He is on the bus stop vs He is at the bus stop

Some examples from the web:

• He is on the bus stop
• He is on the surface monitoring the plasma infusion.
• He is on the way down.
• He is on the board of trustees, baby.
• We're pretty sure that He is on the way somewhere.
• He is on the international Interpol wanted list.
• He is on the point of leaving for Canada.
• He is on the Professional Register of Geologists of Piedmont.
• He is on the cross as an innocent.
• He is on the bridge, but go fast.
• He is on the Central Committee... And this is his private number.
• He is on the job that he was hired to do.
• He is on the board of Plum Productions and serves as its casting director.
• He is on the advisory boards of scholarly journals such as The Drama Review, Performance Research, New Theatre Quarterly, Teatro e Storia and Teatrología.
• He is on the Board of Directors at Bharti Airtel Ltd., Akzo Nobel NV, and The World Economic Forum.
• He is on the 9:10 to phnom penh, which is leaving in 18 minutes.
• He is on the board of a theatre group that involves street people.
• He is on the ATM video, he did struggle for the gun, and yes, that must be his DNA.
• He is on the run and is considered, armed, unstable, and extremely dangerous.
• He is on the roofs and in the doorways.
• He is on the train back to London when he reads of a secret wedding between the Grand Duchess Anastasia of Catonia and Lord Roland Gaigh.

Some examples from the web:

• He is at the bus stop
• He is at the bar instead of going home.
• He is at the beach when Jack, Hurley and Richard arrive.
• He is at the front, leading our armies.
• He is at the mercy of every invading and destructive agent.
• He is at the mercy of his captors.
• Conductor Goose - He is at the train station.
• Yes? - He is at the police station.
• He is at the moment, a very functional one.
• He is at the helm of securing a bright future for ZW3D by setting an effective distributing strategy.
• He is at the Hamsa, on the head.
• He is at the beginning and end of all your questions.
• He is at the residence of his sister, Mrs. Niles Searles.
• He is at the moment a Franciscan postulant in Samobor, close to Zagreb, Croatia.
• 1967 He is at the Biennale of Sao Paulo with Half Dollar: the famous half-dollar, zoomed in detail.
• He is at the riding school of Cappel... Registration and payment will be handled by Mr. Weippert.
• He is at the origin of the higher education reform, known as LMD, to bring all European degrees into line.
• He is at the furthermost degree of darkness and the beginning of the light.
• He is at the 2006-2007 level and consolidated in the hands of a few
• André Maritan's company has been in existence for almost twenty years. He is at the service of the most preeminent companies from all over the world to create products capable of fitting any style.
• He is at the moment a diamond in the rough though - and I do mean rough.