Here is a bit of advice offered by the mapmakers to prospective time travelers:
This map is a broad representation of some of the trends and technologies currently visible. Improvement works are carried out at weekends and travelers should check to see whether lines are still operable before commencing any journeys. Helpful suggestions concerning new routes and excursions are always welcome.
If you wish to travel outside of Zone 1 you are advised to bring comfy shoes and a camera. Travelers are also advised to bring their own supplies of food and water although weapons are unnecessary if you keep to well-trodden paths. Also note that travel into Zone 5 is not available for people over 75 years of age.
All kidding aside, this effort is a remarkable achievement. The map was conceived and created by Richard Watson at Nowandnext.com with help, he says, from Benjamin Frazer at Snap. It is probably the most comprehensive and useful compilation of trends, mileposts, and predictions that I have yet seen.
If you like it, feel free to share it (with attribution). If you think it can be improved, feel free to tell us here and we'll pass along your suggestions.