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3.0 Signing, Markings and Channelization

3.4.2 Survey Results

Dedicated Lane Speed Limit (mph)
Toll Roads
Max
Min
Mode
Average
70
5
24
33.0
Location of speed limit sign relative to the
centerline of the ETC antenna
((+)X' ahead or (-)X' behind)?
+24.6
-2640
+15
+20
+2
+2400
+150
0
+1320

 

 

Toll Bridges
Max
Min
Mode
Average
31
5
5
14.2
Location of speed limit sign relative to the centerline of the ETC antenna
((+)X' ahead or (-)X' behind)?
+12
Ahead
On the canopy
+7
0

 

Dedicated Lane Speed
Toll Roads
Is speed measured through the dedicated ETC lane(s)?
No.
%
Yes
10
67%
No
5
33%
Total
15
If yes, what device is used to measure speed?
No.
%
Loop detector
6
60%
Light curtain
1
10%
Overhead laser sensor
1
10%
Radar device
1
10%
Other
1
10%
Treadle
Total
10
Toll Roads
Is speed measured through the dedicated ETC lane(s)?
No.
%
Yes
2
40%
No
3
60%
Total
5
If yes, what device is used to measure speed?
No.
%
Loop detector
0
0%
Light curtain
1
50%
Overhead laser sensor
0
0%
Radar device
0
0%
Other
1
50%
loop detector and overhead laser sensor
Total
2

 

Speed Display Sign
Toll Roads
Does the dedicated ETC lane include a travel speed display sign?
No.
%
Yes
2
13%
No
14
88%
Total
16
If yes, what distance in front of the ETC antenna is the speed display sign (in feet)?
20 feet, only mixed use lanes
If yes, what technology is used for the speed display sign?
No.
%
Flourescent flip disk
0
LED
2
Fiberoptic flip disk
0
Other
0
Toll Roads
Does the dedicated ETC lane include a travel speed display sign?
No.
%
Yes
0
0%
No
7
100%
Total
7
If yes, what distance in front of the ETC antenna is the speed display sign (in feet)?
 
If yes, what technology is used for the speed display sign?
No.
%
Flourescent flip disk
0
LED
0
Fiberoptic flip disk
0
Other
0

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