly. “And when I die, I wanna be like this.”

Transit officials said the operator of an MBTA Green Line Trolley was text messaging someone on his cell phone as his train rear ended another train near Government Center Station Friday evening.

Dozens were injured, and 49 people were taken to area hospitals.

Commuters, students finishing for the year, tourists and a bevy of fans headed to Friday’s Red Sox game were among the dozens of people injured in a subway crash near the MBTA’s Government Center Station, normally a bustling station near Boston City Hall and the Quincy Market area.

None of the injuries are considered life threatening.

According to officials, the train rear-ended another train at 7:18 p.m. The second train was pushed to within 75 feet of the station.

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A former Brewster cop faces possible jail time after authorities said he exposed himself to and urinated on a 17-year-old girl and a 21-year-old guy from Connecticut during a Metallica concert at the TD Banknorth Garden.

They say he had been drinking.

Joseph Houston, 29, faces two counts of assault and battery and a count of open and gross lewdness after the Jan. 18 incidnet.

According to the Suffolk County District Attorney’s office, Houston was arrested by MBTA Transit Police at North Station, adjacent to the Garden after Houston was ejected from the concert and refused to leave. During the incident, Houston allegedly flashed his police department badge and referred to one of the security guards trying to escort him out of the concert as “Obama.”

An Everett man was banned from MBTA property after he was arraigned Wednesday on charges he groped a woman on the Orange Line, authorities said.

Jose Velasquez, 67, was charged with indecent assault and battery.

“We will continue to seek high bails and strong punishments for these offenses until everyone gets the message,” said Suffolk County District Attorney Daniel F. Conley. “This behavior is not acceptable and it will not be tolerated. It’s sexual violence and we will treat it as such.”

According to Conley’s office, members of the MBTA Transit Police responded to Forest Hills Station shortly after 5:00 p.m. Tuesday for a report that a woman had been assaulted. On arrival, they met with the victim, a 51-year-old Mattapan woman, who was speaking to an MBTA inspector. She told Transit Police that Velasquez approached her after Green Street Station and touched the right side of her body. The woman told him to stop, but he allegedly groped her from behind as she stood and moved away from him.

Velasquez was captured later at Stony Brook station.

Velasquez will be back in court March 30.

Within a span of eight hours, two people died on train tracks in Massachusetts in separate incidents.

In the first incident, a man stepped in front of an outbound Red Line subway train at Dorchester’s Savin Hill Station around 11:30 p.m. Thursday.

At 7 a.m. Friday, an elderly man was struck down by a Commuter Rail train while walking on tracks in Belmont, a community just northwest of Boston.

The identities of the victims have been withheld. Officials at the Savin Hill scene would not comment.

An 82-year-old Dorchester woman was killed Tuesday morning when she fell riding an escalator upward at the State Street MBTA station, police said. Helen Jackson was leaving the station at about 10 a.m. when she fell and her clothing got caught at the top of the escalator, officials said.

According to officials, people at the station pressed the emergency stop button to halt the escalator. Emergency medical technicians cut her clothing from the escalator track, and she was transported to Massachusetts General Hospital but was pronounced dead of her injuries.

“There may have been a medical condition prior to her fall on the escalator,” MBTA spokesman Joe Pesaturo told The Boston GLobe. He said the cause of death hadn’t been determined.

State Police assigned to the Suffolk County District Attorney’s office are investigating the incident.

A Beverly, Mass. man who’s accused of groping a woman who turned out to be an undercover transit police officer has been ordered to stay away from the MBTA transit lines.

Jeffrey D. Nichols, 51, was released on a bail warning Tuesday after his arraignment in Boston Municipal Court on indecent assault and battery charges. He was arrested Jan. 16 after police said he touched a plainclothes detective in a sexual manner.

Police opened up an undercover investigation after receiving a tip from a passenger about someone fitting Nichols’ description. He was arrested at the State Street Station.

He’ll have to stay away from trains and stations throughout his case.

“If he does not abide by that order, or if he reoffends in any way, Nichols could be held without bail,” authorities said Tuesday.