ruth tucson 
Member since Sep 11, 2010



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Re: “Serraglio

Dangerous bike/car intersection at SE corner Mountain and Grant.
Comments from a bike rider and car driver using this intersection -

Serraglio is upset over the many transgressions of car drivers north bound on Mountain Avenue at Grant.

And the comments reveal that bikers and car drivers are upset about lots of intersections and blame each other. Bikers spend a great deal of energy to keep cars off the painted areas that "belong" to them.
Instead of all these verbal complaints and turf fights, both sides could better use all this wasted energy to insist that intersections like the SE corner of Grant and Mountain be RE-DESIGNED to make travel SAFER for all users.

My comments are based on 30 years of experience in urban transportation. I served on several city, state and federal citizens advisory committees. Senator Sandra O'Connor appointed me to serve on the statewide advisory committee on bike routes. Our study quickly revealed that a top cause of bike/car accidents was cars turning in front of bikes going straight ahead.

If right turns are allowed at intersections like this, at some point a car driver turning right must cross the path (PAINTED or not) of a biker going straight ahead. The most common is to allow the car driver to move full right before reaching the intersection. Drivers can see bikers when they approach the intersection. Cars and bikes line up single file so bikers cannot come up later on the blind right side of cars while they are waiting at a light. And cars can make right turns on a red light, which moves traffic better.

This is not ideal but it is safer than the design of this SE corner that forces cars go into the intersection before they can make a right turn - so bikers can come up on their blind side. It violates the ARS that forbids right turns from inner lanes. This is by far the most dangerous design for a bike/car intersection.

So how to stop these many violations at this intersection.
+ Hire a policeman to be there 24/7 to hand out tickets to the law beakers
+ Station armed biker volunteers to confront these drivers and shake them up.

+ Insist that this INTERSECTION be RE-DESIGNED to make it SAFER for bikers and car drivers.

Put a right-turn-only lane to the right of the bike lane so right turns are not made in front of forward moving bikers. Note the ones on the NW corner on Speedway at Mountain and at Park.

After lots of bull, the reason for not implementing this safest solution became clear - the goal is to make it inconvenient for cars to use Mountain so cars (especially those leaving the U of AZ during rush hours) will drive elsewhere. Where? Mountain is listed as primarily a bike route but wishing does not make it so - take a look at those cars exiting the U AZ at 4-6PM.

Posted by ruth tucson on 09/11/2010 at 8:34 AM

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