Traffic Light Report No.55 [ PDF-DOWNLOAD ] - RTB GmbH & Co. KG


Traffic Light Report No.55 [ PDF-DOWNLOAD ] - RTB GmbH & Co. KG

No | 55

Fall 2010 Volume 21



Light Report

Mannheim: Vehicle Classification

Dialogue-Display: A Role Model with Character

net.1: Retrofitting in Gelsenkirchen



3 Innovative Safety

Dialogue-Display in the

Community of Hörden

4 /5 Successful Application

Traffic Safety in


6/7 Informative Journey

into the Past

German Street and

Traffic Convention 2010

8 / 9 Early Technology

August Horch Museum

in Zwickau

10 /11 Umfangreiche


net.1 in


12 This & That


Dear Readers,

One must admit that in our field we deal with rather dry

material which has a complexity that is rarely recognized

by those outside the field. Everyone is familiar with

traffic lights, commonly known as stoplights, but that’s

about it.

So when one of the leading business magazines in Germany

such as impulse – The Businessman`s Magazine

gets excited about a development in our field, this must

be considered a giant step forward !

The German Chamber of Industry and Trade (DIHK)

and the magazine impulse, in the framework of the

competition “Potential Innovation“, present awards to

companies, which stand out with convincing innovation

in the market place!

We express our heartfelt congratulations for receiving

this award to the company DTV-Verkehrsconsult GmbH,

and in particular to Dr. Hartmut Ziegler and Dr. Thorsten

Kathmann, who, along with their team are promoting

nation-wide traffic monitoring in Germany (cf. the

October issue of the magazine impulse).

In order to put such ideas into practice one needs

courageous persons and customers who are prepared to

keep working on an idea and carry out such a project as

nation-wide traffic monitoring. Special mention must be

made here of the State of Baden-Württemberg which

can be rightly proud of its presentation of this idea at the

German Traffic Convention in Mannheim.

We are also proud to contribute to this development

with our classification devices.

Once more our heartfelt congratulations to all involved!

Rudolf Broer

Executive Director


RTB GmbH & Co.KG, Geschäftsführer Rudolf Broer, Schulze-Delitzsch-Weg 10, 33175 Bad Lippspringe,

Tel. + 49 (0)5252-97 06-0,Fax +49(0)5252-97 06-10 E-Mail:,


HACKPR- und Werbeagentur GmbH, 33175 Bad Lippspringe


Machradt, Graphischer Betrieb, 33175 Bad Lippspringe

Along with the life-sized figures of children the Dialogue-Display

is now contributing to the reduction of speeding.

Innovative Safety

Pilot project with the Dialogue-Display in the community of Hörden

In order to increase safety at a frequently used

pedestrian crosswalk, the community of Hörden

initiated a pilot project using the Dialogue-


In Hörden pedestrians must use a crosswalk

to reach a grade school, a general purpose

building, athletic fields and other leisure time

areas. School children are especially affected by

this quite difficult situation in street traffic.

Several years ago the community set up life-

sized figures of children at this traffic junction,

in order to warn car drivers and increase their

attentiveness. However, last year a child was

slightly injured at this intersection. The

community`s request to have a traffic light installed

was rejected by the county authorities.

Therefore, the community took the initiative.

For each direction of travel a Dialogue-Display

has been installed, mainly to achieve observance

of the speed limit of 30 km/h. When the facility

went into operation one could immediately

observe its effectiveness. A car driver who

happened to pass by was promptly scolded

with a red “Slow down”.

After the first weeks of operation, the unanimous

opinion of all those involved: The Dialogue-

Display makes an important contribution to

the safety of the weakest participants in


2 | 3

Traffic Light Report No. 55

The variable motif design makes multiple uses possible: Safety at a kindergarten and safety at an agency for senior citizens.

An interview with the Mayor of Niestetal Andreas Siebert

Niestetal is one of several communities which has decided to use Dialogue-Displays to

make sensitive locations (e.g. in front of kindergartens and schools) safer. Certainly the

recommendations of the German Insurance Federation (GDV) support this decision.

Mayor Andreas Siebert explained his position to us in the following Interview.

Mr. Siebert, what exactly was the reason for your intensive consideration of the topic of speed displays?

We pay very special attention to traffic areas near kindergartens and schools. Of course, our Office for Public Order

conducts sporadic speed checks in these streets and we ticket and fine some speeders for exceeding the limit. However,

I think that the permanent installation of a Dialogue-Display has a significantly greater and longer lasting effect. One

can influence the car driver in a positive manner with the words “Slow down” and “Thanks” which are displayed

dependent on the speed of the passing vehicle.

How did you learn about RTB and in particular about the Dialogue-Display?

Once the decision to install Dialogue-Displays had been made, we searched the market place for manufacturers of

such devices. The price and the flexibility for the optical design of the display were the decisive aspects for giving the

contract to RTB. In the meantime there are more cities and communities which have chosen RTB.

Why did you expressly choose the Dialogue-Display?

Speed measurement facilities which covertly photograph drivers when the speed limit is exceeded and result in a

warning ticket or a fine are frequently a lesson for car drivers. Experience shows, however, that this effect doesn’t last

very long. This is different with the Dialogue-Displays, which are in operation 24 hours a day and react directly to the

driving behavior of traffic participants. Studies by accident researchers have shown that the words ”Slow down” and

Successful Application

Dialogue-Displays for more safety

The community of Niestetal places special

value on safety in street traffic in the vicinity of

schools and kindergartens. The recently installed

Dialogue-Displays should insure that

car drivers adjust their speed according to

the situation – especially at locations where extreme

caution is necessary.

What is special about the display signs is

that the car driver is not only warned when

exceeding the speed limit but also praised for

observing the speed limit. With both phrases

“Slow down” and “Thanks”, displayed in red and

green respectively, the Display reacts directly

to the driving behavior of the driver. Mayor

Andreas Siebert states, “that accident re-

searchers recommend this kind of display,

because at some point in time simple traffic

signs are disregarded. It has been proven that

this loss of effectiveness with the passage of

time is also true for signs that display only the

current speed of the passing vehicle.”

A total of seven Displays, some of which are

powered by solar energy, are now installed at

selected locations in Niestetal. Siebert: “We

hope that traffic safety, especially for children,

will be significantly increased by the Dialogue-

Displays. The reaction of the public to the sign

displays is, in any event, unanimously positive.”

(Press release of the community of Niestetal, Text Bachmann)

“Thanks” make a strong emotional impression on drivers. Due to the fact that the effectiveness does not diminish with

the passage of time, the results with the Displays last significantly longer.

Who was involved in the decision process in your community?

One the one hand, of course, our street traffic authority, which determined potential locations and obtained various

pro forma invoices. On the other hand the community board of trustees, which made the final decision.

What criteria were used to select the locations?

In the two sections of our town we have four communal kindergartens, two grade schools and one 1 - 13 school –

institutions where, as a rule, many children are present. Since car drivers should drive past these areas very cautiously

we found it important to install the devices at these locations first.

In Niestetal you are using a special motif for the first time. It combines safety at a kindergarten with safety at an agency

for senior citizens across the way from the kindergarten. Can you report on the experience with this idea thus far?

As I mentioned before, the flexibility of design of the Displays was one of the selection criteria in favor of RTB, It was

important for us that the Displays could be designed based on their location. For this reason the Display at this

location has our Niestetal logo and a picture of a child with an older man. On the Display near the kindergarten a

picture of young children is used. In the vicinity of schools older children are pictured.

How do you rate the system at the present time?

We hope that the Displays will significantly increase traffic safety, especially for children. The reactions to the

Display up until now are, in any event, completely positive.

Mr. Siebert, we sincerely thank you for this interview.

4 | 5

Traffic Light Report No. 55

Informative Journey into the Past

“The Street as a Contemporary Witness of History”

at the German Traffic Convention 2010

The German Street and Traffic Convention 2010

took place in the Congress Center Rosengarten

in Mannheim from the 15th to the 17th of September

2010. It was accompanied by the satellite

exhibition Street and Traffic 2010. RTB was on

location with a fair booth.

The convention was organized by the Research

Society for Street and Traffic Matters (FGSV),

a non - profit technical - scientific association.

Founded in 1924, it mainly supports continuing

development of technical knowledge in the

entire field of streets and traffic. In a cooperative

manner, administrations, businesses and scientific

agencies work together and send a total of

2100 employees and members to participate in

numerous expert commissions and committees.

In the various presentation series, experts deal

with current questions about the design of

traffic space, street planning and traffic management.

They also discuss the longevity of street


The satellite exhibition Streets and Traffic 2010,

with its more than 100 exhibitors, attracted a

great deal of interest as a meeting point for experts

in the field. In this regard RTB’s exceptional

fair booth puzzled many visitors. Certainly, many

asked themselves, what do a sun umbrella and

a folding chair have to do with a traffic convention.

A closer look answered the question.

RTB used two antique toy pedal cars, a Mercedes-Benz

300 SL and a BMW 328 H, to emphasize

the slogan of the exhibition “The Street as a

Contemporary Witness of History”. Here the

development of the street traffic census was

of particular importance. Where students have

often sat in their folding chairs along the side

Dipl.-Ing. Martin Pozybill (Ministry for Environment, Ecological Protection and Traffic Baden-Württemberg) tests the traditional

counting method at the RTB booth.

of the street and tried to coordinate a collection

of singles pieces of paper with census information,

modern counting devices mounted in guide

posts will take over the task in the future. Of

By the way. . .

The full-scale originals of the two miniature

old timers which were displayed at

the RTB fair booth could recently be admired

during the 3rd Hamburg-Berlin’-

Classic Old Timer Rally.

course, the visitors could get an impression of

the radar technology involved but could also

have a look at the time-tested RTB products

Push Buttons and Acoustical Signal Transmitters.

183 classic cars built between 1907 and

1990 traveled from Hamburg to Berlin.

After about 600 km through attractive

German countryside the participants

reached their goal on July 31. One could

read the emotions in the facial expressions

– the range went from pride to minor

fatigue. Newcomers, old pros and

prominent personalities such as Jochen

Maaß (former race driver) or Detlef Buck

(actor and director’) took on the physical

challenge and tribulations.

Once again it was an exceptional event

with lots of fun and a good atmosphere.

All those involved were in agreement on


6 | 7

Traffic Light Report No. 55

Early Technology

Authentic Exhibition in the

August Horch Museum in Zwickau

The connection between history and the present

is shorter than many people think. Especially in

the signal manufacturing industry one has a

direct connection to the automobile, because

without the automobile traffic light facilities

would very likely not exist. Therefore, we want to

present a museum for technology here which documents

the development of technical progress.

Since September 2004 the August Horch

Museum has been offering its visitors an authentic

experiential exhibition on the subject of

automotive history. The exhibition is housed in

the restored buildings of the former Audi factory

in Zwickau and is called “Relive Automotive

History”. The reopening of the former office

building and the Villa Horch in September 2005

expanded the two-story exhibition area to

almost 3,000 m2 .

Many ideas started here and then had an influence

on the entire German car manufacturing

field: the pioneer spirit and the wealth of inventiveness

of this over 100 year old tradition

invite the visitors to discover the past now.

Some real gems of the art of Saxon automotive

construction, such as the Horch Phaeton from

1911 and the compact car DKW F1 with the first

production model front wheel drive or the

elegant Horch Luxury-Models, testify to the

highly sophisticated technology of times past.

At the Intertraffic 2010 in Amsterdam another

contemporary witness of automotive construction

history drew the attention of many visitors:

the DKW F8 at the RTB fair booth had a large

number of admirers. After all, the engineering

skills from the beginning of the automobile and

in the current RTB products for street traffic

technology form an attractive contrast.

There is further information about the exhibition

in Zwickau at

8 | 9

Traffic Light Report No. 55

Comprehensive Expansion

Retrofitting traffic light facilities with net.1 in Gelsenkirchen

Retrofitting a large intersection in Gelsenkirchen

presented the authorities and the signal

manufacturing industry with a considerable

new challenge. In meeting this challenge net.1

demonstrated its complete range of operative


Pedestrian crosswalk at the intersection Florastraße / Overwegstraße in Gelsenkirchen

In net.1 an intelligent field bus makes the integration

of additional devices possible without

necessitating an increase in the number of

cables used. In Gelsenkirchen in particular this

aspect was of enormous importance. The

existing signal transmitter star cabling pattern

would have, in the normal case, necessitated 52

additional grounding cables for the retrofitting

with signal transmitters for blind pedestrians.

By using net.1 only 6 cables which could be

installed simply in the existing duct system,

were needed.

Especially for this relatively complex junction,

net.1 was expanded to make connecting a total

of 32 signal transmitters with 230V for blind

pedestrians possible. This expansion was important

since 26 devices needed to be installed at

the large intersection. This would not have been

possible with the previous version of net.1.

Independent of this concrete

project, net.1 offers,

in addition to the reduction

of the size of the cable

net, saving potential in

the logic of the switching

device. For example, the

activation of the LED confirmation

screen “Signal

activated” is possible internally

in net.1. In contrast

to the strictly internal

push button confirmation

logic, the signals

are activated centrally,

to be exact in the net.1

central module which is

installed in the switching


Thanks to these new

possibilities an effective

utilization of the existing

grounding cable net is

feasible and thus allows a

simple and inexpensive

retrofitting of existing

traffic light facilities.

Simple Installation of net.1 central

modules in the control device

10 | 11

Traffic Light Report No. 55

This & That

Vacation discovery

In the vacation region Zillertal in Austria an RTB employee

was more than surprised when she came upon a

push button that was very familiar to her at the stations

of the Narrow-Gauge Railway. Of course, she tested

one right away and received the reliable announcement

from the loudspeaker about when the next train to

Mayrhofen or Jenbach would be departing. There were

also push buttons to signal to the train engineer to stop

at stations where the trains only stop on demand. This is

simply another great example for the many different

application possibilities for RTB products.

Parking lots for trucks

Goods valued at approximately 8 billion Euro are stolen

from trucks annually. The General German Automobile

Club (ADAC) tested the security at truck parking lots in

eleven countries. Only nine parking lots met the high

security standards. The European Union (EU) has

recognized this problem and is supporting the project

“Label” which is intended to help to certify parking lots

in the future so that truck drivers can have a direct

approach to guarded parking lots. Further information

can be found at / lkw-parkplaetze and

Endangered Traffic

A single sex act and then death – that is the fate of

millions of day flies. This applies not only to the day flies

but also to several Bavarian motorists. Along the Naab

River in the Upper Palatinate County Schwandorf

the insect plague turns the streets into dangerous

slides. The reason is that the day flies hatch and mate

at about 10 pm when the illumination is appropriate.

After mating the males die and fall to the ground

where a dangerous slippery film is created. In order

to counteract this, halogen spotlights are being

installed directly under bridges to attract the insects.

Then the flies would fall directly into the water after