Good points and bad points about the Ho-Ho bus Delhi. First of all, I see that many people think they were scammed in the price. There are two prices; one for India nationals and one for foreigners. Foreigners pay twice the advertised price. This is on their website hohodelhi.com Hey, it's the same at the Taj Mahal. As of November 2012 the price for the combo red/green route was 1000INR/pp (foreigner) about $USD20. I've been on the HoHo bus in Dublin, London, Seoul and they were much better. They either had a running commentary by the guides, or audio headsets in several languages. Here the guides spoke very little and, seriously, you couldn't understand them. No audio headsets. They advertise an LCD screen which was there but just said " no signal". In fact, on their questionnaire, they ask if you are "satisfied with their audio-visual service" .Maybe they're planning to have it, but there is nothing now. Most of the major sights are on the red line. It is a convenient way to see the sights and also get your bearings. Despite the horrible Delhi traffic, the buses were on time. If you do the combo red/green route you need to change buses. They would call ahead to the other bus and escort you to it . The combination tour takes 4 hours if you don't get off at any sights, but they allow you two days on the same pass. The buses are clean, A/C Not very crowded. The Laipat Nagar market stop was sort of interesting, but don't expect to find any souvenier shops or typical tourist stuff. Reebok outlets (questionable if legit) had stuff I've never seen and not at any discount. Important to note that the red buses come by every half hour and the green only every hour (that's in fine print) HoHo buses don't run on Mondays.
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