Details of the 3 intersections on the eastern part of the Libramiento

1.- Libramiento/Prolongacion Cinco de Mayo

 This intersection has been a spot of some concern to the State (Unidad General de
Servicios Tecnicos) as well as to OCSMA. The problem is the many curves on both
Libramiento and the Prolongacion Cinco de Mayo with small radius and the
inclination of Libramiento being rather steep inviting to high speed. This provides a
serious traffic safety risk – I agree to this concern by the state. The state has asked the
SMA administration not to have this intersection developed, but so far the intersection
is still there and I have even seen vehicles coming from Cinco de Mayo turning left
towards Queretaro in spite of the fact that the traffic lights – which have already been
installed – do not work.
A plan for the intersection is attached.
Basically the geometry is correct, even if it will be very difficult for trucks coming from
Pipila to turn left. Once on the ramp the truck will immediately meet an extremely
sharp curve to the right which for large trucks will be impossible to pass. I will suggest
trucks to be prohibited leaving Libramiento at this T-intersection.
The widening and subsequent reduction of width at Libramiento – being necessary to
provide the left turning lane towards Cinco de Mayo – should appear with a proper
construction of these islands to ensure a speed reduction of all vehicles. In addition, a
signal approximately 100 m before the first traffic signal in both directions should
indicate the necessity to lower the speed. If these constructions will not be
established, we may expect several accidents.

There are no directional signing at this intersection and that is OK since we are talking
of some very local streets.

Conclusion: It is difficult to support implementation of this intersection, but with very
careful and strong adherence to design rules and traffic lights, it may be possible to
develop the intersection.